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Doost Ali Mojdeh

Doost Ali Mojdeh

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId:
Faculty: Faculty of Mathematical Sciences
Address: Department of Mathematics, University of Mazandaran, Babolsar, Iran
Phone: 011-35302448

Research

Title
On the inverse signed total domination num- ber in graphs,
Type
JournalPaper
Keywords
inverse signed total dominating function, inverse signed total domination number, k-tuple total domination number
Year
2017
Journal Opuscula Mathematica
DOI
Researchers Doost Ali Mojdeh ، Babak Samadi

Abstract

In this paper, we study the inverse signed total domination number in graphs and present new sharp lower and upper bounds on this parameter. For example by making use of the classic theorem of Turán (1941), we present a sharp upper bound on Kr+1-free graphs for r  2. Also, we bound this parameter for a tree from below in terms of its order and the number of leaves and characterize all trees attaining this bound.