fact: Hypothesis Hsize : ((T2_size (gcons a1 b1 n1 c1) + T2_size (gcons a2 b2 n2 c2)) = S s)%nat.
imports: Coq(Arith List Lia Compare_dec Relations Wellfounded RelationClasses) hydras(Epsilon0) hydras(More_Arith Restriction) hydras(ON_Generic) hydras(rpo.term rpo.rpo) hydras(T2) hydras(Compat815)