proposition: Lemma karatsubaE (p q : {poly R}) : karatsuba (N:=nat) p q = p * q.
proof: Proof. exact: karatsuba_recE. Qed.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat div seq ssralg) mathcomp(path choice fintype tuple finset bigop poly polydiv) CoqEAL(hrel param refinements poly_op)