张福基, 张云浒. 一类(0,1)-多面体[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 1990, (4).DOI:
一类(0,1)-多面体
摘要
本文证明m×n阶(0
1)-矩阵类(R
S)的变换图
当min{m
n}=2时为某一(0
1)-多面体P的图(或骨架)C(P)
进而证明其为Hamilton连通及边泛圈的(除两个例外)。同时指出min{m
n}>2时(R
S)的变换图一般不是一个(0
1)-多面体的图。
Abstract
The class of matrices (R
S) was difined to be. the m×n matrices of zeros and ones with fixed row and column sum vectors. R A Brualdi introduced the concept of interchange graphs of these classes of matrice. We show that when m=2 (or n=2) (R
S) is isomorphic to a graph of (0
1)polyhedra which was introduced by D J Naddef and W R Potleyblank. However
when m>2 and n>1 this fact is not true in the general. Furthermore when n=2 ( orm=2) the interchange graph of (R
S) is Hamilton connected and edge Pancyclic except a few special cases.