diff options
Diffstat (limited to 'mathcomp/fingroup/automorphism.v')
| -rw-r--r-- | mathcomp/fingroup/automorphism.v | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mathcomp/fingroup/automorphism.v b/mathcomp/fingroup/automorphism.v index b9ed8e1..a2cda05 100644 --- a/mathcomp/fingroup/automorphism.v +++ b/mathcomp/fingroup/automorphism.v @@ -432,7 +432,7 @@ Lemma lone_subgroup_char G H : H \char G. Proof. move=> sHG Huniq; apply/charP; split=> // f injf Gf; apply/eqP. -have{injf} injf: {in H &, injective f}. +have{} injf: {in H &, injective f}. by move/injmP: injf; apply: sub_in2; apply/subsetP. have fH: f @* H = f @: H by rewrite /morphim (setIidPr sHG). rewrite eqEcard {2}fH card_in_imset ?{}Huniq //=. |