Restricted connectivity of total digraph

Author:

Liu Zhenhua1,Zhang Zhao2ORCID

Affiliation:

1. Shihezi No. 1 Middle School, Shihezi, Xinjiang 832000, P. R. China

2. College of Mathematics Physics and Information Engineering, Zhejiang Normal University, Jinhua, Zhejiang 321004, P. R. China

Abstract

For a strongly connected digraph [Formula: see text], an arc-cut [Formula: see text] is a [Formula: see text]-restricted arc-cut of [Formula: see text] if [Formula: see text] has at least two strong components of order at least [Formula: see text]. The [Formula: see text]-restricted arc-connectivity [Formula: see text] is the minimum cardinality of all [Formula: see text]-restricted arc-cuts. The [Formula: see text]-restricted vertex-connectivity [Formula: see text] can be defined similarly. In this paper, we provide upper and lower bounds for [Formula: see text] and [Formula: see text] for the total digraph [Formula: see text] of [Formula: see text].

Funder

National Natural Science Foundation of China

Publisher

World Scientific Pub Co Pte Lt

Subject

Discrete Mathematics and Combinatorics

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