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Showing 2019 · math.COShow all
2 papers · 2 filters
math.CO2019
The sandpile group of a polygon flower
Haiyan Chen, Bojan Mohar
Let be a cycle of length , and let be polygon chains. A polygon flower is a graph obtained by identifying the th edge of…
math.CO2019★ 1 cited
Vertex arboricity of cographs
Sebastián González Hermosillo de la Maza, Pavol Hell, César Hernández Cruz +2
Arboricity is a graph parameter akin to chromatic number, in that it seeks to partition the vertices into the smallest number of sparse subgraphs. Where for the chromatic number we…