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Grp_modular_group: 'Mod_(p ^ n) \isog Grp (x : y : x ^+ q, y ^+ p, x ^ y = x ^+ r.+1). Proof. rewrite /modular_gtype def_p def_q def_r; apply: Extremal.Grp => //. set B := <[_]>; have Bb: Zp1 \in B by apply: cycle_id. have oB: #|B| = q by rewrite -orderE order_Zp1 Zp_cast. have cycB: cyclic B by rewrite cycle_cyclic....
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
Grp_modular_group
modular_group_generatorsgT (xy : gT * gT) := let: (x, y) := xy in #[y] = p /\ x ^ y = x ^+ r.+1.
Definition
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
modular_group_generators
generators_modular_groupgT (G : {group gT}) : G \isog 'Mod_m -> exists2 xy, extremal_generators G p n xy & modular_group_generators xy. Proof. case/(isoGrpP _ Grp_modular_group); rewrite card_modular_group // -/m => oG. case/existsP=> -[x y] /= /eqP[defG xq yp xy]. rewrite norm_joinEr ?norms_cycle ?xy ?mem_cycle ...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
generators_modular_group
modular_group_structuregT (G : {group gT}) x y : extremal_generators G p n (x, y) -> G \isog 'Mod_m -> modular_group_generators (x, y) -> let X := <[x]> in [/\ [/\ X ><| <[y]> = G, ~~ abelian G & {in X, forall z j, z ^ (y ^+ j) = z ^+ (j * r).+1}], [/\ 'Z(G) = <[x ^+ p]>, 'Phi(G) = 'Z(G) & #|'...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
modular_group_structure
card_ext_dihedral: #|ED| = (p./2 * m)%N. Proof. by rewrite Extremal.card // /m -mul2n -divn2 mulnA divnK. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
card_ext_dihedral
Grp_ext_dihedral: ED \isog Grp (x : y : x ^+ q, y ^+ p, x ^ y = x^-1). Proof. suffices isoED: ED \isog Grp (x : y : x ^+ q, y ^+ p, x ^ y = x ^+ q.-1). move=> gT G; rewrite isoED. apply: eq_existsb => [[x y]] /=; rewrite !xpair_eqE. congr (_ && _); apply: andb_id2l; move/eqP=> xq1; congr (_ && (_ == _)). by app...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
Grp_ext_dihedral
card_dihedral: #|'D_m| = m. Proof. by rewrite /('D_m)%type def_q card_ext_dihedral ?mul1n. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
card_dihedral
Grp_dihedral: 'D_m \isog Grp (x : y : x ^+ q, y ^+ 2, x ^ y = x^-1). Proof. by rewrite /('D_m)%type def_q; apply: Grp_ext_dihedral. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
Grp_dihedral
Grp'_dihedral: 'D_m \isog Grp (x : y : x ^+ 2, y ^+ 2, (x * y) ^+ q). Proof. move=> gT G; rewrite Grp_dihedral; apply/existsP/existsP=> [] [[x y]] /=. case/eqP=> <- xq1 y2 xy; exists (x * y, y); rewrite !xpair_eqE /= eqEsubset. rewrite !join_subG !joing_subr !cycle_subG -{3}(mulgK y x) /=. rewrite 2?groupM ?group...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
Grp'_dihedral
involutions_gen_dihedralgT (x y : gT) : let G := <<[set x; y]>> in #[x] = 2 -> #[y] = 2 -> x != y -> G \isog 'D_#|G|. Proof. move=> G ox oy ne_x_y; pose q := #[x * y]. have q_gt1: q > 1 by rewrite order_gt1 -eq_invg_mul invg_expg ox. have homG: G \homg 'D_q.*2. rewrite Grp'_dihedral //; apply/existsP; exists (x...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
involutions_gen_dihedral
Grp_2dihedraln : n > 1 -> 'D_(2 ^ n) \isog Grp (x : y : x ^+ (2 ^ n.-1), y ^+ 2, x ^ y = x^-1). Proof. move=> n_gt1; rewrite -(ltn_predK n_gt1) expnS mul2n /=. by apply: Grp_dihedral; rewrite (ltn_exp2l 0) // -(subnKC n_gt1). Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
Grp_2dihedral
card_2dihedraln : n > 1 -> #|'D_(2 ^ n)| = (2 ^ n)%N. Proof. move=> n_gt1; rewrite -(ltn_predK n_gt1) expnS mul2n /= card_dihedral //. by rewrite (ltn_exp2l 0) // -(subnKC n_gt1). Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
card_2dihedral
card_semidihedraln : n > 3 -> #|'SD_(2 ^ n)| = (2 ^ n)%N. Proof. move=> n_gt3. rewrite /('SD__)%type -(subnKC (ltnW (ltnW n_gt3))) pdiv_pfactor //. by rewrite // !expnS !mulKn -?expnS ?Extremal.card //= (ltn_exp2l 0). Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
card_semidihedral
Grp_semidihedraln : n > 3 -> 'SD_(2 ^ n) \isog Grp (x : y : x ^+ (2 ^ n.-1), y ^+ 2, x ^ y = x ^+ (2 ^ n.-2).-1). Proof. move=> n_gt3. rewrite /('SD__)%type -(subnKC (ltnW (ltnW n_gt3))) pdiv_pfactor //. rewrite !expnS !mulKn // -!expnS /=; set q := (2 ^ _)%N. have q_gt1: q > 1 by rewrite (ltn_exp2l 0). apply: E...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
Grp_semidihedral
card_quaternion: #|'Q_m| = m. Proof. by case defQ. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
card_quaternion
Grp_quaternion: GrpQ. Proof. by case defQ. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
Grp_quaternion
eq_Mod8_D8: 'Mod_8 = 'D_8. Proof. by []. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
eq_Mod8_D8
generators_2dihedral: n > 1 -> G \isog 'D_m -> exists2 xy, extremal_generators G 2 n xy & let: (x, y) := xy in #[y] = 2 /\ x ^ y = x^-1. Proof. move=> n_gt1; have [def2q _ ltqm _] := def2qr n_gt1. case/(isoGrpP _ (Grp_2dihedral n_gt1)); rewrite card_2dihedral // -/ m => oG. case/existsP=> -[x y] /=; re...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
generators_2dihedral
generators_semidihedral: n > 3 -> G \isog 'SD_m -> exists2 xy, extremal_generators G 2 n xy & let: (x, y) := xy in #[y] = 2 /\ x ^ y = x ^+ r.-1. Proof. move=> n_gt3; have [def2q _ ltqm _] := def2qr (ltnW (ltnW n_gt3)). case/(isoGrpP _ (Grp_semidihedral n_gt3)). rewrite card_semidihedral // -/m => oG. ...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
generators_semidihedral
generators_quaternion: n > 2 -> G \isog 'Q_m -> exists2 xy, extremal_generators G 2 n xy & let: (x, y) := xy in [/\ #[y] = 4, y ^+ 2 = x ^+ r & x ^ y = x^-1]. Proof. move=> n_gt2; have [def2q def2r ltqm _] := def2qr (ltnW n_gt2). case/(isoGrpP _ (Grp_quaternion n_gt2)); rewrite card_quaternion // -/m =...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
generators_quaternion
dihedral2_structure: n > 1 -> extremal_generators G 2 n (x, y) -> G \isog 'D_m -> [/\ [/\ X ><| Y = G, {in G :\: X, forall t, #[t] = 2} & {in X & G :\: X, forall z t, z ^ t = z^-1}], [/\ G ^`(1) = <[x ^+ 2]>, 'Phi(G) = G ^`(1), #|G^`(1)| = r & nil_class G = n.-1], 'Ohm_1(G) = G /\ (for...
Theorem
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
dihedral2_structure
quaternion_structure: n > 2 -> extremal_generators G 2 n (x, y) -> G \isog 'Q_m -> [/\ [/\ pprod X Y = G, {in G :\: X, forall t, #[t] = 4} & {in X & G :\: X, forall z t, z ^ t = z^-1}], [/\ G ^`(1) = <[x ^+ 2]>, 'Phi(G) = G ^`(1), #|G^`(1)| = r & nil_class G = n.-1], [/\ 'Z(G) = <[x ^+...
Theorem
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
quaternion_structure
semidihedral_structure: n > 3 -> extremal_generators G 2 n (x, y) -> G \isog 'SD_m -> #[y] = 2 -> [/\ [/\ X ><| Y = G, #[x * y] = 4 & {in X & G :\: X, forall z t, z ^ t = z ^+ r.-1}], [/\ G ^`(1) = <[x ^+ 2]>, 'Phi(G) = G ^`(1), #|G^`(1)| = r & nil_class G = n.-1], [/\ 'Z(G) = <[x ^+ r...
Theorem
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
semidihedral_structure
extremal_group_type:= ModularGroup | Dihedral | SemiDihedral | Quaternion | NotExtremal.
Inductive
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
extremal_group_type
index_extremal_group_typec : nat := match c with | ModularGroup => 0 | Dihedral => 1 | SemiDihedral => 2 | Quaternion => 3 | NotExtremal => 4 end.
Definition
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
index_extremal_group_type
enum_extremal_groups:= [:: ModularGroup; Dihedral; SemiDihedral; Quaternion].
Definition
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
enum_extremal_groups
cancel_index_extremal_groups: cancel index_extremal_group_type (nth NotExtremal enum_extremal_groups). Proof. by case. Qed. Local Notation extgK := cancel_index_extremal_groups. #[export] HB.instance Definition _ := Countable.copy extremal_group_type (can_type extgK).
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
cancel_index_extremal_groups
bound_extremal_groups(c : extremal_group_type) : pickle c < 6. Proof. by case: c. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
bound_extremal_groups
extremal_class(A : {set gT}) := let m := #|A| in let p := pdiv m in let n := logn p m in if (n > 1) && (A \isog 'D_(2 ^ n)) then Dihedral else if (n > 2) && (A \isog 'Q_(2 ^ n)) then Quaternion else if (n > 3) && (A \isog 'SD_(2 ^ n)) then SemiDihedral else if (n > 2) && (A \isog 'Mod_(p ^ n)) then ModularGro...
Definition
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
extremal_class
extremal2A := extremal_class A \in behead enum_extremal_groups.
Definition
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
extremal2
dihedral_classP: extremal_class G = Dihedral <-> (exists2 n, n > 1 & G \isog 'D_(2 ^ n)). Proof. rewrite /extremal_class; split=> [ | [n n_gt1 isoG]]. by move: (logn _ _) => n; do 4?case: ifP => //; case/andP; exists n. rewrite (card_isog isoG) card_2dihedral // -(ltn_predK n_gt1) pdiv_pfactor //. by rewrite pfacto...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
dihedral_classP
quaternion_classP: extremal_class G = Quaternion <-> (exists2 n, n > 2 & G \isog 'Q_(2 ^ n)). Proof. rewrite /extremal_class; split=> [ | [n n_gt2 isoG]]. by move: (logn _ _) => n; do 4?case: ifP => //; case/andP; exists n. rewrite (card_isog isoG) card_quaternion // -(ltn_predK n_gt2) pdiv_pfactor //. rewrite pfac...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
quaternion_classP
semidihedral_classP: extremal_class G = SemiDihedral <-> (exists2 n, n > 3 & G \isog 'SD_(2 ^ n)). Proof. rewrite /extremal_class; split=> [ | [n n_gt3 isoG]]. by move: (logn _ _) => n; do 4?case: ifP => //; case/andP; exists n. rewrite (card_isog isoG) card_semidihedral //. rewrite -(ltn_predK n_gt3) pdiv_pfactor ...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
semidihedral_classP
odd_not_extremal2: odd #|G| -> ~~ extremal2 G. Proof. rewrite /extremal2 /extremal_class; case: logn => // n'. case: andP => [[n_gt1 isoG] | _]. by rewrite (card_isog isoG) card_2dihedral ?oddX. case: andP => [[n_gt2 isoG] | _]. by rewrite (card_isog isoG) card_quaternion ?oddX. case: andP => [[n_gt3 isoG] | _]. ...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
odd_not_extremal2
modular_group_classP: extremal_class G = ModularGroup <-> (exists2 p, prime p & exists2 n, n >= (p == 2) + 3 & G \isog 'Mod_(p ^ n)). Proof. rewrite /extremal_class; split=> [ | [p p_pr [n n_gt23 isoG]]]. move: (pdiv _) => p; set n := logn p _; do 4?case: ifP => //. case/andP=> n_gt2 isoG _ _; rewr...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
modular_group_classP
extremal2_structure(gT : finGroupType) (G : {group gT}) n x y : let cG := extremal_class G in let m := (2 ^ n)%N in let q := (2 ^ n.-1)%N in let r := (2 ^ n.-2)%N in let X := <[x]> in let yG := y ^: G in let xyG := (x * y) ^: G in let My := <<yG>> in let Mxy := <<xyG>> in extremal_generators G 2 n (x, y) -...
Theorem
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
extremal2_structure
maximal_cycle_extremalgT p (G X : {group gT}) : p.-group G -> ~~ abelian G -> cyclic X -> X \subset G -> #|G : X| = p -> (extremal_class G == ModularGroup) || (p == 2) && extremal2 G. Proof. move=> pG not_cGG cycX sXG iXG; rewrite /extremal2; set cG := extremal_class G. have [|p_pr _ _] := pgroup_pdiv pG. by ca...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
maximal_cycle_extremal
cyclic_SCNgT p (G U : {group gT}) : p.-group G -> U \in 'SCN(G) -> ~~ abelian G -> cyclic U -> [/\ p = 2, #|G : U| = 2 & extremal2 G] \/ exists M : {group gT}, [/\ M :=: 'C_G('Mho^1(U)), #|M : U| = p, extremal_class M = ModularGroup, 'Ohm_1(M)%G \in 'E_p^2(G) & 'Ohm_1(M) \char G]. Proof. move=> pG /SC...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
cyclic_SCN
normal_rank1_structuregT p (G : {group gT}) : p.-group G -> (forall X : {group gT}, X <| G -> abelian X -> cyclic X) -> cyclic G \/ [&& p == 2, extremal2 G & (#|G| >= 16) || (G \isog 'Q_8)]. Proof. move=> pG dn_G_1. have [cGG | not_cGG] := boolP (abelian G); first by left; rewrite dn_G_1. have [X maxX]: {X | [max...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
normal_rank1_structure
odd_pgroup_rank1_cyclicgT p (G : {group gT}) : p.-group G -> odd #|G| -> cyclic G = ('r_p(G) <= 1). Proof. move=> pG oddG; rewrite -rank_pgroup //; apply/idP/idP=> [cycG | dimG1]. by rewrite -abelian_rank1_cyclic ?cyclic_abelian. have [X nsXG cXX|//|] := normal_rank1_structure pG; last first. by rewrite (negPf (o...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
odd_pgroup_rank1_cyclic
prime_Ohm1PgT p (G : {group gT}) : p.-group G -> G :!=: 1 -> reflect (#|'Ohm_1(G)| = p) (cyclic G || (p == 2) && (extremal_class G == Quaternion)). Proof. move=> pG ntG; have [p_pr p_dvd_G _] := pgroup_pdiv pG ntG. apply: (iffP idP) => [|oG1p]. case/orP=> [cycG|]; first exact: Ohm1_cyclic_pgroup_prime...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
prime_Ohm1P
symplectic_type_group_structuregT p (G : {group gT}) : p.-group G -> (forall X : {group gT}, X \char G -> abelian X -> cyclic X) -> exists2 E : {group gT}, E :=: 1 \/ extraspecial E & exists R : {group gT}, [/\ cyclic R \/ [/\ p = 2, extremal2 R & #|R| >= 16], E \* R = G & E :&: R = 'Z(E)]. Pr...
Theorem
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq div", "From mathcomp Require Import choice fintype bigop finset prime binomial", "From mathcomp Require Import fingroup morphism perm automorphism presentation", "From mathcomp Require Import quotie...
solvable/extremal.v
symplectic_type_group_structure
fmod_of(gT : finGroupType) (A : {group gT}) (abelA : abelian A) := Fmod x & x \in A. Bind Scope ring_scope with fmod_of.
Inductive
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmod_of
fmvalu := val (f2sub_magma u). #[export] HB.instance Definition _ := [isSub for fmval]. Local Notation valA := (val: fmodA -> gT) (only parsing). #[export] HB.instance Definition _ := [Finite of fmodA by <:].
Definition
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmval
fmodx := sub2f (subg A x).
Definition
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmod
actru x := if x \in 'N(A) then fmod (fmval u ^ x) else u.
Definition
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
actr
fmod_oppu := sub2f u^-1.
Definition
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmod_opp
fmod_addu v := sub2f (u * v). Fact fmod_add0r : left_id (sub2f 1) fmod_add. Proof. by move=> u; apply: val_inj; apply: mul1g. Qed. Fact fmod_addrA : associative fmod_add. Proof. by move=> u v w; apply: val_inj; apply: mulgA. Qed. Fact fmod_addNr : left_inverse (sub2f 1) fmod_opp fmod_add. Proof. by move=> u; apply: val...
Definition
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmod_add
Definition_ := [finGroupMixin of fmodA for +%R].
HB.instance
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
Definition
fmodPu : val u \in A. Proof. exact: valP. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmodP
fmod_inj: injective fmval. Proof. exact: val_inj. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmod_inj
congr_fmodu v : u = v -> fmval u = fmval v. Proof. exact: congr1. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
congr_fmod
fmvalA: {morph valA : x y / x + y >-> (x * y)%g}. Proof. by []. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmvalA
fmvalN: {morph valA : x / - x >-> x^-1%g}. Proof. by []. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmvalN
fmval0: valA 0 = 1%g. Proof. by []. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmval0
fmval_morphism:= @Morphism _ _ setT fmval (in2W fmvalA).
Canonical
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmval_morphism
fmval_sum:= big_morph fmval fmvalA fmval0.
Definition
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmval_sum
fmvalZn : {morph valA : x / x *+ n >-> (x ^+ n)%g}. Proof. by move=> u; rewrite /= morphX ?inE. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmvalZ
fmodKcondx : val (fmod x) = if x \in A then x else 1%g. Proof. by rewrite /= /fmval /= val_insubd. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmodKcond
fmodK: {in A, cancel fmod val}. Proof. exact: subgK. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmodK
fmvalK: cancel val fmod. Proof. by case=> x Ax; apply: val_inj; rewrite /fmod /= sgvalK. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmvalK
fmod1: fmod 1 = 0. Proof. by rewrite -fmval0 fmvalK. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmod1
fmodM: {in A &, {morph fmod : x y / (x * y)%g >-> x + y}}. Proof. by move=> x y Ax Ay /=; apply: val_inj; rewrite /fmod morphM. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmodM
fmod_morphism:= Morphism fmodM.
Canonical
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmod_morphism
fmodXn : {in A, {morph fmod : x / (x ^+ n)%g >-> x *+ n}}. Proof. exact: morphX. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmodX
fmodV: {morph fmod : x / x^-1%g >-> - x}. Proof. move=> x; apply: val_inj; rewrite fmvalN !fmodKcond groupV. by case: (x \in A); rewrite ?invg1. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmodV
injm_fmod: 'injm fmod. Proof. by apply/injmP=> x y Ax Ay []; move/val_inj; apply: (injmP (injm_subg A)). Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
injm_fmod
fmvalJcondu x : val (u ^@ x) = if x \in 'N(A) then val u ^ x else val u. Proof. by case: ifP => Nx; rewrite /actr Nx ?fmodK // memJ_norm ?fmodP. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmvalJcond
fmvalJu x : x \in 'N(A) -> val (u ^@ x) = val u ^ x. Proof. by move=> Nx; rewrite fmvalJcond Nx. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmvalJ
fmodJx y : y \in 'N(A) -> fmod (x ^ y) = fmod x ^@ y. Proof. move=> Ny; apply: val_inj; rewrite fmvalJ ?fmodKcond ?memJ_norm //. by case: ifP => // _; rewrite conj1g. Qed. Fact actr_is_action : is_action 'N(A) actr. Proof. split=> [a u v eq_uv_a | u a b Na Nb]. case Na: (a \in 'N(A)); last by rewrite /actr Na in eq_u...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
fmodJ
actr_action:= Action actr_is_action.
Canonical
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
actr_action
act0rx : 0 ^@ x = 0. Proof. by rewrite /actr conj1g morph1 if_same. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
act0r
actArx : {morph actr^~ x : u v / u + v}. Proof. by move=> u v; apply: val_inj; rewrite !(fmvalA, fmvalJcond) conjMg; case: ifP. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
actAr
actr_sumx := big_morph _ (actAr x) (act0r x).
Definition
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
actr_sum
actNrx : {morph actr^~ x : u / - u}. Proof. by move=> u; apply: (addrI (u ^@ x)); rewrite -actAr !subrr act0r. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
actNr
actZrx n : {morph actr^~ x : u / u *+ n}. Proof. by move=> u; elim: n => [|n IHn]; rewrite ?act0r // !mulrS actAr IHn. Qed. Fact actr_is_groupAction : is_groupAction setT 'M. Proof. move=> a Na /[1!inE]; apply/andP; split; first by apply/subsetP=> u _ /[1!inE]. by apply/morphicP=> u v _ _; rewrite !permE /= actAr. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
actZr
actr_groupAction:= GroupAction actr_is_groupAction.
Canonical
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
actr_groupAction
actr1u : u ^@ 1 = u. Proof. exact: act1. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
actr1
actrM: {in 'N(A) &, forall x y u, u ^@ (x * y) = u ^@ x ^@ y}. Proof. by move=> x y Nx Ny /= u; apply: val_inj; rewrite !fmvalJ ?conjgM ?groupM. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
actrM
actrKx : cancel (actr^~ x) (actr^~ x^-1%g). Proof. move=> u; apply: val_inj; rewrite !fmvalJcond groupV. by case: ifP => -> //; rewrite conjgK. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
actrK
actrKVx : cancel (actr^~ x^-1%g) (actr^~ x). Proof. by move=> u; rewrite /= -{2}(invgK x) actrK. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
actrKV
Gaschutz_split: [splits G, over H] = [splits P, over H]. Proof. apply/splitsP/splitsP=> [[K /complP[tiHK eqHK]] | [Q /complP[tiHQ eqHQ]]]. exists (K :&: P)%G; rewrite inE setICA (setIidPl sHP) setIC tiHK eqxx. by rewrite group_modl // eqHK (sameP eqP setIidPr). have sQP: Q \subset P by rewrite -eqHQ mulG_subr. pose...
Theorem
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
Gaschutz_split
Gaschutz_transitive: {in [complements to H in G] &, forall K L, K :&: P = L :&: P -> exists2 x, x \in H & L :=: K :^ x}. Proof. move=> K L /=; set Q := K :&: P => /complP[tiHK eqHK] cpHL QeqLP. have [trHL eqHL] := complP cpHL. pose nu x := fmod (divgr H L x^-1). have sKG: {subset K <= G} by apply/subsetP; rewrite -e...
Theorem
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
Gaschutz_transitive
coprime_abel_cent_TI(gT : finGroupType) (A G : {group gT}) : A \subset 'N(G) -> coprime #|G| #|A| -> abelian G -> 'C_[~: G, A](A) = 1. Proof. move=> nGA coGA abG; pose f x := val (\sum_(a in A) fmod abG x ^@ a)%R. have fM: {in G &, {morph f : x y / x * y}}. move=> x y Gx Gy /=; rewrite -fmvalA -big_split /=; congr ...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
coprime_abel_cent_TI
transferg := V repr g.
Definition
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
transfer
transferM: {in G &, {morph transfer : x y / (x * y)%g >-> x + y}}. Proof. move=> s t Gs Gt /=. rewrite [transfer t](reindex_acts 'Rs _ Gs) ?actsRs_rcosets //= -big_split /=. apply: eq_bigr => _ /rcosetsP[x Gx ->]; rewrite !rcosetE -!rcosetM. rewrite -zmodMgE -morphM -?mem_rcoset; first by rewrite !mulgA mulgKV rcosetM....
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
transferM
transfer_morphism:= Morphism transferM.
Canonical
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
transfer_morphism
transfer_indepX (rX := transversal_repr 1 X) : is_transversal X HG G -> {in G, transfer =1 V rX}. Proof. move=> trX g Gg; have mem_rX := repr_mem_pblock trX 1; rewrite -/rX in mem_rX. apply: (addrI (\sum_(Hx in HG) fmalpha (repr Hx * (rX Hx)^-1))). rewrite {1}(reindex_acts 'Rs _ Gg) ?actsRs_rcosets // -!big_split /=....
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
transfer_indep
mulg_exp_card_rcosetsx : x * (g ^+ n_ x) \in H :* x. Proof. rewrite /n_ /indexg -orbitRs -porbit_actperm ?inE //. rewrite -{2}(iter_porbit (actperm 'Rs g) (H :* x)) -permX -morphX ?inE //. by rewrite actpermE //= rcosetE -rcosetM rcoset_refl. Qed. Let HGg : {set {set {set gT}}} := orbit 'Rs <[g]> @: HG. Let partHG : pa...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
mulg_exp_card_rcosets
rcosets_cycle_partition: partition (HG :* <[g]>) G. Proof. by rewrite defHGg; have [] := partition_partition partHG partHGg. Qed. Variable X : {set gT}. Hypothesis trX : is_transversal X (HG :* <[g]>) G. Let sXG : {subset X <= G}. Proof. exact/subsetP/(transversal_sub trX). Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
rcosets_cycle_partition
rcosets_cycle_transversal: H_g_rcosets @: X = HGg. Proof. have sHXgHGg x: x \in X -> H_g_rcosets x \in HGg. by move/sXG=> Gx; apply: imset_f; rewrite -rcosetE imset_f. apply/setP=> Hxg; apply/imsetP/idP=> [[x /sHXgHGg HGgHxg -> //] | HGgHxg]. have [_ /rcosetsP[z Gz ->] ->] := imsetP HGgHxg. pose Hzg := H :* z * <[g]>...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
rcosets_cycle_transversal
sum_index_rcosets_cycle: (\sum_(x in X) n_ x)%N = #|G : H|. Proof. by rewrite [#|G : H|](card_partition partHGg) -defHgX big_imset. Qed.
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
sum_index_rcosets_cycle
transfer_cycle_expansion: transfer g = \sum_(x in X) fmalpha ((g ^+ n_ x) ^ (x^-1)). Proof. pose Y := \bigcup_(x in X) [set x * g ^+ i | i : 'I_(n_ x)]. pose rY := transversal_repr 1 Y. pose pcyc x := porbit (actperm 'Rs g) (H :* x). pose traj x := traject (actperm 'Rs g) (H :* x) #|pcyc x|. have Hgr_eq x: H_g_rcose...
Lemma
solvable
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype bigop ssralg finset fingroup", "From mathcomp Require Import morphism perm finalg action gproduct commutator ", "From mathcomp Require Import ...
solvable/finmodule.v
transfer_cycle_expansion
semiregularK H := {in H^#, forall x, 'C_K[x] = 1}.
Definition
solvable
[ "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat div", "From mathcomp Require Import fintype bigop prime finset fingroup morphism", "From mathcomp Require Import perm action quotient gproduct cyclic center", "From mathcomp Require Import pgroup nilpotent sylow hall abelian" ]
solvable/frobenius.v
semiregular
semiprimeK H := {in H^#, forall x, 'C_K[x] = 'C_K(H)}.
Definition
solvable
[ "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat div", "From mathcomp Require Import fintype bigop prime finset fingroup morphism", "From mathcomp Require Import perm action quotient gproduct cyclic center", "From mathcomp Require Import pgroup nilpotent sylow hall abelian" ]
solvable/frobenius.v
semiprime
normedTIA G L := [&& A != set0, trivIset (A :^: G) & 'N_G(A) == L].
Definition
solvable
[ "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat div", "From mathcomp Require Import fintype bigop prime finset fingroup morphism", "From mathcomp Require Import perm action quotient gproduct cyclic center", "From mathcomp Require Import pgroup nilpotent sylow hall abelian" ]
solvable/frobenius.v
normedTI
Frobenius_group_with_complementG H := (H != G) && normedTI H^# G H.
Definition
solvable
[ "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat div", "From mathcomp Require Import fintype bigop prime finset fingroup morphism", "From mathcomp Require Import perm action quotient gproduct cyclic center", "From mathcomp Require Import pgroup nilpotent sylow hall abelian" ]
solvable/frobenius.v
Frobenius_group_with_complement
Frobenius_groupG := [exists H : {group gT}, Frobenius_group_with_complement G H].
Definition
solvable
[ "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat div", "From mathcomp Require Import fintype bigop prime finset fingroup morphism", "From mathcomp Require Import perm action quotient gproduct cyclic center", "From mathcomp Require Import pgroup nilpotent sylow hall abelian" ]
solvable/frobenius.v
Frobenius_group
Frobenius_group_with_kernel_and_complementG K H := (K ><| H == G) && Frobenius_group_with_complement G H.
Definition
solvable
[ "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat div", "From mathcomp Require Import fintype bigop prime finset fingroup morphism", "From mathcomp Require Import perm action quotient gproduct cyclic center", "From mathcomp Require Import pgroup nilpotent sylow hall abelian" ]
solvable/frobenius.v
Frobenius_group_with_kernel_and_complement
Frobenius_group_with_kernelG K := [exists H : {group gT}, Frobenius_group_with_kernel_and_complement G K H].
Definition
solvable
[ "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat div", "From mathcomp Require Import fintype bigop prime finset fingroup morphism", "From mathcomp Require Import perm action quotient gproduct cyclic center", "From mathcomp Require Import pgroup nilpotent sylow hall abelian" ]
solvable/frobenius.v
Frobenius_group_with_kernel