fact: Definition finpred_of (T : eqType) (pT : predType T) (p : pT) (fp : finpred pT) & phantom pT fp : finpred pT := fp.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrnat eqtype ssrfun seq) mathcomp(choice path finset finfun fintype bigop)