diff options
Diffstat (limited to 'Projections.thy')
| -rw-r--r-- | Projections.thy | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Projections.thy b/Projections.thy index 8ff6b30..1473e08 100644 --- a/Projections.thy +++ b/Projections.thy @@ -21,7 +21,7 @@ declare fst_type [intro] lemma fst_cmp: assumes "A: U i" and "B: A \<leadsto> U i" and "a: A" and "b: B a" shows "fst A <a, b> \<equiv> a" -unfolding fst_def by compute (derive lems: assms) +unfolding fst_def by (subst comp) (derive lems: assms) declare fst_cmp [comp] |