Proper caterpillars are distinguished by their chromatic symmetric function

Discrete Mathematics（2014）

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摘要

We show that the symmetric function generalization of the chromatic polynomial, or equivalently, the U-polynomial, distinguishes among a large class of caterpillar trees that we call proper, thus improving previous results by Martin, Morin and Wagner.

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关键词

chromatic symmetric function,large class,chromatic polynomial,caterpillar tree,proper caterpillar,symmetric function generalization,previous result,u

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