fact: Definition fin_trivIset_closed := forall I (D : set I) (F : I -> set T), finite_set D -> trivIset D F -> (forall i, D i -> G (F i)) -> G (\bigcup_(k in D) F k).
imports: mathcomp(all_ssreflect all_algebra finmap) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(cardinality fsbigop ) reals ereal signed topology normedtype sequences esum numfun HB(structures)