fact: CoInductive letter_spec : letter -> bool -> bool -> bool -> bool -> Prop := | letter_spec0 : letter_spec (Bit 0) true false false false | letter_spec1 : letter_spec (Bit 1) false true false false | letter_specstar : letter_spec Blank false false true false | letter_specblank : letter_spec Star false false false true.
imports: mathcomp(all_ssreflect ssralg fingroup finalg perm zmodp) mathcomp(matrix) ssr_ext ssralg_ext num_occ f2 ssrR hamming tanner linearcode