fact: Definition nelstructondirprod {X Y : UU} {n m : nat} (sx : nelstruct n X) (sy : nelstruct m Y) : nelstruct (n * m) (X × Y) := (weqdirprodf sx sy ∘ invweq (weqfromprodofstn n m))%weq.
imports: UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.DecidablePropositions UniMath.MoreFoundations.NegativePropositions UniMath.Combinatorics.StandardFiniteSets UniMath.MoreFoundations.Subtypes