A Combinatorial Interpretation of the Co
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Federico Incitti
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Article
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2002
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Elsevier Science
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English
β 173 KB
Conti et al. defined a two-variable polynomial associated with any rooted tree. In this paper we give an explicit combinatorial interpretation of the coefficients of this polynomial. In order to do this we introduce a special class of subtrees which seem to have never been considered before in the l