fix(library/data/equiv): minor adjustment

2015-10-12 16:56:11 -07:00 · 2015-10-12 16:56:11 -07:00 · 0eec984485
commit 0eec984485
parent d1e111fd6c
1 changed files with 1 additions and 1 deletions
--- a/library/data/equiv.lean
+++ b/library/data/equiv.lean
@ -277,7 +277,7 @@ mk (λ s, match s with inl n := 2*n | inr n := 2*n+1 end)
              rewrite [if_neg h], esimp,
              cases n,
                {exact absurd even_zero h},
-                {rewrite [-add_one, add_sub_cancel,
+                {rewrite [-(add_one a), add_sub_cancel,
                          mul_div_cancel' (dvd_of_even (even_of_odd_succ (odd_of_not_even h)))]}
            end))