proposition: Lemma inl_dl_S_lambda_prop lam (Hl: inc lam I2) : inductive_system_on (inl_dl_S_lambda Hl) (inl_dl_Elam_fam lam) I1 r1 (inl_dl_glam_fam lam).
proof: Proof. by []. Qed.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat)