diff options
| author | Kazuhiko Sakaguchi | 2019-08-30 11:30:21 +0200 |
|---|---|---|
| committer | Kazuhiko Sakaguchi | 2019-10-30 23:19:33 +0100 |
| commit | d60c67b8f33f55e11ca159246d2a447102f10f20 (patch) | |
| tree | 74fecfdcc5b2429e5cf199f9daa48a56540e2359 /mathcomp/solvable/extremal.v | |
| parent | c5bd1d4d29021688db59495a8b60c84f5dea6b77 (diff) | |
Change the order of arguments in `ltngtP`
from
`ltngtP m n : compare_nat m n (m <= n) (n <= m) (m < n) (n < m) (n == m) (m == n)`
to
`ltngtP m n : compare_nat m n (n == m) (m == n) (n <= m) (m <= n) (n < m) (m < n)`,
to make it tries to match subterms with `m < n` first, `m <= n`, then `m == n`.
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 d236575..be885b1 100644 --- a/mathcomp/solvable/extremal.v +++ b/mathcomp/solvable/extremal.v @@ -1831,7 +1831,7 @@ case/pred2P: Z_xxy => xy; last first. have n_gt3: n > 3. case: ltngtP notXy => // [|n3]; first by rewrite ltnNge n_gt2. rewrite -scXG inE Gy defX cent_cycle; case/cent1P; red. - by rewrite (conjgC x) xy /r p2 n3. + by rewrite (conjgC x) xy /r p2 -n3. exists n => //; rewrite isogEcard card_semidihedral // oG p2 leqnn andbT. rewrite Grp_semidihedral //; apply/existsP=> /=. case/pred2P: Zy2 => y2; [exists (x, y) | exists (x, x * y)]. |