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Diffstat (limited to '')
| -rw-r--r-- | hott/Nat.thy | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hott/Nat.thy b/hott/Nat.thy index 22c1860..50b7996 100644 --- a/hott/Nat.thy +++ b/hott/Nat.thy @@ -151,7 +151,7 @@ Lemma (derive) zero_mul: proof reduce have "0 + 0 * n = 0 + 0 " by (eq ih) refl also have ".. = 0" by reduce refl - finally show "0 + 0 * n = 0" by this + finally show "{}" by this qed done |