Title: Sign variations and descents
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In this talk we consider a poset structure on projective sign vectors. We show that the order complex of this poset is partitionable and give an interpretation of the h-vector using type B descents of the type D Coxeter group.
Based on joint work with Nantel Bergeron and John Machacek, and is a continuation of the work by John Machacek. arXiv preprint: 2008.03794