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- Centre National de la Recherche ScientifiqueFR17 papers
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Showing 2009 · math.COShow all
3 papers · 2 filters
math.CO2009
A bound on the scrambling index of a primitive matrix using Boolean rank
Mahmud Akelbek, Sandra Fital, Jian Shen
The scrambling index of an primitive matrix is the smallest positive integer such that , where denotes the transpose of and denote…
math.CO2009★ 2 cited
On the Chudnovsky-Seymour-Sullivan Conjecture on Cycles in Triangle-free Digraphs
Kevin Chen, Sean Karson, Dan Liu +1
For a simple digraph without directed triangles or digons, let be the size of the smallest subset such that has no directed cycles, and…
math.CO2009
The kth Upper Bases of Primitive Non-powerful Signed Digraphs
Yanling Shao, Jian Shen, Yubin Gao
In this paper, we study the kth upper bases of primitive non-powerful signed digraphs. A bound on the kth upper bases of all primitive non-powerful signed digraphs is obtained, and…