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- W2801285844 abstract "An edge labeling of a connected graph $G = (V, E)$ is said to be local antimagic if it is a bijection $f:E to{1,ldots ,|E|}$ such that for any pair of adjacent vertices $x$ and $y$, $f^+(x)not= f^+(y)$, where the induced vertex label $f^+(x)= sum f(e)$, with $e$ ranging over all the edges incident to $x$. The local antimagic chromatic number of $G$, denoted by $chi_{la}(G)$, is the minimum number of distinct induced vertex labels over all local antimagic labelings of $G$. In this paper, we give counterexamples to the lower bound of $chi_{la}(G vee O_2)$ that was obtained in [Local antimagic vertex coloring of a graph, Graphs and Combin., 33 : 275 - 285 (2017)]. A sharp lower bound of $chi_{la}(Gvee O_n)$ and sufficient conditions for the given lower bound to be attained are obtained. Moreover, we settled Theorem 2.15 and solved Problem 3.3 in the affirmative. We also completely determined the local antimagic chromatic number of complete bipartite graphs." @default.
- W2801285844 created "2018-05-17" @default.
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- W2801285844 date "2018-05-08" @default.
- W2801285844 modified "2023-09-27" @default.
- W2801285844 title "Affirmative Solutions On Local Antimagic Chromatic Number" @default.
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