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Covering may refer to: ==Mathematics== *In topology: * * Covering map, a function from one space to another with uniform local neighborhoods * * Cover (topology), a system of (usually, open or closed) sets whose union is a given topological space * * Lebesgue covering dimension, a definition of dimension using topological properties * In graph theory: * *Vertex cover – a set of vertices incident on every edge * *Edge cover – a set of edges incident on every vertex * *Covering graph – a graph related to another graph via a covering map * *cycle double cover, a family of cycles that includes every edge exactly twice * *clique cover, a family of cliques that includes every vertex * *path cover, a family of paths that includes every vertex * *biclique cover, a family of complete bipartite graphs that includes every edge * Covering code, where every word is close to some codeword * Covering lemma in set theory (specifically large cardinal theory) * Covering number of a metric space, the minimum number of smaller balls needed to cover a unit ball * Covering problems, computational tasks of finding a small family of sets whose union is a given set * Covering set, in number theory, a set of prime numbers dividing all the elements of a sequence of numbers 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Covering」の詳細全文を読む スポンサード リンク
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