diff options
| author | Georges Gonthier | 2019-05-08 09:43:34 +0200 |
|---|---|---|
| committer | Georges Gonthier | 2019-05-17 09:04:50 +0200 |
| commit | 5d7bd2ea2a0a28fb275da8ba2e2c0dc5a33d1034 (patch) | |
| tree | f193a80ae41a42e5f877a932b136d37f9d598c10 /mathcomp/solvable/extremal.v | |
| parent | 51b9988f608625c60184dbe90133d64cdaa2a1f9 (diff) | |
refactor `seq` permutation theory
- Change the naming of permutation lemmas so they conform to a
consistent policy: `perm_eq` lemmas have a `perm_` (_not_ `perm_eq`)
prefix, or sometimes a `_perm` suffix for lemmas that _prove_ `perm_eq`
using a property when there is also a lemma _using_ `perm_eq` for the
same property. Lemmas that do not concern `perm_eq` do _not_ have
`perm` in their name.
- Change the definition of `permutations` for a time- and space-
back-to-front generation algorithm.
- Add frequency tally operations `tally`, `incr_tally`, `wf_tally` and
`tally_seq`, used by the improved `permutation` algorithm.
- add deprecated aliases for renamed lemmas
Diffstat (limited to 'mathcomp/solvable/extremal.v')
| -rw-r--r-- | mathcomp/solvable/extremal.v | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mathcomp/solvable/extremal.v b/mathcomp/solvable/extremal.v index 65c186a..d236575 100644 --- a/mathcomp/solvable/extremal.v +++ b/mathcomp/solvable/extremal.v @@ -2322,7 +2322,7 @@ have{defZN2} strZN2: \big[dprod/1]_(z <- [:: xpn3; y]) <[z]> = 'Z('Ohm_2(N)). by rewrite unlock /= dprodg1. rewrite -size_abelian_type ?center_abelian //. have pZN2: p.-group 'Z('Ohm_2(N)) by rewrite (pgroupS _ pN) // subIset ?Ohm_sub. -rewrite -(perm_eq_size (perm_eq_abelian_type pZN2 strZN2 _)) //= !inE. +rewrite (perm_size (abelian_type_pgroup pZN2 strZN2 _)) //= !inE. rewrite !(eq_sym 1) -!order_eq1 oy orderE oX2. by rewrite (eqn_exp2l 2 0) // (eqn_exp2l 1 0). Qed. |