# treewidth

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**Tree decomposition**— A graph with eight vertices, and a tree decomposition of it onto a tree with six nodes. Each graph edge connects two vertices that are listed together at some tree node, and each graph vertex is listed at the nodes of a contiguous subtree of the… … Wikipedia**Minor (graph theory)**— In graph theory, an undirected graph H is called a minor of the graph G if H is isomorphic to a graph that can be obtained by zero or more edge contractions on a subgraph of G. The theory of graph minors began with Wagner s theorem that a graph… … Wikipedia**Forum Corporation**— Infobox Company name = The Forum Corporation type = private genre = foundation = 1971 founder = location city = Boston location country = United States location = locations = area served = North America, EMEA, Asia Pacific key people = Ed Boswell … Wikipedia**Operation USA**— (aka Operation California, In.) Founder(s) Richard M. Walden Founded 1979, with its California incorporation date in May 1980 Location Los Angeles, California Key people Ric … Wikipedia**Study Tech**— Study Technology, or Study Tech, is a methodology for learning developed by L. Ron Hubbard, founder of the Church of Scientology. Hubbard s Study Technology is used by Church of Scientology members as part of their training, and is also promoted… … Wikipedia**Manuel Alejandro**— (born in 1933) is the son of one of Spain s most renowned contemporary symphonists, Germán Álvarez Beigbeder. It was his father, an accomplished musician, professor, and composer, who inspired Manuel Alejandro to pursue music and become a… … Wikipedia**MarHedge**— is a semi monthly financial newsletter. It was first circulated in 1994,[1] originally under the name HEDGE.[2] The journal has also gone by the name Managed Account Reports LLC.[3] After leaving the magazine, former managing editor Michael… … Wikipedia**Kowloon Walled City**— An aerial view of Kowloon Walled City in 1989 Traditional Chinese … Wikipedia**Decomposition method (constraint satisfaction)**— In constraint satisfaction, a decomposition method translates a constraint satisfaction problem into another constraint satisfaction problem that is binary and acyclic. Decomposition methods work by grouping variables into sets, and solving a… … Wikipedia**Clique-sum**— A clique sum of two planar graphs and the Wagner graph, forming a K5 free graph. In graph theory, a branch of mathematics, a clique sum is a way of combining two graphs by gluing them together at a clique, analogous to the connected sum operation … Wikipedia