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| author | Erik Martin-Dorel | 2019-02-27 17:31:35 +0100 |
|---|---|---|
| committer | Erik Martin-Dorel | 2019-03-20 12:54:26 +0100 |
| commit | c07f1f8d89dd1f975e06e8c45df2c7a4e6ca7fc3 (patch) | |
| tree | 73c109057bf3f18127be887fcc1b2e0ba82ff3e2 /mathcomp/ssreflect/tuple.v | |
| parent | 4c8455594c5adff08761037a5919c058d0d502ba (diff) | |
Add extra eta lemmas for the under tactic
Related: coq/coq#9651
Diffstat (limited to 'mathcomp/ssreflect/tuple.v')
| -rw-r--r-- | mathcomp/ssreflect/tuple.v | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/mathcomp/ssreflect/tuple.v b/mathcomp/ssreflect/tuple.v index 8f81155..c0ba403 100644 --- a/mathcomp/ssreflect/tuple.v +++ b/mathcomp/ssreflect/tuple.v @@ -411,10 +411,14 @@ Proof. by rewrite -tnth_nth tnth_mktuple. Qed. End MkTuple. +Lemma eq_mktuple T' (f1 f2 : 'I_n -> T') : + f1 =1 f2 -> mktuple f1 = mktuple f2. +Proof. by move=> eq_f; apply eq_from_tnth=> i; rewrite !tnth_map eq_f. Qed. + End UseFinTuple. Notation "[ 'tuple' F | i < n ]" := (mktuple (fun i : 'I_n => F)) (at level 0, i at level 0, format "[ '[hv' 'tuple' F '/' | i < n ] ']'") : form_scope. - +Arguments eq_mktuple {n T'} [f1] f2 eq_f12. |