diff options
Diffstat (limited to 'mathcomp/solvable/nilpotent.v')
| -rw-r--r-- | mathcomp/solvable/nilpotent.v | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mathcomp/solvable/nilpotent.v b/mathcomp/solvable/nilpotent.v index 06f3152..cf6503a 100644 --- a/mathcomp/solvable/nilpotent.v +++ b/mathcomp/solvable/nilpotent.v @@ -424,7 +424,7 @@ have <-: 'Z(H / Z) * 'Z(K / Z) = 'Z(G / Z). by rewrite -mulHK quotientMl // center_prod ?quotient_cents. have ZquoZ (B A : {group gT}): B \subset 'C(A) -> 'Z_n(A) * 'Z_n(B) = Z -> 'Z(A / Z) = 'Z_n.+1(A) / Z. -- move=> cAB {defZ}defZ; have cAZnB: 'Z_n(B) \subset 'C(A) := gFsub_trans _ cAB. +- move=> cAB {}defZ; have cAZnB: 'Z_n(B) \subset 'C(A) := gFsub_trans _ cAB. have /second_isom[/=]: A \subset 'N(Z). by rewrite -defZ normsM ?gFnorm ?cents_norm // centsC. suffices ->: Z :&: A = 'Z_n(A). |