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On the local distinguishing chromatic number [PDF]

open access: yesAKCE International Journal of Graphs and Combinatorics, 2019
The distinguishing number of graphs is generalized in two directions by Cheng and Cowen (local distinguishing number) and Collins and Trenk (Distinguishing chromatic number). In this paper, we define and study the local distinguishing chromatic number of
Omid Khormali
doaj   +4 more sources

Distinguishing Chromatic Number of Random Cayley graphs [PDF]

open access: yesDiscrete Mathematics, 2016
The \textit{Distinguishing Chromatic Number} of a graph $G$, denoted $\chi_D(G)$, was first defined in \cite{collins} as the minimum number of colors needed to properly color $G$ such that no non-trivial automorphism $\phi$ of the graph $G$ fixes each ...
Balachandran, Niranjan   +1 more
core   +4 more sources

On the distinguishing chromatic number of the Kronecker products of graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2023
In this paper, we investigate the distinguishing chromatic number of Kronecker product of paths, cycles, star graphs, symmetric trees, almost symmetric trees, and bisymmetric trees.
Zinat Rastgar   +2 more
doaj   +3 more sources

Neighbor Sum Distinguishing Total Chromatic Number of Planar Graphs without 5-Cycles

open access: yesDiscussiones Mathematicae Graph Theory, 2020
For a given graph G = (V (G), E(G)), a proper total coloring ϕ: V (G) ∪ E(G) → {1, 2, . . . , k} is neighbor sum distinguishing if f(u) ≠ f(v) for each edge uv ∈ E(G), where f(v) = Σuv∈E(G) ϕ(uv)+ϕ(v), v ∈ V (G). The smallest integer k in such a coloring
Zhao Xue, Xu Chang-Qing
doaj   +3 more sources

The Distinguishing Chromatic Number [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2006
In this paper we define and study the distinguishing chromatic number, $\chi_D(G)$, of a graph $G$, building on the work of Albertson and Collins who studied the distinguishing number. We find $\chi_D(G)$ for various families of graphs and characterize those graphs with $\chi_D(G)$ $ = |V(G)|$, and those trees with the maximum chromatic distingushing ...
Collins, Karen L., Trenk, Ann N.
openaire   +3 more sources

Equitable distinguishing chromatic number

open access: yesIndian Journal of Pure and Applied Mathematics, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tayyebeh Amouzegar, Kazem Khashyarmanesh
openaire   +2 more sources

Group twin coloring of graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2018
For a given graph $G$, the least integer $k\geq 2$ such that for every Abelian group $\mathcal{G}$ of order $k$ there exists a proper edge labeling $f:E(G)\rightarrow \mathcal{G}$ so that $\sum_{x\in N(u)}f(xu)\neq \sum_{x\in N(v)}f(xv)$ for each edge ...
Sylwia Cichacz, Jakub Przybyło
doaj   +3 more sources

On the graphs with distinguishing number equal list distinguishing number [PDF]

open access: yesJournal of Mahani Mathematical Research, 2023
The distinguishing number $D(G)$ of a graph $G$ is the least integer $d$ such that $G$ has an vertex labeling with $d$ labels that is preserved only by the trivial automorphism.
Saeid Alikhani, Samaneh Soltani
doaj   +1 more source

AVD proper edge-coloring of some families of graphs

open access: yesInternational Journal of Mathematics for Industry, 2021
Adjacent vertex-distinguishing proper edge-coloring is the minimum number of colors required for the proper edge-coloring of [Formula: see text] in which no two adjacent vertices are incident to edges colored with the same set of colors.
J. Naveen
doaj   +1 more source

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