Remarks and open problems on the minimum permanent of acyclic doubly stochastic matrices

被引:1
作者
da Fonseca, C. M. [1 ]
机构
[1] Univ Coimbra, Dept Math, P-3001454 Coimbra, Portugal
关键词
permanent; doubly stochastic matrices; Birkhoff polytope; trees; second largest eigenvalue; cohesive (0,1)-matrix; barycentric (0,1)-matrix; fastest mixing Markov chain; MIXING MARKOV-CHAIN; POLYTOPE; FACES; CONJECTURE; IDENTITY;
D O I
10.1080/03081087.2012.675332
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We formulate several open problems and conjectures involving acyclic doubly stochastic matrices with minimum permanent and the minimum second largest eigenvalue. New characterizations and illustrative examples of these permanental minimizing matrices are provided in this article. In addition, we show that the adjacency matrix of any tree, with more than 2 vertices, plus the identity matrix is not cohesive.
引用
收藏
页码:281 / 293
页数:13
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