Fat-wedge filtration and decomposition of polyhedral products

Kouyemon Iriye, Daisuke Kishimoto

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


The polyhedral product constructed from a collection of pairs of cones and their bases and a simplicial complex K is studied by investigating its filtration called the fat-wedge filtration. We give a sufficient condition for decomposing the polyhedral product in terms of the fat-wedge filtration of the real moment-angle complex for K, which is a desuspension of the decomposition of the suspension of the polyhedral product due to Bahri, Bendersky, Cohen, and Gitler. We show that the condition also implies a strong connection with the Golodness of K, and it is satisfied when K is dual sequentially Cohen–Macaulay over Z or dim 2 K -neighborly so that the polyhedral product decomposes. Specializing to the moment-angle complex, we prove that the similar condition on its fat-wedge filtrations is necessary and sufficient for its decomposition.

Original languageEnglish
Pages (from-to)1-51
Number of pages51
JournalKyoto Journal of Mathematics
Issue number1
Publication statusPublished - Apr 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Mathematics


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