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Longer titles found: Anti-diagonal matrix (view), Tridiagonal matrix (view)

searching for Diagonal matrix 178 found (350 total)

alternate case: diagonal matrix

M-matrix (1,174 words) [view diff] exact match in snippet view article find links to article

positive diagonal matrix D such that AD has all positive row sums. A has all positive diagonal elements, and there exists a positive diagonal matrix D such
Slater–Condon rules (1,278 words) [view diff] exact match in snippet view article find links to article
interaction theories. In 1929 John C. Slater derived expressions for diagonal matrix elements of an approximate Hamiltonian while investigating atomic spectra
Crout matrix decomposition (363 words) [view diff] exact match in snippet view article find links to article
is such that: A = LDU being L a unit lower triangular matrix, D a diagonal matrix and U a unit upper triangular matrix, then Doolittle's method produces
Eigenvalues and eigenvectors (13,619 words) [view diff] exact match in snippet view article find links to article
{\displaystyle D:=V^{T}AV} , we get a matrix whose top left block is the diagonal matrix λ I γ A ( λ ) {\displaystyle \lambda I_{\gamma _{A}(\lambda )}} . This
Jordan matrix (2,805 words) [view diff] exact match in snippet view article find links to article
matrix theory, a Jordan matrix, named after Camille Jordan, is a block diagonal matrix over a ring R (whose identities are the zero 0 and one 1), where each
Nullity (graph theory) (318 words) [view diff] exact match in snippet view article
Laplacian matrix of the graph, defined as L = D − A, where D is the diagonal matrix of vertex degrees; the Laplacian nullity equals the cycle rank because
Square root of a 2 by 2 matrix (1,360 words) [view diff] no match in snippet view article find links to article
A square root of a 2×2 matrix M is another 2×2 matrix R such that M = R2, where R2 stands for the matrix product of R with itself. In general, there can
Bauer–Fike theorem (1,640 words) [view diff] exact match in snippet view article find links to article
non-singular eigenvector matrix such that A = VΛV −1, where Λ is a diagonal matrix. If X ∈ Cn,n is invertible, its condition number in p-norm is denoted
Drazin inverse (856 words) [view diff] exact match in snippet view article find links to article
A D = A − 1 {\displaystyle A^{\text{D}}=A^{-1}} . If A is a block diagonal matrix A = [ B 0 0 N ] {\displaystyle A={\begin{bmatrix}B&0\\0&N\end{bmatrix}}}
Reducing subspace (421 words) [view diff] exact match in snippet view article find links to article
{\displaystyle Q^{-1}MQ} representing T {\displaystyle T} is a block-diagonal matrix Q − 1 M Q = [ A 0 0 B ] {\displaystyle Q^{-1}MQ=\left[{\begin{arra
Rayleigh dissipation function (665 words) [view diff] exact match in snippet view article find links to article
{\displaystyle {\vec {F}}_{f}=-k{\vec {v}}} , where k {\displaystyle k} is a diagonal matrix, then the Rayleigh dissipation function can be defined for a system
Bregman–Minc inequality (917 words) [view diff] exact match in snippet view article find links to article
is a block diagonal matrix consisting of matrices of ones or results from row and/or column permutations of such a block diagonal matrix. Since the permanent
Iterative proportional fitting (3,463 words) [view diff] exact match in snippet view article find links to article
as a zero in X {\displaystyle X} . Thus, a bloc-diagonal matrix is projected as a bloc-diagonal matrix and a triangular matrix is projected as a triangular
Chromatic adaptation (1,061 words) [view diff] exact match in snippet view article find links to article
2}/L_{1}&0&0\\0&M_{2}/M_{1}&0\\0&0&S_{2}/S_{1}\end{bmatrix}}} This diagonal matrix D maps cone responses, or colors, in one adaptation state to corresponding
Schur–Horn theorem (2,908 words) [view diff] exact match in snippet view article find links to article
{\displaystyle {\tilde {\lambda }}.} Let Λ {\displaystyle \Lambda } be the diagonal matrix having λ 1 , λ 2 , … , λ n {\displaystyle \lambda _{1},\lambda _{2}
Estimation of signal parameters via rotational invariance techniques (2,849 words) [view diff] exact match in snippet view article find links to article
T}} are unitary matrices and Σ {\textstyle \mathbf {\Sigma } } is a diagonal matrix of size M × T {\textstyle M\times T} , that holds the singular values
Compact finite difference (1,180 words) [view diff] exact match in snippet view article find links to article
disadvantage is that compact schemes are implicit and require to solve a diagonal matrix system for the evaluation of interpolations or derivatives at all grid
Polar decomposition (4,272 words) [view diff] exact match in snippet view article find links to article
equivalent to a diagonal matrix: A = V Λ V ∗ {\displaystyle A=V\Lambda V^{*}} for some unitary matrix V {\displaystyle V} and some diagonal matrix Λ   . {\displaystyle
Corner transfer matrix (2,357 words) [view diff] exact match in snippet view article find links to article
ordering the configurations appropriately we may cast A as a block diagonal matrix: σ 1 ′ = + 1 σ 1 ′ = − 1 A = [ | A + | 0 | − − − | − − − | 0 | A −
Fractional Brownian motion (2,202 words) [view diff] exact match in snippet view article find links to article
{\displaystyle i=1,\dots ,n} ). Let Λ {\displaystyle \,\Lambda } be the diagonal matrix of the eigenvalues, i.e. Λ i j = λ i δ i j {\displaystyle \Lambda _{ij}=\lambda
Limited-memory BFGS (2,378 words) [view diff] exact match in snippet view article find links to article
approximate inverse Hessian H k 0 {\displaystyle H_{k}^{0}} is chosen as a diagonal matrix or even a multiple of the identity matrix since this is numerically
Matrix element (physics) (948 words) [view diff] exact match in snippet view article
\mathbb {N} \}} basis set. This allows us to put the Hamiltonian in a diagonal matrix form where the diagonal elements are the only non-zero matrix elements
Diffusion map (2,469 words) [view diff] exact match in snippet view article find links to article
{\displaystyle L^{(\alpha )}=D^{-\alpha }LD^{-\alpha }\,} where D is a diagonal matrix and D i , i = ∑ j L i , j . {\displaystyle D_{i,i}=\sum _{j}L_{i,j}
Frobenius group (1,272 words) [view diff] exact match in snippet view article find links to article
The Frobenius complement H is the cyclic subgroup generated by the diagonal matrix whose i,i'th entry is zi. The Frobenius kernel K is the Sylow q-subgroup
Quantum statistical mechanics (1,323 words) [view diff] exact match in snippet view article find links to article
possible that H(S) = +∞ for some density operator S. In fact T be the diagonal matrix T = [ 1 2 ( log 2 ⁡ 2 ) 2 0 ⋯ 0 ⋯ 0 1 3 ( log 2 ⁡ 3 ) 2 ⋯ 0 ⋯ ⋮ ⋮ ⋱
Trust region (759 words) [view diff] exact match in snippet view article find links to article
where diag ⁡ ( A ) {\displaystyle \operatorname {diag} (A)} is the diagonal matrix with the same diagonal as A, and λ is a parameter that controls the
Signature (topology) (795 words) [view diff] exact match in snippet view article
( M ) = n + − n − {\displaystyle \sigma (M)=n_{+}-n_{-}} where any diagonal matrix defining Q has n + {\displaystyle n_{+}} positive entries and n − {\displaystyle
Principal curvature (1,290 words) [view diff] exact match in snippet view article find links to article
the matrix [ I I i j ] {\displaystyle \left[I\!I_{ij}\right]} is a diagonal matrix, then they are called the principal directions. If the surface is oriented
Matrix addition (1,208 words) [view diff] exact match in snippet view article find links to article
matrix. In particular, the direct sum of square matrices is a block diagonal matrix. The adjacency matrix of the union of disjoint graphs (or multigraphs)
Artin's theorem on induced characters (1,581 words) [view diff] exact match in snippet view article find links to article
{\displaystyle \rho (r_{i})W} . In this basis for V {\displaystyle V} , the diagonal matrix entry of ρ ( g ) {\displaystyle \rho (g)} vanishes for each basis vector
Carrier interferometry (1,628 words) [view diff] exact match in snippet view article find links to article
= F−1ΛHF is from the definition of a circulant matrix, and ΛH is a diagonal matrix whose diagonal elements correspond to the first column of the circulant
Frequency domain decomposition (308 words) [view diff] exact match in snippet view article find links to article
vectors u i j {\displaystyle u_{ij}} , S i {\displaystyle S_{i}} is the diagonal matrix holding the singular values s i j {\displaystyle s_{ij}} . For an n
Heat kernel signature (2,362 words) [view diff] exact match in snippet view article find links to article
{\displaystyle L=A^{-1}W} where A {\displaystyle A} is a positive diagonal matrix with entries A ( i , i ) {\displaystyle A(i,i)} corresponding to the
Stress (mechanics) (5,562 words) [view diff] exact match in snippet view article
2 , e 3 {\displaystyle e_{1},e_{2},e_{3}} , the stress tensor is a diagonal matrix, and has only the three normal components λ 1 , λ 2 , λ 3 {\displaystyle
Proto-value function (1,082 words) [view diff] exact match in snippet view article find links to article
operator L = D − A {\displaystyle L=D-A} , where D {\displaystyle D} is a diagonal matrix called the degree matrix and A {\displaystyle A} is the adjacency matrix
(B, N) pair (992 words) [view diff] exact match in snippet view article
represented by the matrices obtained by swapping two adjacent rows of a diagonal matrix. The Weyl group is the symmetric group on n letters. More generally
Durand–Kerner method (3,080 words) [view diff] exact match in snippet view article find links to article
TAT^{-1}} of A is as well a companion matrix of ƒ(X). Choosing T as diagonal matrix leaves the structure of A invariant. The root close to z k {\displaystyle
RV coefficient (816 words) [view diff] exact match in snippet view article find links to article
\Lambda _{X}} (resp. Λ Y {\displaystyle \Lambda _{Y}} ) denotes the diagonal matrix of the eigenvalues of Σ X X {\displaystyle \Sigma _{XX}} (resp. Σ Y
Confidence region (1,284 words) [view diff] exact match in snippet view article find links to article
proportional to the reciprocals of the values on the diagonals of the diagonal matrix, and the directions of these axes are given by the rows of the 3rd
Perron–Frobenius theorem (8,215 words) [view diff] exact match in snippet view article find links to article
invertible then neither is PAP−1 or A. Conversely let D be the block-diagonal matrix corresponding to PAP−1, in other words PAP−1 with the asterisks zeroised
Schrieffer–Wolff transformation (2,124 words) [view diff] exact match in snippet view article find links to article
its diagonal, to transform H 0 {\displaystyle H_{0}} into a purely diagonal matrix D 0 = diag ⁡ ( d i ) {\displaystyle D_{0}=\operatorname {diag} (d_{i})}
Generalized chi-squared distribution (2,076 words) [view diff] exact match in snippet view article find links to article
{T} }z=(x+b)^{\mathrm {T} }D(x+b)+d^{\mathrm {T} }x+e,} where D is a diagonal matrix and where x represents a vector of uncorrelated standard normal random
Special linear group (1,781 words) [view diff] exact match in snippet view article find links to article
sequence splits by taking any matrix with determinant −1, for example the diagonal matrix ( − 1 , 1 , … , 1 ) . {\displaystyle (-1,1,\dots ,1).} If n = 2 k +
Born–Oppenheimer approximation (5,077 words) [view diff] exact match in snippet view article find links to article
{\displaystyle \chi _{k}} can be chosen to be always real. The off-diagonal matrix elements satisfy ⟨ χ k ′ | P A α | χ k ⟩ ( r ) = ⟨ χ k ′ | [ P A α
Eigenstate thermalization hypothesis (5,544 words) [view diff] exact match in snippet view article find links to article
off-diagonal matrix elements A α β {\displaystyle A_{\alpha \beta }} , with α ≠ β {\displaystyle \alpha \neq \beta } , are much smaller than the diagonal
Semisimple Lie algebra (5,743 words) [view diff] exact match in snippet view article find links to article
a 1 , … , a n ) {\displaystyle d(a_{1},\ldots ,a_{n})} denotes the diagonal matrix with a 1 , … , a n {\displaystyle a_{1},\ldots ,a_{n}} on the diagonal
Eigenvector centrality (1,340 words) [view diff] exact match in snippet view article find links to article
d i a g ( x ) {\displaystyle \mathbf {diag} (\mathbf {x} )} is the diagonal matrix of vector x {\displaystyle \mathbf {x} } . N {\displaystyle \mathbf
Eckart conditions (3,346 words) [view diff] exact match in snippet view article find links to article
_{1}^{0},\ldots ,\mathbf {R} _{N}^{0}} . The diagonal matrix M contains the masses on the diagonal. The diagonal matrix Φ {\displaystyle {\boldsymbol {\Phi }}}
Schmidt decomposition (1,331 words) [view diff] exact match in snippet view article find links to article
{\displaystyle \rho } , with respect to either system A or B, is a diagonal matrix whose non-zero diagonal elements are | α i | 2 {\displaystyle |\alpha
Maximal torus (1,734 words) [view diff] exact match in snippet view article find links to article
\mathrm {diag} \left(e^{i\theta },e^{-i\theta }\right)} denotes the diagonal matrix with diagonal entries e i θ {\displaystyle e^{i\theta }} and e − i
Multiple correspondence analysis (1,571 words) [view diff] exact match in snippet view article find links to article
unitary matrices and Δ {\displaystyle \Delta } is the generalized diagonal matrix of the singular values (with the same shape as Z {\displaystyle Z}
Transition dipole moment (1,421 words) [view diff] exact match in snippet view article find links to article
other words, the transition dipole moment can be viewed as an off-diagonal matrix element of the position operator, multiplied by the particle's charge
Virtual fixture (2,430 words) [view diff] exact match in snippet view article find links to article
slave robot. If the constant c {\displaystyle c} is replaced by a diagonal matrix C {\displaystyle \mathbf {C} } it is possible to adjust the compliance
Givens rotation (3,246 words) [view diff] exact match in snippet view article find links to article
Another method can extend Givens rotations to complex matrices. A diagonal matrix whose diagonal elements have unit magnitudes but arbitrary phases is
Oscillator strength (1,233 words) [view diff] exact match in snippet view article find links to article
omitted because in confined systems such as atoms or molecules the diagonal matrix element ⟨ n | p x | n ⟩ = 0 {\displaystyle \langle n|p_{x}|n\rangle
Cayley transform (2,249 words) [view diff] exact match in snippet view article find links to article
{\displaystyle Q=E(I-A)(I+A)^{-1}} for some skew-symmetric matrix A and some diagonal matrix E with ±1 as entries. A slightly different form is also seen, requiring
Solvable group (3,033 words) [view diff] exact match in snippet view article find links to article
with d = − b / a {\displaystyle d=-b/a} , we can get a diagonal matrix in B {\displaystyle B} . This shows the quotient group B / U ≅ F ×
Foldy–Wouthuysen transformation (3,101 words) [view diff] exact match in snippet view article find links to article
In the Dirac-Pauli representation where β is a diagonal matrix, 5 is then reduced to a diagonal matrix: By elementary trigonometry, 6 also implies that:
Dirichlet's ellipsoidal problem (2,701 words) [view diff] exact match in snippet view article find links to article
_{j=1}^{3}P_{ij}(t){\frac {x_{j}(0)}{a_{j}(0)}}.} and we define a diagonal matrix A ( t ) {\displaystyle \mathbf {A} (t)} with diagonal elements being
FastICA (1,239 words) [view diff] exact match in snippet view article find links to article
the matrix of eigenvectors and D {\displaystyle \mathbf {D} } is the diagonal matrix of eigenvalues. The whitened data matrix is defined thus by X ← D −
SPIKE algorithm (3,549 words) [view diff] exact match in snippet view article find links to article
blocks Aj (j = 1,...,p with p ≥ 2) are nonsingular. Define a block diagonal matrix D = diag(A1,...,Ap), then D is also nonsingular. Left-multiplying D−1
Zero-forcing precoding (1,528 words) [view diff] exact match in snippet view article find links to article
{\displaystyle \mathbf {Q} } is some K × K {\displaystyle K\times K} diagonal matrix. Typically, Q {\displaystyle \mathbf {Q} } is selected to be an identity
Smoothing spline (2,309 words) [view diff] exact match in snippet view article find links to article
{\displaystyle \Delta _{i,i+2}=1/h_{i+1}} W is an (n-2)×(n-2) symmetric tri-diagonal matrix with elements: W i − 1 , i = W i , i − 1 = h i / 6 {\displaystyle W_{i-1
Stress–energy tensor (4,040 words) [view diff] exact match in snippet view article find links to article
&0\\0&0&0&1\end{matrix}}\right)} and the stress–energy tensor is a diagonal matrix T α β = ( ρ 0 0 0 0 p 0 0 0 0 p 0 0 0 0 p ) . {\displaystyle T^{\alpha
Factor analysis (10,024 words) [view diff] exact match in snippet view article find links to article
will be 1 {\displaystyle 1} s. The second term on the right will be a diagonal matrix with terms less than unity. The first term on the right is the "reduced
Levenberg–Marquardt algorithm (3,211 words) [view diff] exact match in snippet view article find links to article
replacing the identity matrix ⁠ I {\displaystyle \mathbf {I} } ⁠ with the diagonal matrix consisting of the diagonal elements of ⁠ J T J {\displaystyle \mathbf
Segmentation-based object categorization (1,901 words) [view diff] exact match in snippet view article find links to article
\limits _{j}w_{ij}} Also, let D be an n × n {\displaystyle n\times n} diagonal matrix with d {\displaystyle d} on the diagonal, and let W {\displaystyle
Fourier transform on finite groups (2,049 words) [view diff] exact match in snippet view article find links to article
= S {\displaystyle DFT.DFT^{*}=S} , where S {\displaystyle S} is a diagonal matrix consisting of +1's and -1's. We can factor S = R R ∗ {\displaystyle
Partial correlation (3,782 words) [view diff] exact match in snippet view article find links to article
covariance matrix, T {\displaystyle T} is a target matrix (e.g., a diagonal matrix), and the shrinkage intensity λ ∈ ( 0 , 1 ) {\displaystyle \lambda
Gauss–Newton algorithm (4,177 words) [view diff] exact match in snippet view article find links to article
=-\mathbf {J} ^{\operatorname {T} }\mathbf {r} ,} where D is a positive diagonal matrix. Note that when D is the identity matrix I and λ → + ∞ {\displaystyle
Overdetermined system (2,204 words) [view diff] exact match in snippet view article find links to article
matrix A {\displaystyle A} , S {\displaystyle S} is a (small) square diagonal matrix with non-negative singular values along the diagonal, and where V {\displaystyle
Invariant convex cone (3,569 words) [view diff] exact match in snippet view article find links to article
g with a unitary transformation, it can be assumed that g(0) is a diagonal matrix with entries λi ≥ 0 with r = λ1 > 0 and that the image of the unit
Paramodular group (878 words) [view diff] exact match in snippet view article find links to article
{\displaystyle {\begin{pmatrix}0&F\\-F&0\end{pmatrix}}} where F is an n by n diagonal matrix whose diagonal elements Fii are positive integers with each dividing
Neuromorphic computing (4,913 words) [view diff] exact match in snippet view article find links to article
memristor; its physical origin is the charge mobility in the conductor. The diagonal matrix and vector X = diag ⁡ ( X → ) {\displaystyle X=\operatorname {diag}
Rabi frequency (2,291 words) [view diff] exact match in snippet view article find links to article
i ⟩ {\displaystyle |i\rangle } of the Hydrogen atom potential, the diagonal matrix elements go to zero, leaving us with i c ˙ 1 ( t ) = c 2 ( t ) cos
Peter–Weyl theorem (2,480 words) [view diff] exact match in snippet view article find links to article
(\pi (g)).} In the notation above, the character is the sum of the diagonal matrix coefficients: χ π = ∑ i = 1 d ( π ) u i i ( π ) . {\displaystyle \chi
Universal multiport interferometer (4,174 words) [view diff] exact match in snippet view article find links to article
This is accomplished by multiplying the transformed diagonal matrix by another diagonal matrix D {\textstyle D} whose elements are also modulus of unity
Graph partition (2,979 words) [view diff] exact match in snippet view article find links to article
{\displaystyle j} , and degree matrix D {\displaystyle D} , which is a diagonal matrix, where each diagonal entry of a row i {\displaystyle i} , d i i {\displaystyle
Direct sum (2,858 words) [view diff] exact match in snippet view article find links to article
{\displaystyle \mathbf {A} \oplus \mathbf {B} } is defined as the block diagonal matrix of A {\displaystyle \mathbf {A} } and B {\displaystyle \mathbf {B}
Numerical range (2,893 words) [view diff] exact match in snippet view article find links to article
that A = U D U ∗ {\textstyle A=UDU^{*}} , where D {\textstyle D} is a diagonal matrix containing the eigenvalues λ 1 , λ 2 , … , λ n {\textstyle \lambda
Projection pursuit regression (1,832 words) [view diff] exact match in snippet view article find links to article
If we solve for all weights w {\displaystyle w} and put them in a diagonal matrix W {\displaystyle W} , stack all the new targets b ^ {\displaystyle
OPTOS formalism (1,149 words) [view diff] exact match in snippet view article find links to article
redistribution takes occurs on the path, the propagation matrix D is a diagonal matrix. The single entries consist of the Lambert-Beer absorption factor,
Sparse dictionary learning (3,499 words) [view diff] exact match in snippet view article find links to article
{\displaystyle \lambda _{i}} are the so-called dual variables forming the diagonal matrix Λ {\displaystyle \Lambda } . We can then provide an analytical expression
Geometrothermodynamics (1,374 words) [view diff] exact match in snippet view article find links to article
1,\ldots ,1)} where ξ a b {\displaystyle \xi _{ab}} is a constant diagonal matrix that can be expressed in terms of δ a b {\displaystyle \delta _{ab}}
Cyclotomic fast Fourier transform (1,477 words) [view diff] exact match in snippet view article find links to article
{\displaystyle a_{ijs}} , L {\displaystyle \mathbf {L} } is a block diagonal matrix, and Π {\displaystyle \mathbf {\Pi } } is a permutation matrix regrouping
Whitehead torsion (1,906 words) [view diff] exact match in snippet view article find links to article
matrix can be written as a product of elementary matrices times a diagonal matrix; this follows easily from the fact that Z {\displaystyle \mathbb {Z}
Kernel methods for vector output (4,220 words) [view diff] exact match in snippet view article find links to article
{\displaystyle \Sigma \in {\mathcal {\textbf {R}}}^{D\times D}} is a diagonal matrix with elements { σ d 2 } d = 1 D {\displaystyle \left\{\sigma
LMS color space (3,608 words) [view diff] exact match in snippet view article find links to article
methods, or color appearance models (CAMs), run a von Kries-style diagonal matrix transform in a slightly modified, LMS-like, space instead. They may
Walk-regular graph (613 words) [view diff] exact match in snippet view article find links to article
{\displaystyle G} is walk-regular. A k {\displaystyle A^{k}} is a constant-diagonal matrix for all k ≥ 0. {\displaystyle k\geq 0.} Φ G − u ( x ) = Φ G − v ( x
Gaussian network model (4,574 words) [view diff] exact match in snippet view article find links to article
unitary matrix, UT = U−1, of the eigenvectors ui of Γ and Λ is the diagonal matrix of eigenvalues λi. The frequency and shape of a mode is represented
PageRank (8,808 words) [view diff] exact match in snippet view article find links to article
denotes the adjacency matrix of the graph and K {\displaystyle K} is the diagonal matrix with the outdegrees in the diagonal. The probability calculation is
GCD matrix (1,377 words) [view diff] exact match in snippet view article find links to article
and Δ {\displaystyle \Delta } is the n × n {\displaystyle n\times n} diagonal matrix, whose diagonal elements are δ i = ∑ d ∣ x i d ∤ x t x t < x i ( f
Minimum mean square error (9,310 words) [view diff] exact match in snippet view article find links to article
observation noise is uncorrelated. That is, C Z {\displaystyle C_{Z}} is a diagonal matrix. In such cases, it is advantageous to consider the components of y
Birefringence (6,595 words) [view diff] exact match in snippet view article find links to article
direction of the optic axis of a uniaxial crystal), resulting in a diagonal matrix for the permittivity tensor ε: where the diagonal values are squares
Exchange interaction (3,629 words) [view diff] exact match in snippet view article find links to article
values of a matrix are its diagonal elements after it is converted to a diagonal matrix (that is, eigenvalues). Now, the characteristic values of the square
E8 lattice (3,560 words) [view diff] exact match in snippet view article find links to article
The full E8 Weyl group is generated by this subgroup and the block diagonal matrix H4⊕H4 where H4 is the Hadamard matrix H 4 = 1 2 [ 1 1 1 1 1 − 1 1 −
Modes of variation (1,668 words) [view diff] exact match in snippet view article find links to article
\mathbf {\Sigma } } , and Λ {\displaystyle \mathbf {\Lambda } } is a diagonal matrix whose entries are the eigenvalues of Σ {\displaystyle \mathbf {\Sigma
Zonal spherical function (6,698 words) [view diff] exact match in snippet view article find links to article
diagonal matrix with positive entries. Thus g = uaw with w = u* v, so that any K-biinvariant function on G corresponds to a function of the diagonal matrix
Von Neumann entropy (5,049 words) [view diff] exact match in snippet view article find links to article
entangled state if the reduced state of each subsystem of ρ is the diagonal matrix ( 1 n ⋱ 1 n ) . {\displaystyle {\begin{pmatrix}{\frac {1}{n}}&&\\&\ddots
Logarithm of a matrix (2,982 words) [view diff] exact match in snippet view article find links to article
Let A ′ = V − 1 A V . {\displaystyle A'=V^{-1}AV.} Then A′ will be a diagonal matrix whose diagonal elements are eigenvalues of A. Replace each diagonal
Schur orthogonality relations (2,618 words) [view diff] exact match in snippet view article find links to article
to the identity representation. The trace of a matrix is a sum of diagonal matrix elements, Tr ⁡ ( Γ ( R ) ) = ∑ m = 1 l Γ ( R ) m m . {\displaystyle
Local regression (5,124 words) [view diff] exact match in snippet view article find links to article
{\displaystyle (x_{i}-x)^{j}} ; W {\displaystyle \mathbf {W} } is a diagonal matrix of the smoothing weights w i ( x ) {\displaystyle w_{i}(x)} ; and y
Resonance (7,933 words) [view diff] exact match in snippet view article find links to article
g { k i } {\displaystyle {\bf {K}}={\rm {diag}}\,\{k_{i}\}} is the diagonal matrix of the degrees of the network's nodes. Then, for a network of classical
Caravelli-Traversa-Di Ventra equation (1,978 words) [view diff] exact match in snippet view article find links to article
memristor; its physical origin is the charge mobility in the conductor. The diagonal matrix and vector X = diag ⁡ ( X → ) {\displaystyle X=\operatorname {diag}
Generalized minimal residual method (3,328 words) [view diff] exact match in snippet view article find links to article
squares problem). Note that, for symmetric matrices, a symmetric tri-diagonal matrix is actually achieved, resulting in the MINRES method. Because columns
Propagation of uncertainty (3,984 words) [view diff] exact match in snippet view article find links to article
words, even if Σ x {\displaystyle {\boldsymbol {\Sigma }}^{x}} is a diagonal matrix, Σ f {\displaystyle {\boldsymbol {\Sigma }}^{f}} is in general a full
Restricted representation (3,061 words) [view diff] exact match in snippet view article find links to article
are complex numbers. Each matrix U in Sp(N) is conjugate to a block diagonal matrix with entries q i = ( z i 0 0 z ¯ i ) , {\displaystyle
Testing in binary response index models (998 words) [view diff] exact match in snippet view article find links to article
{V}}D^{T}/n)^{-1}(D{\hat {\beta }}_{u}){\xrightarrow {d}}X_{Q}^{2}} Where D is a diagonal matrix with the last Q diagonal entries as 0 and others as 1. If the restricted
Closed-subgroup theorem (2,905 words) [view diff] exact match in snippet view article find links to article
generated by X is not closed if and only if X is similar over C to a diagonal matrix with two entries of irrational ratio. Let h ⊂ g be a Lie subalgebra
Simplex (7,872 words) [view diff] exact match in snippet view article find links to article
orthogonal matrix Q, there is a choice of basis in which Q is a block diagonal matrix Q = diag ⁡ ( Q 1 , Q 2 , … , Q k ) , {\displaystyle Q=\operatorname
Phase retrieval (2,898 words) [view diff] exact match in snippet view article find links to article
{\displaystyle \mathbf {W} _{r}} be the N × N {\displaystyle N\times N} diagonal matrix with diagonal elements ( w r [ 0 ] , w r [ 1 ] , … , w r [ N − 1 ]
Williamson theorem (535 words) [view diff] exact match in snippet view article find links to article
\Lambda } , where Λ {\displaystyle \Lambda } a real positive-definite diagonal matrix containing the singular values of A {\displaystyle A} . For any orthogonal
Substitution model (8,854 words) [view diff] exact match in snippet view article find links to article
&\ddots &\vdots \\0&\ldots &\lambda _{4}\end{pmatrix}}\,,} where Λ is a diagonal matrix and where { λ i } {\displaystyle \lbrace \lambda _{i}\rbrace } are
Touchscreen (9,280 words) [view diff] exact match in snippet view article find links to article
make a multi-touch capacitance touchscreen, is to sandwich an x/y or diagonal matrix of fine, insulation coated copper or tungsten wires between two layers
Multiple factor models (1,790 words) [view diff] exact match in snippet view article find links to article
covariance matrix of factor returns, and D {\displaystyle D} is a block diagonal matrix of specific returns. The matrix C {\displaystyle C} is then used for
Knowledge graph embedding (5,948 words) [view diff] exact match in snippet view article find links to article
relation is a diagonal matrix, the scoring function can not distinguish asymmetric facts. ComplEx: As DistMult uses a diagonal matrix to represent the
Greek letters used in mathematics, science, and engineering (6,018 words) [view diff] exact match in snippet view article find links to article
in first-order logic the cosmological constant the lambda baryon a diagonal matrix of eigenvalues in linear algebra a lattice molar conductivity in electrochemistry
Degenerate energy levels (6,123 words) [view diff] exact match in snippet view article find links to article
eigenbasis of A ^ {\displaystyle {\hat {A}}} is not a diagonal but a block diagonal matrix, i.e. the degenerate eigenvectors of A ^ {\displaystyle {\hat {A}}}
Matrix differential equation (2,732 words) [view diff] exact match in snippet view article find links to article
diagonalisation and leveraging the property that the matrix exponential of a diagonal matrix is the same as element-wise exponentiation of its elements) exp ⁡ (
Permanent (mathematics) (4,567 words) [view diff] exact match in snippet view article
{1}{\det(I-XA)}},} where I is the order n identity matrix and X is the diagonal matrix with diagonal [ x 1 , x 2 , … , x n ] . {\displaystyle [x_{1},x_{2}
Viscous stress tensor (2,581 words) [view diff] exact match in snippet view article find links to article
in question. (It is represented in any coordinate system by a 3 × 3 diagonal matrix with equal values along the diagonal.) It is numerically equal to ⁠1/3⁠
Quantum entanglement (13,888 words) [view diff] exact match in snippet view article find links to article
entangled state if the reduced state of each subsystem of ρ is the diagonal matrix [ 1 n ⋱ 1 n ] . {\displaystyle {\begin{bmatrix}{\frac {1}{n}}&&\\&\ddots
Gaussian process approximations (2,033 words) [view diff] exact match in snippet view article find links to article
}}=K\left({\bar {X}},{\bar {X}}\right)} and D {\displaystyle \mathbf {D} } is a diagonal matrix. Depending on the method and application various ways of selecting
Independent component analysis (7,503 words) [view diff] exact match in snippet view article find links to article
D Q T , {\displaystyle (X^{*})^{T}X^{*}=Q\,D\,Q^{T},} where D is a diagonal matrix with positive entries (assuming X ∗ {\displaystyle X^{*}} has maximum
Chern–Weil homomorphism (2,782 words) [view diff] exact match in snippet view article find links to article
so that, in the matrix term, Ω {\displaystyle \Omega } is the block diagonal matrix with ΩI's on the diagonal. Then, since det ( I − t Ω 2 π i ) = det
Modular group representation (832 words) [view diff] exact match in snippet view article find links to article
{L}}^{2}} . The modular T {\displaystyle T} -matrix is defined to be a diagonal matrix whose ( [ A ] , [ A ] ) {\displaystyle ([A],[A])} -entry is the θ {\displaystyle
Black hole information paradox (8,927 words) [view diff] exact match in snippet view article find links to article
}}\!(r)]\}\end{aligned}}} The first term of H {\displaystyle H} is a diagonal matrix representing the microscopic state of black holes no heavier than the
Hadamard's maximal determinant problem (2,429 words) [view diff] exact match in snippet view article find links to article
can be written as B−J where J is the all-one matrix and B is a block-diagonal matrix whose diagonal blocks are of the form (n−3)I+4J. Moreover, he showed
Holomorphic functional calculus (5,482 words) [view diff] exact match in snippet view article find links to article
disc containing only λi from the spectrum. The corresponding block-diagonal matrix ⨁ i T i {\displaystyle \bigoplus _{i}T_{i}} is the Jordan canonical
Diffusion-weighted magnetic resonance imaging (9,251 words) [view diff] exact match in snippet view article find links to article
_{1}+\lambda _{2}+\lambda _{3}} where Λ {\displaystyle \Lambda } is a diagonal matrix with eigenvalues λ 1 {\displaystyle \lambda _{1}} , λ 2 {\displaystyle
Christoffel symbols (8,239 words) [view diff] exact match in snippet view article find links to article
\eta _{ab}=\delta _{ab}} . For pseudo-Riemannian manifolds, it is the diagonal matrix having signature ( p , q ) {\displaystyle (p,q)} . The notation e i
Spin representation (4,482 words) [view diff] exact match in snippet view article find links to article
abelian subalgebra. Let ε1, ... εm be the basis of h∗ such that, for a diagonal matrix A, εk(ρA) is the kth diagonal entry of A. Clearly this is a basis for
Rate equation (7,576 words) [view diff] exact match in snippet view article find links to article
\operatorname {diag} } be the function that takes a vector and constructs a diagonal matrix whose on-diagonal entries are those of the vector. Let L − 1 {\displaystyle
Generalized additive model (5,716 words) [view diff] exact match in snippet view article find links to article
coefficients' freedom to vary. For example, if W {\displaystyle W} is the diagonal matrix of IRLS weights at convergence, and X {\displaystyle X} is the GAM
Essential matrix (3,215 words) [view diff] exact match in snippet view article find links to article
{\displaystyle \mathbf {\Sigma } } is a 3 × 3 {\displaystyle 3\times 3} diagonal matrix with Σ = ( s 0 0 0 s 0 0 0 0 ) {\displaystyle \mathbf {\Sigma }
Eight-point algorithm (3,016 words) [view diff] exact match in snippet view article find links to article
} are orthogonal matrices and S {\displaystyle \mathbf {S} } is a diagonal matrix which contains the singular values of E e s t {\displaystyle \mathbf
Vector generalized linear model (4,746 words) [view diff] exact match in snippet view article find links to article
package has an xij argument that allows the successive elements of the diagonal matrix to be inputted. Yee (2015) describes an R package implementation in
Affine term structure model (2,599 words) [view diff] exact match in snippet view article find links to article
={\begin{pmatrix}1&1&0\end{pmatrix}}^{T}} and Ω {\displaystyle \Omega } is a diagonal matrix with entries Ω i i = σ i 2 {\displaystyle \Omega _{ii}=\sigma _{i}^{2}}
Conjugate gradient method (8,446 words) [view diff] exact match in snippet view article find links to article
{\displaystyle Q} is a random orthogonal matrix and D {\displaystyle D} is a diagonal matrix with eigenvalues ranging from λ n = 1 {\displaystyle \lambda _{n}=1}
Lorentz group (9,875 words) [view diff] exact match in snippet view article find links to article
{for} \,\mathrm {all} \,t\right\}} . If η {\displaystyle \eta } is the diagonal matrix with diagonal entries (1, −1, −1, −1), then the Lie algebra o ( 1
Method of steepest descent (5,062 words) [view diff] exact match in snippet view article find links to article
1 {\displaystyle S''_{zz}(0)=PJ_{z}P^{-1}} , where Jz is an upper diagonal matrix containing the eigenvalues and det P ≠ 0; hence, det S z z ″ ( 0 )
NetworkX (3,290 words) [view diff] exact match in snippet view article find links to article
{\displaystyle L=D-A} , where D {\displaystyle D} is the degree matrix (a diagonal matrix where D i i {\displaystyle D_{ii}} is the degree of vertex i) and A
Graphon (5,460 words) [view diff] exact match in snippet view article find links to article
matrix of ( K n , n ) {\displaystyle (K_{n,n})} looks like a block off-diagonal matrix, with two blocks of ones and two blocks of zeros. For example, the
Memristor (13,731 words) [view diff] exact match in snippet view article find links to article
\Omega X)^{-1}\Omega {\vec {S}}} where X {\displaystyle X} is the diagonal matrix with elements x i {\displaystyle x_{i}} on the diagonal, α , β , χ
Multivariate kernel density estimation (4,242 words) [view diff] exact match in snippet view article find links to article
classes. Left. S positive scalar times the identity matrix. Centre. D diagonal matrix with positive entries on the main diagonal. Right. F symmetric positive
Kalman filter (20,935 words) [view diff] exact match in snippet view article find links to article
where U is a unit triangular matrix (with unit diagonal), and D is a diagonal matrix. Between the two, the U-D factorization uses the same amount of storage
Cauchy stress tensor (8,318 words) [view diff] exact match in snippet view article find links to article
are the principal stresses and the stress tensor is represented by a diagonal matrix: σ i j = [ σ 1 0 0 0 σ 2 0 0 0 σ 3 ] {\displaystyle \sigma
Symmetric cone (16,608 words) [view diff] exact match in snippet view article find links to article
Hr(A) there is an algebra automorphism carrying the matrix onto a diagonal matrix with real entries; it is then straightforward to check that [L(a),L(b)]
Classical XY model (4,861 words) [view diff] exact match in snippet view article find links to article
_{n}\psi _{n}^{*}(\theta ')\psi _{n}(\theta )} which represents a diagonal matrix representation in the basis of its plane-wave eigenfunctions ψ = exp
Two-state quantum system (6,603 words) [view diff] exact match in snippet view article find links to article
boundary conditions on how it acts on a general state.) This results in a diagonal matrix with the diagonal elements being the energies of the eigenstates and
Space-time adaptive processing (2,884 words) [view diff] exact match in snippet view article find links to article
techniques or diagonal-loading SMI (where a small magnitude, random diagonal matrix is added to attempt to stabilize the matrix prior to inverting). This
Manifold regularization (3,872 words) [view diff] exact match in snippet view article find links to article
and x j {\displaystyle x_{j}} . Define D {\displaystyle D} to be a diagonal matrix with D i i = ∑ j = 1 ℓ + u W i j {\displaystyle D_{ii}=\sum _{j=1}^{\ell
Strong subadditivity of quantum entropy (4,718 words) [view diff] exact match in snippet view article find links to article
_{12}} (and similarly, σ 12 {\displaystyle \sigma _{12}} ) to be block diagonal matrix with blocks λ k ρ k {\displaystyle \lambda _{k}\rho _{k}} (and λ k
Generalized singular value decomposition (4,126 words) [view diff] exact match in snippet view article find links to article
^{+}=\left\lceil E_{1}^{+},E_{2}^{+}\right\rfloor } for any block-diagonal matrix. Then define A i + = Q [ Y − 1 0 ] Σ i + U i ∗ {\displaystyle
3D rotation group (11,444 words) [view diff] exact match in snippet view article find links to article
axis fixed (Euler's rotation theorem), and is conjugate to a block diagonal matrix of the form D = ( cos ⁡ θ − sin ⁡ θ 0 sin ⁡ θ cos ⁡ θ 0 0 0 1 ) = e
Hayes-Wheelwright matrix (2,524 words) [view diff] exact match in snippet view article find links to article
to take advantage of economies of scale. Firms operating along the diagonal matrix are assumed to perform better than those too far from the diagonal
Oscillator representation (21,527 words) [view diff] exact match in snippet view article find links to article
latter is obtained by taking the transpose and conjugating by the diagonal matrix with entries ±1. Hence H also contains ( a ¯ − c ¯ − b ¯ d ¯ ) . {\displaystyle
CMA-ES (7,545 words) [view diff] exact match in snippet view article find links to article
of C {\displaystyle C} remark first that this is the case for any diagonal matrix C {\displaystyle C} , because the coordinate-wise maximizer is independent
Khatri–Rao product (4,395 words) [view diff] exact match in snippet view article find links to article
and in optimizing the solution of inverse problems dealing with a diagonal matrix. In 1996 the column-wise Khatri–Rao product was proposed to estimate
Hook length formula (5,141 words) [view diff] exact match in snippet view article find links to article
_{k}(\mathbb {C} )} , and the Schur polynomial is also the character of the diagonal matrix d i a g ( x 1 , … , x k ) {\displaystyle \mathrm {diag} (x_{1},\ldots
Biological motion perception (4,196 words) [view diff] exact match in snippet view article find links to article
radial basis function for each neuron and C {\displaystyle C} is a diagonal matrix which contains elements that have been set during training and correspond
Matroid parity problem (3,443 words) [view diff] exact match in snippet view article find links to article
{\begin{pmatrix}0&M\\M^{T}&T\end{pmatrix}}-m,} where T {\displaystyle T} is a block diagonal matrix whose blocks are 2 × 2 {\displaystyle 2\times 2} submatrices of the
Capelli's identity (6,222 words) [view diff] exact match in snippet view article find links to article
matrix with elements Qil, and diag(n − 1, n − 2, ..., 1, 0) means the diagonal matrix with the elements n − 1, n − 2, ..., 1, 0 on the diagonal. See proposition
Hermitian symmetric space (7,418 words) [view diff] exact match in snippet view article find links to article
the case of H = SU(2) the symmetry σ is given by conjugation by the diagonal matrix with entries ±i so that σ ( α β − β ¯ α ¯ ) = ( α − β β ¯ α ¯ ) {\displaystyle
Spillover (experiment) (3,414 words) [view diff] exact match in snippet view article
exposure probabilities for each unit in the analysis. First, define a diagonal matrix with a vector of treatment assignment probabilities P = diag ⁡ ( p
Ergodic flow (5,093 words) [view diff] exact match in snippet view article find links to article
spectral subspace corresponding to the interval [a,b]. Let g(s) be the diagonal matrix with entries s and s−1 for |s| > 1. Then g(s)P[a,b]g(s)−1 = P[s2a,
Waste input-output model (3,972 words) [view diff] exact match in snippet view article find links to article
{x}}_{T}^{-1}.\end{aligned}}} Here, v ^ {\displaystyle {\hat {v}}} refers to a diagonal matrix where the ( i , i ) {\displaystyle (i,i)} element is the i {\displaystyle
Biochemical systems equation (2,318 words) [view diff] exact match in snippet view article find links to article
Since each parameter only affects one reaction, the matrix will be a diagonal matrix: E = [ ∂ v 1 ∂ k 1 0 0 0 0 ∂ v 2 ∂ k 2 0 0 0 0 ∂ v 3 ∂ k 3 0 0 0 ∂
Light-front quantization applications (9,006 words) [view diff] exact match in snippet view article find links to article
the basis, corresponding to fixed number of particles, it is a non-diagonal matrix. Its eigenvector—the state vector of a physical system—is an infinite
Infinitesimal rotation matrix (2,832 words) [view diff] exact match in snippet view article find links to article
R=QSQ^{\textsf {T}},} where Q {\displaystyle Q} is orthogonal and S is a block diagonal matrix with ⌊ n / 2 ⌋ {\textstyle \lfloor n/2\rfloor } blocks of order 2,
Hamiltonian cycle polynomial (2,239 words) [view diff] exact match in snippet view article find links to article
doesn't depend on the matrix's diagonal entries, adding an arbitrary diagonal matrix doesn't change this polynomial too. These two types of transformation
Model-based clustering (3,522 words) [view diff] exact match in snippet view article find links to article
{\displaystyle A_{g}={\mbox{diag}}\{A_{1,g},\ldots ,A_{d,g}\}} is a diagonal matrix whose elements are proportional to the eigenvalues of Σ g {\displaystyle
Mutation (Jordan algebra) (15,817 words) [view diff] exact match in snippet view article
corresponds to the automorphism of E = Hp + q(R) given by conjugating by the diagonal matrix with p diagonal entries equal to 1 and q to −1. Without loss of generality
Differential forms on a Riemann surface (11,053 words) [view diff] exact match in snippet view article find links to article
+ |λ|2)−(k−j)/2. It is therefore compact because it is given by a diagonal matrix with diagonal entries tending to zero. Elliptic regularity (Weyl's
Force control (3,691 words) [view diff] exact match in snippet view article find links to article
matrix Σ indicates which space directions are restricted and is a diagonal matrix consisting of zeros and ones. Which spatial direction is restricted
Finite subgroups of SU(2) (3,956 words) [view diff] exact match in snippet view article
representing g in Vj is just S2j ( g ). Since every g is conjugate to a diagonal matrix with diagonal entries ζ {\displaystyle \zeta } and ζ − 1 {\displaystyle
Light-front computational methods (11,024 words) [view diff] exact match in snippet view article find links to article
left eigenstates. This construction can be extended to include off-diagonal matrix elements and gauge projections. Physical quantities can then be computed
Tavis–Cummings model (5,524 words) [view diff] exact match in snippet view article find links to article
{\displaystyle m\gtrsim 2s} in a large photon-rich system, the off-diagonal matrix elements in H ^ T C {\displaystyle {\hat {H}}_{TC}} (above) replace