changeset 64240 | eabf80376aab |
parent 63633 | 2accfb71e33b |
child 64272 | f76b6dda2e56 |
--- a/src/HOL/Number_Theory/Gauss.thy Sun Oct 16 09:31:03 2016 +0200 +++ b/src/HOL/Number_Theory/Gauss.thy Sun Oct 16 09:31:04 2016 +0200 @@ -52,7 +52,7 @@ qed lemma p_eq2: "int p = (2 * ((int p - 1) div 2)) + 1" - using odd_p p_ge_2 div_mult_self1_is_id [of 2 "p - 1"] + using odd_p p_ge_2 nonzero_mult_div_cancel_left [of 2 "p - 1"] by simp lemma p_odd_int: obtains z::int where "int p = 2*z+1" "0<z"