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

searching for Diagonal matrix 168 found (356 total)

alternate case: diagonal matrix

M-matrix (1,180 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
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 (13,669 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
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
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
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
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}
Chromatic adaptation (1,066 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
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
Compact finite difference (1,530 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
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 (2,482 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
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
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
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 (2,370 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
Frobenius covariant (748 words) [view diff] exact match in snippet view article find links to article
λi. The matrix S is defined up to multiplication on the right by a diagonal matrix. If A has no multiple eigenvalues, then let ci be the ith right eigenvector
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
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
Stress (mechanics) (5,556 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
(B, N) pair (991 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 (3,113 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
Schrieffer–Wolff transformation (2,121 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})}
Eigenstate thermalization hypothesis (5,548 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
Eigenvector centrality (1,313 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
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 +
Generalized chi-squared distribution (2,232 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
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
Maximal torus (1,736 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
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
Perron–Frobenius theorem (8,225 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
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}
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
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
Eckart conditions (3,408 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 }}}
Givens rotation (3,250 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
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:
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 −
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
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 ×
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 (2,314 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
Fourier transform on finite groups (2,052 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
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
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
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
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
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
Neuromorphic computing (4,915 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
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
Stress–energy tensor (3,881 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
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
Factor analysis (10,029 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
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}
T-symmetry (4,426 words) [view diff] exact match in snippet view article find links to article
Z2 symmetry generator T2 = UKUK = UU* = U (UT)−1 = Φ, where Φ is a diagonal matrix of phases. As a result, U = ΦUT and UT = UΦ, showing that U = Φ U Φ
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
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,
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
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}
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
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
Gaussian network model (4,570 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
Topological degeneracy (1,877 words) [view diff] exact match in snippet view article find links to article
=\langle \Psi _{2}|O_{x}|\Psi _{2}\rangle } More powerfully, the off-diagonal matrix elements between these distinct ground states for any local operator
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
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
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
Exchange interaction (3,676 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
Zonal spherical function (6,711 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
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
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
E8 lattice (3,576 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 −
Partial correlation (3,780 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
Von Neumann entropy (5,061 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
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}
Von Neumann entropy (5,061 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
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
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
Resonance (7,937 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
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
Local regression (5,833 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
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 ]
Degenerate energy levels (6,118 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}}}
Modular group representation (756 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
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}
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
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
Viscous stress tensor (2,580 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
Knowledge graph embedding (5,945 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
Touchscreen (9,402 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
Greek letters used in mathematics, science, and engineering (6,054 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
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 ⁡ (
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
Independent component analysis (7,462 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
Quantum entanglement (13,712 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
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
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
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 }
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 (8,323 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
MIMO (9,595 words) [view diff] exact match in snippet view article find links to article
{z} \quad {\text{(1.6)}}} where B {\displaystyle \mathbf {B} } is a diagonal matrix with the p {\displaystyle p} th diagonal element equal to ( α ( p )
Vector generalized linear model (4,767 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
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
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}}
Rate equation (7,578 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
Hadamard's maximal determinant problem (2,797 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
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 (4,767 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
Conjugate gradient method (8,421 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 )
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
NetworkX (3,286 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
Multivariate kernel density estimation (4,236 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
Symmetric cone (16,613 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)]
Memristor (13,824 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
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
Strong subadditivity of quantum entropy (4,724 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
Kalman filter (20,444 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
Manifold regularization (3,875 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
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
Cauchy stress tensor (8,300 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
Oscillator representation (21,532 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
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
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
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
CMA-ES (7,569 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
3D rotation group (11,407 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
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
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
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
Matroid parity problem (4,148 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
Discrete dipole approximation (7,005 words) [view diff] exact match in snippet view article find links to article
{\alpha }}_{1}^{-1},\dots ,{\boldsymbol {\alpha }}_{N}^{-1})} is a block-diagonal matrix with each block α j − 1 ∈ C 3 × 3 {\displaystyle {\boldsymbol {\alpha
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 (5,097 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 (3,983 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 (2,872 words) [view diff] exact match in snippet view article find links to article
{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,
Model-based clustering (3,525 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 (11,073 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
Flow-based generative model (9,669 words) [view diff] exact match in snippet view article find links to article
{\displaystyle dp_{1},\dots ,dp_{n-1}} from which we form the square diagonal matrix D {\displaystyle \mathbf {D} } , the columns of which span the rectangle
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
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
Finite subgroups of SU(2) (3,981 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
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