一个非2-可着色的少边k-一致超图的构造
Construction of a Non-2-colorable k-uniform Hypergraph with Few Edges
摘要:
我们证明了如何构造一个具有(2^(1 + o(1)^k条边的非2-可着色k-一致超图。利用超图的对偶性和单调k-CNF公式,给出了一个具有(2^(1 + o(1)^k子句的不可满足单调k-CNF
英文摘要:
We show how to construct a non-2-colorable k-uniform hypergraph with (2^(1 + o(1)))^k edges. By the duality of hypergraphs and monotone k-CNF-formulas this gives an unsatisfiable monotone k-CNF with (2^(1 + o(1)))^k clauses
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