On the sum of the total domination numbers of a digraph and its converse

Hao, GL; Qian, JG; Xie, ZH

Hao, GL (reprint author), East China Univ Technol, Coll Sci, Nanchang 330013, Jiangxi, Peoples R China.

QUAESTIONES MATHEMATICAE, 2019; 42 (1): 47

Abstract

A vertex subset S of a digraph D is called a dominating set of D if every vertex not in S has an in-neighbor in S. A dominating set S of D is called a......

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