Palindromic Poincaré polynomials in Type B
Abstract
We completely describe the set of all palindromic Poincaré polynomials in type Bn. Additionally, we show that all lower Bruhat intervals in type An occur in type Bn. As a consequence, all Poincaré polynomials Pw(q) and all Kazhdan--Lusztig polynomials Px,y(q) of type An occur in type Bn.
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