fact: Variables (A : finType) (n : nat) (P : R.-fdist 'rV[A]_n) (s : {set 'I_n}).
imports: mathcomp(all_ssreflect ssralg fingroup perm matrix) mathcomp(all_algebra vector reals normedtype) mathcomp(mathcomp_extra boolp) mathcomp(Rstruct) ssrR logb realType_ext ssr_ext ssralg_ext bigop_ext