diff options
Diffstat (limited to 'theories/Wellfounded')
| -rw-r--r-- | theories/Wellfounded/Lexicographic_Exponentiation.v | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/theories/Wellfounded/Lexicographic_Exponentiation.v b/theories/Wellfounded/Lexicographic_Exponentiation.v index fe4fd179e..92d60c2d3 100644 --- a/theories/Wellfounded/Lexicographic_Exponentiation.v +++ b/theories/Wellfounded/Lexicographic_Exponentiation.v @@ -95,8 +95,7 @@ Section Wf_Lexicographic_Exponentiation. intros. - inversion H. assert ([b; a] = ([] ++ [b]) ++ [a]) by auto with sets. - destruct (app_inj_tail (l ++ [y]) ([] ++ [b]) _ _ H0) as (H6, <-). - apply app_inj_tail in H6 as (?, <-). + destruct (app_inj_tail (l ++ [y]) ([] ++ [b]) _ _ H0) as ((?, <-)/app_inj_tail, <-). inversion H1; subst; [ apply rt_step; assumption | apply rt_refl ]. - inversion H0. + apply app_cons_not_nil in H3 as (). |