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-rw-r--r--mathcomp/ssreflect/fintype.v3
1 files changed, 3 insertions, 0 deletions
diff --git a/mathcomp/ssreflect/fintype.v b/mathcomp/ssreflect/fintype.v
index 3472a1d..f4f34a4 100644
--- a/mathcomp/ssreflect/fintype.v
+++ b/mathcomp/ssreflect/fintype.v
@@ -2220,6 +2220,9 @@ Arguments sub_ord {n'}.
Arguments sub_ordK {n'}.
Arguments inord_val {n'}.
+Lemma ord1 : all_equal_to (ord0 : 'I_1).
+Proof. by case=> [[] // ?]; apply: val_inj. Qed.
+
(* Product of two fintypes which is a fintype *)
Section ProdFinType.