https://doi.org/10.4007/annals.2019.190.3.3 https://www.jstor.org/stable/10.4007/annals.2019.190.3.3 Let (σ1,...,σd) be a ...

Let the random variable $Z_{n,k}$ denote the number of increasing subsequences of length k in a random permutation from $S_{n} ...