changeset 56409 | 36489d77c484 |
parent 55974 | c835a9379026 |
child 56479 | 91958d4b30f7 |
--- a/src/HOL/Rat.thy Fri Apr 04 16:43:47 2014 +0200 +++ b/src/HOL/Rat.thy Thu Apr 03 23:51:52 2014 +0100 @@ -665,7 +665,7 @@ by transfer (simp add: add_frac_eq) lemma of_rat_minus: "of_rat (- a) = - of_rat a" - by transfer simp + by transfer (simp add: divide_minus_left) lemma of_rat_neg_one [simp]: "of_rat (- 1) = - 1"