vertex number

См. также в других словарях:

• Vertex (graph theory) — For other uses, see Vertex (disambiguation). A graph with 6 vertices and 7 edges where the vertex number 6 on the far left is a leaf vertex or a pendant vertex In graph theory, a vertex (plural vertices) or node is the fundamental unit out of… …   Wikipedia

• Vertex configuration — In polyhedral geometry a vertex configuration is a short hand notation for representing a polyhedron vertex figure as the sequence of faces around a vertex. For uniform polyhedra there is only one vertex type and therefore the vertex… …   Wikipedia

• Vertex cover — In the mathematical discipline of graph theory, a vertex cover of a graph is a set of vertices such that each edge of the graph is incident to at least one vertex of the set. The problem of finding a minimum vertex cover is a classical… …   Wikipedia

• Vertex cover problem — In computer science, the vertex cover problem or node cover problem is an NP complete problem and was one of Karp s 21 NP complete problems. It is often used in complexity theory to prove NP hardness of more complicated problems. Definition A… …   Wikipedia

• Vertex model — A vertex model is a type of statistical mechanics model in which the Boltzmann weights are associated with a vertex in the model (representing an atom or particle). This contrasts with a nearest neighbour model, such as the Ising model, in which… …   Wikipedia

• Vertex Buffer Object — A Vertex Buffer Object (VBO) is an OpenGL extension that provides methods for uploading data ( vertex, normal vector, color, etc) to the video device for non immediate mode rendering. VBOs offer substantial performance gains over immediate mode… …   Wikipedia

• number game — Introduction       any of various puzzles and games that involve aspects of mathematics.       Mathematical recreations comprise puzzles and games that vary from naive amusements to sophisticated problems, some of which have never been solved.… …   Universalium

• Vertex enumeration problem — In mathematics, the vertex enumeration problem for a polyhedron, a polyhedral cell complex, a hyperplane arrangement, or some other object of discrete geometry, is the problem of determination of the object s vertices given some formal… …   Wikipedia

• Domatic number — A domatic partition. In graph theory, a domatic partition of a graph G = (V,E) is a partition of V into disjoint sets V1, V2,...,VK such that each Vi is a dominati …   Wikipedia

• Feedback vertex set — In the mathematical discipline of graph theory, a feedback vertex set of a graph is a set of vertices whose removal leaves a graph without cycles. In other words, each feedback vertex set contains at least one vertex of any cycle in the graph.… …   Wikipedia

• Intersection number (graph theory) — In the mathematical field of graph theory, the intersection number of a graph is the smallest number of elements in a representation of G as an intersection graph of finite sets. Equivalently, it is the smallest number of cliques needed to cover… …   Wikipedia