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Neighbor sum distinguishing list total coloring of IC-planar graphs without 5-cycles

Donghan Zhang — 2022

Czechoslovak Mathematical Journal

Let G = ( V ( G ) , E ( G ) ) be a simple graph and E G ( v ) denote the set of edges incident with a vertex v . A neighbor sum distinguishing (NSD) total coloring φ of G is a proper total coloring of G such that z E G ( u ) { u } φ ( z ) z E G ( v ) { v } φ ( z ) for each edge u v E ( G ) . Pilśniak and Woźniak asserted in 2015 that each graph with maximum degree Δ admits an NSD total ( Δ + 3 ) -coloring. We prove that the list version of this conjecture holds for any IC-planar graph with Δ 11 but without 5 -cycles by applying the Combinatorial Nullstellensatz.

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