根据Betten和Wenzel于2003年提出的任意基数集上的拟阵的定义,将有限拟阵的约束的概念推广到无限,并讨论此类无限拟阵的约束所具有的性质,最后利用图论知识,定义一个无限拟阵,验证该推广的正确性.
[1] WELSH D. Matroid theory [M]. London, UK:Academic Press 1976.
[2] OXLEY J. Infinite matroids in matroids applications [M]. Cambridge:Camb Univ Press 1992.
[3] Dieter Betten, Walter Wenzel. On linear spaces and matroids of arbitrary cardinality [J]. Algebra Universalis 2003, 3(3).
[4] MAO Hua. An axiom scheme for cyclic flats of a matroid of arbitrary cardinality [J]. International Journal of Pure and Applied Mathematics 2007, 41(08).
[5] 毛华. 任意基数集上的拟阵之单扩张 [J]. 2007.
[6] Hua Mao. On geometric lattices and matroids of arbitrary cardinality [J]. Ars Combinatoria: An Australian-Canadian Journal of Combinatorics 2006, 0(0).
[7] KONIG D. Theory of finite and infinite graphs [M]. Boston:Birkhuser 1990.