fact: Definition bv_concat n m (bv1:bitvector n) (bv2: bitvector m) : bitvector (n + m) := @MkBitvector (n + m) (M.bv_concat bv1 bv2) (M.bv_concat_size (wf bv1) (wf bv2)).
imports: List Bool NArith Psatz Int63 Nnat ZArith Misc ProofIrrelevance