نتایج جستجو برای: chromatic number

تعداد نتایج: 1174754  

Journal: :Theory of Computing Systems 2017

Journal: :Electronic Journal of Combinatorics 2021

A signed graph is a pair $(G, \sigma)$, where $G$ (loops and multi edges allowed) $\sigma: E(G) \to \{+, -\}$ signature which assigns to each edge of sign. Various notions coloring graphs have been studied. In this paper, we extend circular graphs. Given \sigma)$ with no positive loop, $r$-coloring an assignment $\psi$ points circle circumference $r$ the vertices such that for every $e=uv$ $G$,...

Journal: :European Journal of Combinatorics 2019

Journal: :Journal of Combinatorial Theory, Series A 2018

Journal: :Discrete Mathematics 2002

Journal: :Electronic Notes in Discrete Mathematics 2016

Journal: :Discrete Applied Mathematics 2012

Journal: :Discrete Applied Mathematics 2013

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