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Longer titles found: Intersection number (graph theory) (view)

searching for Intersection number 28 found (59 total)

Intersection theory (2,216 words) [view diff] exact match in snippet view article find links to article

for the Poincaré duals of a and b. Then λM (a, b) is the oriented intersection number of A and B, which is well-defined because since dimensions of A and

Pseudo-intersection (98 words) [view diff] exact match in snippet view article find links to article

family contains all but a finite number of elements of S. The pseudo-intersection number, sometimes denoted by the fraktur letter 𝔭, is the smallest size

Chasles–Cayley–Brill formula (206 words) [view diff] exact match in snippet view article find links to article

proof. The number of united points of the correspondence is the intersection number of the correspondence with the diagonal Δ of C×C. The correspondence

Road signs in Norway (3,222 words) [view diff] exact match in snippet view article find links to article

the right direction. Intersection number Blue for motorways with multiple lanes. Intended solely for orientation. Intersection number Yellow for general

Castelnuovo's contraction theorem (206 words) [view diff] exact match in snippet view article find links to article

X {\displaystyle X} (which means a smooth rational curve of self-intersection number −1), then there exists a morphism from X {\displaystyle X} to another

Diagonal (1,333 words) [view diff] exact match in snippet view article find links to article

itself by the small motion (θ, θ) to (θ, θ + ε). In general, the intersection number of the graph of a function with the diagonal may be computed using

Poincaré duality (2,740 words) [view diff] exact match in snippet view article find links to article

the homology classes to be transverse and computing their oriented intersection number. For the torsion linking form, one computes the pairing of x and

Hirzebruch surface (1,693 words) [view diff] exact match in snippet view article find links to article

section. This curve has self-intersection number −n, and is the only irreducible curve with negative self intersection number. The only irreducible curves

Fano surface (742 words) [view diff] exact match in snippet view article find links to article

that cut the line Ls. The self-intersection of Cs is equal to the intersection number of Cs and Ct for t a generic point. The intersection of Cs and Ct

Curve complex (1,420 words) [view diff] exact match in snippet view article find links to article

definition by joining vertices if the corresponding curves have minimal intersection number. With this alternate definition, the resulting complex is isomorphic

The Pale (band) (1,695 words) [view diff] case mismatch in snippet view article

Devereux and Shane Wearen appeared in the Irish independent movie, Intersection Number 9, which also featured a number of songs for The Pale on its soundtrack

Intersection form of a 4-manifold (1,022 words) [view diff] no match in snippet view article find links to article

non-smoothable 4-manifolds, for example the E8 manifold. Intersection form Intersection_number_of_immersions Kirby, Robion (1989), The topology of 4-manifolds,

Enriques–Kodaira classification (4,245 words) [view diff] exact match in snippet view article find links to article

saying that X has no (−1)-curves (smooth rational curves with self-intersection number −1). (In the more modern terminology of the minimal model program

Double limit theorem (295 words) [view diff] exact match in snippet view article find links to article

have the property that any nonzero measured lamination has positive intersection number with at least one of them, then the sequence of quasi-Fuchsian groups

Ample line bundle (6,874 words) [view diff] exact match in snippet view article find links to article

ample, meaning that the associated line bundle O(D) is ample. The intersection number D ⋅ C {\displaystyle D\cdot C} can be defined as the degree of the

H-cobordism (1,914 words) [view diff] exact match in snippet view article find links to article

{\displaystyle \langle h_{\alpha }^{k}\mid h_{\beta }^{k-1}\rangle } is the intersection number of the k-attaching sphere and the (k − 1)-belt sphere. 2) Handle

Rokhlin's theorem (1,517 words) [view diff] exact match in snippet view article find links to article

Σ {\displaystyle \Sigma } to be any small sphere, which has self intersection number 0, so Rokhlin's theorem follows. The Freedman–Kirby theorem (Freedman

Flip (mathematics) (1,229 words) [view diff] exact match in snippet view article

{\displaystyle K_{X_{i}}} is no longer a Cartier divisor, so the intersection number K X i ⋅ C {\displaystyle K_{X_{i}}\cdot C} with a curve C {\displaystyle

Linear system of divisors (2,910 words) [view diff] exact match in snippet view article find links to article

to check nefness of a divisor class, it suffices to compute the intersection number with curves contained in the base locus of the class. So, roughly

Ho Chi Minh City–Long Thanh–Dau Giay Expressway (681 words) [view diff] exact match in snippet view article find links to article

gate, BR - bridge The section coinciding with has its route and intersection number written in italics "Dự thảo QUY CHUẨN KỸ THUẬT QUỐC GIA VỀ BÁO HIỆU

Elliptic surface (1,883 words) [view diff] exact match in snippet view article find links to article

singular fibers should contain no smooth rational curves with self-intersection number −1.) It gives: Kodaira's symbol for the fiber, André Néron's symbol

Glossary of algebraic geometry (12,496 words) [view diff] exact match in snippet view article find links to article

usually means an n-th tensor power of L but can also mean the self-intersection number of L. If L = O X {\displaystyle L={\mathcal {O}}_{X}} , the structure

Thurston boundary (1,393 words) [view diff] exact match in snippet view article find links to article

{F}}} ). Then if σ ∈ S {\displaystyle \sigma \in {\mathcal {S}}} the intersection number is defined by: i ( ( F , μ ) , σ ) = inf γ ∈ σ μ ( γ ) {\displaystyle

Free factor complex (1,676 words) [view diff] exact match in snippet view article find links to article

1093/qmathj/49.4.459. Kapovich, Ilya; Lustig, Martin (2009). "Geometric intersection number and analogues of the curve complex for free groups". Geometry & Topology

Glossary of symplectic geometry (554 words) [view diff] exact match in snippet view article find links to article

{\displaystyle (M,\omega )} of dimension 2n. Maslov index (sort of an intersection number defined on Lagrangian Grassmannian.) moment Moser's trick Novikov

Topological recursion (4,390 words) [view diff] exact match in snippet view article find links to article

_{d_{1}}\dots \tau _{d_{n}}\right\rangle _{g}} is the Witten-Kontsevich intersection number of Chern classes of cotangent line bundles in the compactified moduli

Glossary of set theory (11,628 words) [view diff] exact match in snippet view article find links to article

as parameters ot Abbreviation for "order type of" 𝔭 The pseudo-intersection number, the smallest cardinality of a family of infinite subsets of ω that

Road signs in Croatia (1,988 words) [view diff] exact match in snippet view article find links to article

lanes with an restriction C109 General speed limits C110 Highway intersection number C111 International road number (European route) C112 Motorway number