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Subdivision of complexes of k-Trees

Emanuele Delucchi
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Abstract

Consider the poset of partitions of {1,...(n-1)k+1} with block sizes congruent to 1 modulo k. We prove that its order complex is a subdivision of the complex of k-trees, thereby answering a question posed by Feichtner. The result is obtained by an ad-hoc generalization of concepts from the theory of nested set complexes to non-lattices.

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Emanuele Delucchi. 2005-09-16. Subdivision of complexes of k-Trees. https://arxiv.org/abs/math/0509378

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