fact: Definition Prob_invp (p : {prob R}) := Prob.mk (prob_invp_subproof p).
imports: mathcomp(all_ssreflect) mathcomp(all_algebra vector reals normedtype) mathcomp(mathcomp_extra boolp) mathcomp(Rstruct) ssrR realType_ext Reals Lra mathcomp(lra)