Common use of Maps Clause in Contracts

Maps. ‌ We usually remove domIff from the simpset and clasets due to annoying behavior. Some- times the lemmas below are more well-behaved than domIff. Usually to be used as ”dest: dom lemmas”. However, adding them as permanent dest rules slows down proofs too much, so we refrain from doing this. lemma map-definedness:

Maps. ‌ We usually remove domIff from the simpset and clasets due to annoying behavior. Some- times the lemmas below are more well-behaved than domIff. Usually to be used as ”"dest: dom lemmas”dom_lemmas". However, adding them as permanent dest rules slows down proofs too much, so we refrain from doing this. lemma map-definedness: