2 problems

Let $C_n(q)$ be the $q$-Catalan polynomial defined by … Xin and Zhong's conjecture. For $n\ge 1$, the polynomial $(1+q)C_n(q)$ is unimodal. This is a conjecture about the unimodali…

Let $C_n(q)$ be the $q$-Catalan polynomial defined by … Chen, Wang and Wang's conjecture. For $n\ge 16$, the $q$-Catalan polynomial $C_n(q)$ is unimodal. This conjecture concerns t…