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Prescribed Turán sign patterns for inverse Kazhdan-Lusztig polynomials of matroids
Gao and Xie conjectured that the coefficients of the ordinary, unnormalized inverse Kazhdan-Lusztig polynomial of every matroid are log-concave with no internal zeros. We give counterexamples and prove locality and composition formulas for deletions of projective charts. For every finite field and e
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