Infinite Gammoids

[摘要] Finite strict gammoids, introduced in the early 1970's, are matroids defined via finite digraphs equipped with some set of sinks: a set of vertices is independent if it admits a linkage to these sinks. In particular, an independent set is maximal (i.e. a

[学科分类] 离散数学和组合数学

[关键词] Infinite matroids;strict gammoids;transversal matroid;linkage;infinite digraphs;rays