exception AlreadySimplified
exception WhatAndWithWhatDoNotHaveTheSameLength;;
-val alpha_equivalence: Cic.term -> Cic.term -> bool
-
(* Replaces "textually" in "where" every term in "what" with the corresponding
term in "with_what". The terms in "what" ARE NOT lifted when binders are
crossed. The terms in "with_what" ARE NOT lifted when binders are crossed.