Proof of Gessel's $\gamma$-Positivity Conjecture Zhicong Lin DOI: https://doi.org/10.37236/5797 Keywords: Descents, Inverse descents, Eulerian polynomials, $\gamma$-Positivity Abstract We prove a conjecture of Gessel, which asserts that the joint distribution of descents and inverse descents on permutations has a fascinating refined $\gamma$-positivity. PDF Published 2016-07-22 Issue Volume 23, Issue 3 (2016) Article Number P3.15
