cardinality matching

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• Matching (graph theory) — In the mathematical discipline of graph theory, a matching or independent edge set in a graph is a set of edges without common vertices. It may also be an entire graph consisting of edges without common vertices. Covering packing dualities… …   Wikipedia

• Matching (Graphentheorie) — Die Theorie um das Finden von Matchings in Graphen ist in der diskreten Mathematik ein umfangreiches Teilgebiet, das in die Graphentheorie eingeordnet wird. Folgende Situation wird dabei betrachtet: Gegeben eine Menge von Dingen und zu diesen… …   Deutsch Wikipedia

• Maximum flow problem — An example of a flow network with a maximum flow. The source is s, and the sink t. The numbers denote flow and capacity. In optimization theory, the maximum flow problem is to find a feasible flow through a single source, single sink flow network …   Wikipedia

• Hopcroft–Karp algorithm — The Hopcroft–Karp algorithm finds maximum cardinality matchings in bipartite graphs in O(sqrt{V} E) time, where V is the number of vertices and E is the number of edges of the graph. [John E. Hopcroft, Richard M. Karp: An n^{5/2} Algorithm for… …   Wikipedia

• Dilworth's theorem — In mathematics, in the areas of order theory and combinatorics, Dilworth s theorem characterizes the width of any finite partially ordered set in terms of a partition of the order into a minimum number of chains. It is named for the mathematician …   Wikipedia

• set theory — the branch of mathematics that deals with relations between sets. [1940 45] * * * Branch of mathematics that deals with the properties of sets. It is most valuable as applied to other areas of mathematics, which borrow from and adapt its… …   Universalium

• Bitmap index — A bitmap index is a special kind of database index.Bitmap indexes have traditionally been considered to work well for data such as gender, which has a small number of distinct values, e.g., male and female, but many occurrences of those values.… …   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

• Tutte theorem — In the mathematical discipline of graph theory the Tutte theorem, named after William Thomas Tutte, is a characterization of graphs with perfect matchings. It is a generalization of the marriage theorem and is a special case of the Tutte Berge… …   Wikipedia

• List of NP-complete problems — Here are some of the more commonly known problems that are NP complete when expressed as decision problems. This list is in no way comprehensive (there are more than 3000 known NP complete problems). Most of the problems in this list are taken… …   Wikipedia

• Liste De Problèmes NP-Complets — Ceci est une liste des problèmes NP complets les plus connus en théorie de la complexité des algorithmes, exprimés sous la forme d un problèmes de la décision. Puisqu on connaît plus de 3000 problèmes NP complets, cette liste n est pas exhaustive …   Wikipédia en Français