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Shellability conjecture for intervals in the classical permutation pattern poset
Let $[sigma,pi]$ be an interval of the classical permutation pattern poset. A subinterval is a zero split subinterval if it has the zero-split property described for this poset. Sh…
Conjectureopenpermutation-pattern-posets poset-topology shellabilityarXiv posted 2 days ago

Shellability conjecture for intervals in the classical permutation pattern poset