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cfConjgQuo_normH K (phi : 'CF(H)) y : y \in 'N(K) -> y \in 'N(H) -> ((phi / K) ^ coset K y)%CF = (phi ^ y / K)%CF. Proof. move=> nKy nHy; have keryK: (K \subset cfker (phi ^ y)) = (K \subset cfker phi). by rewrite cfker_conjg // -{1}(normP nKy) conjSg. have [kerK | not_kerK] := boolP (K \subset cfker phi); last fir...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
cfConjgQuo_norm
cfConjgQuoG H K (phi : 'CF(H)) y : H <| G -> K <| G -> y \in G -> ((phi / K) ^ coset K y)%CF = (phi ^ y / K)%CF. Proof. move=> /andP[_ nHG] /andP[_ nKG] Gy. by rewrite cfConjgQuo_norm ?(subsetP nHG) ?(subsetP nKG). Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
cfConjgQuo
inertia_mod_preG H K (phi : 'CF(H / K)) : H <| G -> K <| G -> 'I_G[phi %% K] = G :&: coset K @*^-1 'I_(G / K)[phi]. Proof. by move=> nsHG /andP[_]; apply: inertia_morph_pre. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
inertia_mod_pre
inertia_mod_quoG H K (phi : 'CF(H / K)) : H <| G -> K <| G -> ('I_G[phi %% K] / K)%g = 'I_(G / K)[phi]. Proof. by move=> nsHG /andP[_]; apply: inertia_morph_im. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
inertia_mod_quo
inertia_quoG H K (phi : 'CF(H)) : H <| G -> K <| G -> K \subset cfker phi -> 'I_(G / K)[phi / K] = ('I_G[phi] / K)%g. Proof. move=> nsHG nsKG kerK; rewrite -inertia_mod_quo ?cfQuoK //. by rewrite (normalS _ (normal_sub nsHG)) // (subset_trans _ (cfker_sub phi)). Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
inertia_quo
cfConjgSdprodphi y : y \in 'N(K) -> y \in 'N(H) -> (cfSdprod defG phi ^ y = cfSdprod defG (phi ^ y))%CF. Proof. move=> nKy nHy. have nGy: y \in 'N(G) by rewrite -sub1set -(sdprodW defG) normsM ?sub1set. rewrite -{2}[phi](cfSdprodK defG) cfConjgRes_norm // cfRes_sdprodK //. by rewrite cfker_conjg // -{1}(normP nKy...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
cfConjgSdprod
inertia_sdprod(L : {group gT}) phi : L \subset 'N(K) -> L \subset 'N(H) -> 'I_L[cfSdprod defG phi] = 'I_L[phi]. Proof. move=> nKL nHL; have nGL: L \subset 'N(G) by rewrite -(sdprodW defG) normsM. apply/setP=> z; rewrite !in_setI ![z \in 'I[_]]inE; apply: andb_id2l => Lz. rewrite cfConjgSdprod ?(subsetP nKL) ?(subsetP...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
inertia_sdprod
cfConjgDprodlphi y : y \in 'N(K) -> y \in 'N(H) -> (cfDprodl KxH phi ^ y = cfDprodl KxH (phi ^ y))%CF. Proof. by move=> nKy nHy; apply: cfConjgSdprod. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
cfConjgDprodl
cfConjgDprodrpsi y : y \in 'N(K) -> y \in 'N(H) -> (cfDprodr KxH psi ^ y = cfDprodr KxH (psi ^ y))%CF. Proof. by move=> nKy nHy; apply: cfConjgSdprod. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
cfConjgDprodr
cfConjgDprodphi psi y : y \in 'N(K) -> y \in 'N(H) -> (cfDprod KxH phi psi ^ y = cfDprod KxH (phi ^ y) (psi ^ y))%CF. Proof. by move=> nKy nHy; rewrite rmorphM /= cfConjgDprodl ?cfConjgDprodr. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
cfConjgDprod
inertia_dprodlL phi : L \subset 'N(K) -> L \subset 'N(H) -> 'I_L[cfDprodl KxH phi] = 'I_L[phi]. Proof. by move=> nKL nHL; apply: inertia_sdprod. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
inertia_dprodl
inertia_dprodrL psi : L \subset 'N(K) -> L \subset 'N(H) -> 'I_L[cfDprodr KxH psi] = 'I_L[psi]. Proof. by move=> nKL nHL; apply: inertia_sdprod. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
inertia_dprodr
inertia_dprodL (phi : 'CF(K)) (psi : 'CF(H)) : L \subset 'N(K) -> L \subset 'N(H) -> phi 1%g != 0 -> psi 1%g != 0 -> 'I_L[cfDprod KxH phi psi] = 'I_L[phi] :&: 'I_L[psi]. Proof. move=> nKL nHL nz_phi nz_psi; apply/eqP; rewrite eqEsubset subsetI. rewrite -{1}(inertia_scale_nz psi nz_phi) -{1}(inertia_scale_nz phi n...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
inertia_dprod
inertia_dprod_irrL i j : L \subset 'N(K) -> L \subset 'N(H) -> 'I_L[cfDprod KxH 'chi_i 'chi_j] = 'I_L['chi_i] :&: 'I_L['chi_j]. Proof. by move=> nKL nHL; rewrite inertia_dprod ?irr1_neq0. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
inertia_dprod_irr
cfConjgBigdprodii (phi : 'CF(A i)) : (cfBigdprodi defG phi ^ y = cfBigdprodi defG (phi ^ y))%CF. Proof. rewrite cfConjgDprodl; try by case: ifP => [/nAy// | _]; rewrite norm1 inE. congr (cfDprodl _ _); case: ifP => [Pi | _]. by rewrite cfConjgRes_norm ?nAy. by apply/cfun_inP=> _ /set1P->; rewrite !(cfRes1, c...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
cfConjgBigdprodi
cfConjgBigdprodphi : (cfBigdprod defG phi ^ y = cfBigdprod defG (fun i => phi i ^ y))%CF. Proof. by rewrite rmorph_prod /=; apply: eq_bigr => i _; apply: cfConjgBigdprodi. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
cfConjgBigdprod
inertia_bigdprodii (phi : 'CF(A i)) : P i -> 'I_L[cfBigdprodi defG phi] = 'I_L[phi]. Proof. move=> Pi; rewrite inertia_dprodl ?Pi ?cfRes_id ?nAL //. by apply/norms_gen/norms_bigcup/bigcapsP=> j /andP[/nAL]. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
inertia_bigdprodi
inertia_bigdprodphi (Phi := cfBigdprod defG phi) : Phi 1%g != 0 -> 'I_L[Phi] = L :&: \bigcap_(i | P i) 'I_L[phi i]. Proof. move=> nz_Phi; apply/eqP; rewrite eqEsubset; apply/andP; split. rewrite subsetI Inertia_sub; apply/bigcapsP=> i Pi. have [] := cfBigdprodK nz_Phi Pi; move: (_ / _) => a nz_a <-. by rewrite ...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
inertia_bigdprod
inertia_bigdprod_irrIphi (phi := fun i => 'chi_(Iphi i)) : 'I_L[cfBigdprod defG phi] = L :&: \bigcap_(i | P i) 'I_L[phi i]. Proof. rewrite inertia_bigdprod // -[cfBigdprod _ _]cfIirrE ?irr1_neq0 //. by apply: cfBigdprod_irr => i _; apply: mem_irr. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
inertia_bigdprod_irr
constt_Inertia_bijection: [/\ {in calA, forall s, 'Ind[G] 'chi_s \in irr G},
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
constt_Inertia_bijection
mul_Iirrb := cfIirr ('chi_b * chi).
Definition
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
mul_Iirr
mul_mod_Iirr(b : Iirr (G / N)) := mul_Iirr (mod_Iirr b). Hypotheses (nsNG : N <| G) (cNt : 'Res[N] chi = theta). Let sNG : N \subset G. Proof. exact: normal_sub. Qed. Let nNG : G \subset 'N(N). Proof. exact: normal_norm. Qed.
Definition
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
mul_mod_Iirr
extendible_irr_invariant: G \subset 'I[theta]. Proof. apply/subsetP=> y Gy; have nNy := subsetP nNG y Gy. rewrite inE nNy; apply/eqP/cfun_inP=> x Nx; rewrite cfConjgE // -cNt. by rewrite !cfResE ?memJ_norm ?cfunJ ?groupV. Qed. Let IGtheta := extendible_irr_invariant.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
extendible_irr_invariant
constt_Ind_mul_extf (phi := 'chi_f) (psi := phi * theta) : G \subset 'I[phi] -> psi \in irr N -> let calS := irr_constt ('Ind phi) in [/\ {in calS, forall b, 'chi_b * chi \in irr G}, {in calS &, injective mul_Iirr}, irr_constt ('Ind psi) =i [seq mul_Iirr b | b in calS] & 'Ind psi = \sum_(b in calS...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
constt_Ind_mul_ext
invariant_chief_irr_casesG K L s (theta := 'chi[K]_s) : chief_factor G L K -> abelian (K / L) -> G \subset 'I[theta] -> let t := #|K : L| in [\/ 'Res[L] theta \in irr L, exists2 e, exists p, 'Res[L] theta = e%:R *: 'chi_p & (e ^ 2)%N = t | exists2 p, injective p & 'Res[L] theta = \sum_(i < t) 'chi_(p ...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
invariant_chief_irr_cases
extend_to_cfdetG N s c0 u : let theta := 'chi_s in let lambda := cfDet theta in let mu := 'chi_u in N <| G -> coprime #|G : N| (Num.truncn (theta 1%g)) -> 'Res[N, G] 'chi_c0 = theta -> 'Res[N, G] mu = lambda -> exists2 c, 'Res 'chi_c = theta /\ cfDet 'chi_c = mu & forall c1, 'Res 'chi_c1 = theta...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
extend_to_cfdet
solvable_irr_extendible_from_detG N s (theta := 'chi[N]_s) : N <| G -> solvable (G / N) -> G \subset 'I[theta] -> coprime #|G : N| (Num.truncn (theta 1%g)) -> [exists c, 'Res 'chi[G]_c == theta] = [exists u, 'Res 'chi[G]_u == cfDet theta]. Proof. set e := #|G : N|; set f := Num.truncn _ => nsNG solG IGthe...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
solvable_irr_extendible_from_det
extend_linear_char_from_SylowG N (lambda : 'CF(N)) : N <| G -> lambda \is a linear_char -> G \subset 'I[lambda] -> (forall p, p \in \pi('o(lambda)%CF) -> exists2 Hp : {group gT}, [/\ N \subset Hp, Hp \subset G & p.-Sylow(G / N) (Hp / N)%g] & exists u, 'Res 'chi[Hp]_u = lambda) -> exists...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
extend_linear_char_from_Sylow
inertia_Frobenius_keri : i != 0 -> 'I_G['chi[K]_i] = K. Proof. have [_ _ nsKG regK] := Frobenius_kerP frobGK; have [sKG nKG] := andP nsKG. move=> nzi; apply/eqP; rewrite eqEsubset sub_Inertia // andbT. apply/subsetP=> x /setIP[Gx /setIdP[nKx /eqP x_stab_i]]. have actIirrK: is_action G (@conjg_Iirr _ K). split=> [y j ...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
inertia_Frobenius_ker
irr_induced_Frobenius_keri : i != 0 -> 'Ind[G, K] 'chi_i \in irr G. Proof. move/inertia_Frobenius_ker/group_inj=> defK. have [_ _ nsKG _] := Frobenius_kerP frobGK. have [] := constt_Inertia_bijection i nsKG; rewrite defK cfInd_id => -> //. by rewrite constt_irr !inE. Qed.
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
irr_induced_Frobenius_ker
Frobenius_Ind_irrPj : reflect (exists2 i, i != 0 & 'chi_j = 'Ind[G, K] 'chi_i) (~~ (K \subset cfker 'chi_j)). Proof. have [_ _ nsKG _] := Frobenius_kerP frobGK; have [sKG nKG] := andP nsKG. apply: (iffP idP) => [not_chijK1 | [i nzi ->]]; last first. by rewrite cfker_Ind_irr ?sub_gcore // subGcfker. have /...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrfun ssrbool eqtype ssrnat seq path", "From mathcomp Require Import choice fintype div tuple finfun bigop prime order", "From mathcomp Require Import ssralg ssrnum finset fingroup morphism perm", "From mathcomp Require Import aut...
character/inertia.v
Frobenius_Ind_irrP
group_num_field_exists(gT : finGroupType) (G : {group gT}) : {Qn : splittingFieldType rat & galois 1 {:Qn} & {QnC : {rmorphism Qn -> algC} & forall nuQn : argumentType [in 'Gal({:Qn} / 1)], {nu : {rmorphism algC -> algC} | {morph QnC: a / nuQn a >-> nu a}} & {w : Q...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
group_num_field_exists
gring_classM_coef_set(Ki Kj : {set gT}) g := [set xy in [predX Ki & Kj] | let: (x, y) := xy in x * y == g]%g.
Definition
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
gring_classM_coef_set
gring_classM_coef(i j k : 'I_#|classes G|) := #|gring_classM_coef_set (enum_val i) (enum_val j) (repr (enum_val k))|.
Definition
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
gring_classM_coef
gring_class_sum(i : 'I_#|classes G|) := gset_mx F G (enum_val i). Local Notation "''K_' i" := (gring_class_sum i) (at level 8, i at level 2, format "''K_' i") : ring_scope. Local Notation a := gring_classM_coef.
Definition
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
gring_class_sum
gring_class_sum_centrali : ('K_i \in 'Z(group_ring F G))%MS. Proof. by rewrite -classg_base_center (eq_row_sub i) // rowK. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
gring_class_sum_central
set_gring_classM_coef(i j k : 'I_#|classes G|) g : g \in enum_val k -> a i j k = #|gring_classM_coef_set (enum_val i) (enum_val j) g|. Proof. rewrite /a; have /repr_classesP[] := enum_valP k; move: (repr _) => g1 Gg1 ->. have [/imsetP[zi Gzi ->] /imsetP[zj Gzj ->]] := (enum_valP i, enum_valP j). move=> g1Gg; have...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
set_gring_classM_coef
gring_classM_expansioni j : 'K_i *m 'K_j = \sum_k (a i j k)%:R *: 'K_k. Proof. have [/imsetP[zi Gzi dKi] /imsetP[zj Gzj dKj]] := (enum_valP i, enum_valP j). pose aG := regular_repr F G; have sKG := subsetP (class_subG _ (subxx G)). transitivity (\sum_(x in zi ^: G) \sum_(y in zj ^: G) aG (x * y)%g). rewrite mulmx_sum...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
gring_classM_expansion
gring_irr_mode_unlockable:= Unlockable gring_irr_mode.unlock. Arguments gring_irr_mode {gT G%_G} i%_R _%_g : extra scopes.
Canonical
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
gring_irr_mode_unlockable
Aint_char(chi : 'CF(G)) x : chi \is a character -> chi x \in Aint. Proof. have [Gx /char_reprP[rG ->] {chi} | /cfun0->//] := boolP (x \in G). have [e [_ [unit_e _] [-> _] _]] := repr_rsim_diag rG Gx. rewrite rpred_sum // => i _; apply: (@Aint_unity_root #[x]) => //. exact/unity_rootP. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
Aint_char
Aint_irri x : 'chi[G]_i x \in Aint. Proof. exact/Aint_char/irr_char. Qed. Local Notation R_G := (group_ring algCfield G). Local Notation a := gring_classM_coef.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
Aint_irr
mx_irr_gring_op_center_scalarn (rG : mx_representation algCfield G n) A : mx_irreducible rG -> (A \in 'Z(R_G))%MS -> is_scalar_mx (gring_op rG A). Proof. move/groupC=> irrG /center_mxP[R_A cGA]. apply: mx_abs_irr_cent_scalar irrG _ _; apply/centgmxP => x Gx. by rewrite -(gring_opG rG Gx) -!gring_opM ?cGA // envelop_m...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
mx_irr_gring_op_center_scalar
cfRepr_gring_centern1 (rG : mx_representation algCfield G n1) A : cfRepr rG = 'chi_i -> (A \in 'Z(R_G))%MS -> gring_op rG A = 'omega_i[A]%:M. Proof. move=> def_rG Z_A; rewrite unlock xcfunZl -{2}def_rG xcfun_repr. have irr_rG: mx_irreducible rG. have sim_rG: mx_rsim 'Chi_i rG by apply: cfRepr_inj; rewrite irrRepr. ...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
cfRepr_gring_center
irr_gring_centerA : (A \in 'Z(R_G))%MS -> gring_op 'Chi_i A = 'omega_i[A]%:M. Proof. exact: cfRepr_gring_center (irrRepr i). Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
irr_gring_center
gring_irr_modeMA B : (A \in 'Z(R_G))%MS -> (B \in 'Z(R_G))%MS -> 'omega_i[A *m B] = 'omega_i[A] * 'omega_i[B]. Proof. move=> Z_A Z_B; have [[R_A cRA] [R_B cRB]] := (center_mxP Z_A, center_mxP Z_B). apply: mxZn_inj; rewrite scalar_mxM -!irr_gring_center ?gring_opM //. apply/center_mxP; split=> [|C R_C]; first exac...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
gring_irr_modeM
gring_mode_class_sum_eq(k : 'I_#|classes G|) g : g \in enum_val k -> 'omega_i['K_k] = #|g ^: G|%:R * 'chi_i g / 'chi_i 1%g. Proof. have /imsetP[x Gx DxG] := enum_valP k; rewrite DxG => /imsetP[u Gu ->{g}]. rewrite unlock classGidl ?cfunJ {u Gu}// mulrC mulr_natl. rewrite xcfunZl raddf_sum DxG -sumr_const /=; congr (_...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
gring_mode_class_sum_eq
Aint_gring_mode_class_sumk : 'omega_i['K_k] \in Aint. Proof. move: k; pose X := [tuple 'omega_i['K_k] | k < #|classes G| ]. have memX k: 'omega_i['K_k] \in X by apply: image_f. have S_P := Cint_spanP X; set S := Cint_span X in S_P. have S_X: {subset X <= S} by apply: mem_Cint_span. have S_1: 1 \in S. apply: S_X; appl...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
Aint_gring_mode_class_sum
coprime_degree_support_cfcenterg : coprime (Num.truncn ('chi_i 1%g)) #|g ^: G| -> g \notin ('Z('chi_i))%CF -> 'chi_i g = 0. Proof. set m := Num.truncn _ => co_m_gG notZg. have [Gg | /cfun0-> //] := boolP (g \in G). have Dm: 'chi_i 1%g = m%:R by rewrite truncnK ?Cnat_irr1. have m_gt0: (0 < m)%N by rewrite -ltC_nat...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
coprime_degree_support_cfcenter
primes_class_simple_gt1C : simple G -> ~~ abelian G -> C \in (classes G)^# -> (size (primes #|C|) > 1)%N. Proof. move=> simpleG not_cGG /setD1P[ntC /imsetP[g Gg defC]]. have{ntC} nt_g: g != 1%g by rewrite defC classG_eq1 in ntC. rewrite ltnNge {C}defC; set m := #|_|; apply/negP=> p_natC. have{p_natC} [p p_pr [a Dm]]:...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
primes_class_simple_gt1
Burnside_p_a_q_bgT (G : {group gT}) : (size (primes #|G|) <= 2)%N -> solvable G. Proof. move: {2}_.+1 (ltnSn #|G|) => n; elim: n => // n IHn in gT G *. rewrite ltnS => leGn piGle2; have [simpleG | ] := boolP (simple G); last first. rewrite negb_forall_in => /exists_inP[N sNG]; rewrite eq_sym. have [->|] := eqVneq...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
Burnside_p_a_q_b
dvd_irr1_cardGgT (G : {group gT}) i : ('chi[G]_i 1%g %| #|G|)%C. Proof. rewrite unfold_in -if_neg irr1_neq0 Cint_rat_Aint //=. by rewrite rpred_div ?rpred_nat // rpred_nat_num ?Cnat_irr1. rewrite -[n in n / _]/(_ *+ true) -(eqxx i) -mulr_natr. rewrite -first_orthogonality_relation mulVKf ?neq0CG //. rewrite sum_by_cl...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
dvd_irr1_cardG
dvd_irr1_index_centergT (G : {group gT}) i : ('chi[G]_i 1%g %| #|G : 'Z('chi_i)%CF|)%C. Proof. without loss fful: gT G i / cfaithful 'chi_i. rewrite -{2}[i](quo_IirrK _ (subxx _)) 1?mod_IirrE ?cfModE ?cfker_normal //. rewrite morph1; set i1 := quo_Iirr _ i => /(_ _ _ i1) IH. have fful_i1: cfaithful 'chi_i1. ...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
dvd_irr1_index_center
gring_classM_coef_sum_eqgT (G : {group gT}) j1 j2 k g1 g2 g : let a := @gring_classM_coef gT G j1 j2 in let a_k := a k in g1 \in enum_val j1 -> g2 \in enum_val j2 -> g \in enum_val k -> let sum12g := \sum_i 'chi[G]_i g1 * 'chi_i g2 * ('chi_i g)^* / 'chi_i 1%g in a_k%:R = (#|enum_val j1| * #|enum_val j2|)%:R ...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
gring_classM_coef_sum_eq
index_support_dvd_degreegT (G H : {group gT}) chi : H \subset G -> chi \is a character -> chi \in 'CF(G, H) -> (H :==: 1%g) || abelian G -> (#|G : H| %| chi 1%g)%C. Proof. move=> sHG Nchi Hchi ZHG. suffices: (#|G : H| %| 'Res[H] chi 1%g)%C by rewrite cfResE ?group1. rewrite ['Res _]cfun_sum_cfdot sum_cfunE rp...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
index_support_dvd_degree
faithful_degree_p_partgT (p : nat) (G P : {group gT}) i : cfaithful 'chi[G]_i -> p.-nat (Num.truncn ('chi_i 1%g)) -> p.-Sylow(G) P -> abelian P -> 'chi_i 1%g = (#|G : 'Z(G)|`_p)%:R. Proof. have [p_pr | pr'p] := boolP (prime p); last first. have p'n n: (n > 0)%N -> p^'.-nat n. by move/p'natEpi->; rewrite...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
faithful_degree_p_part
sum_norm2_char_generatorsgT (G : {group gT}) (chi : 'CF(G)) : let S := [pred s | generator G s] in chi \is a character -> {in S, forall s, chi s != 0} -> \sum_(s in S) `|chi s| ^+ 2 >= #|S|%:R. Proof. move=> S Nchi nz_chi_S; pose n := #|G|. have [g Sg | S_0] := pickP (generator G); last first. by rewrite eq...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
sum_norm2_char_generators
nonlinear_irr_vanishgT (G : {group gT}) i : 'chi[G]_i 1%g > 1 -> exists2 x, x \in G & 'chi_i x = 0. Proof. move=> chi1gt1; apply/exists_eq_inP; apply: contraFT (lt_geF chi1gt1). move=> /exists_inPn-nz_chi. rewrite -(norm_natr (Cnat_irr1 i)) -(@expr_le1 _ 2)//. rewrite -(lerD2r (#|G|%:R * '['chi_i])) {1}cfnorm_irr mul...
Theorem
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime order", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import autom...
character/integral_char.v
nonlinear_irr_vanish
mx_repr_act(u : 'rV_n) x := u *m rG (val (subg G x)).
Definition
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
mx_repr_act
mx_repr_actEu x : x \in G -> mx_repr_act u x = u *m rG x. Proof. by move=> Gx; rewrite /mx_repr_act /= subgK. Qed. Fact mx_repr_is_action : is_action G mx_repr_act. Proof. split=> [x | u x y Gx Gy]; first exact: can_inj (repr_mxK _ (subgP _)). by rewrite !mx_repr_actE ?groupM // -mulmxA repr_mxM. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
mx_repr_actE
Structuremx_repr_action := Action mx_repr_is_action. Fact mx_repr_is_groupAction : is_groupAction [set: 'rV[R]_n] mx_repr_action. Proof. move=> x Gx /[!inE]; apply/andP; split; first by apply/subsetP=> u /[!inE]. by apply/morphicP=> /= u v _ _; rewrite !actpermE /= /mx_repr_act mulmxDl. Qed.
Canonical
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
Structure
Structuremx_repr_groupAction := GroupAction mx_repr_is_groupAction.
Canonical
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
Structure
scale_act(A : 'M[F]_(m, n)) (a : {unit F}) := val a *: A.
Definition
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
scale_act
scale_actEA a : scale_act A a = val a *: A. Proof. by []. Qed. Fact scale_is_action : is_action setT scale_act. Proof. apply: is_total_action=> [A | A a b]; rewrite /scale_act ?scale1r //. by rewrite ?scalerA mulrC. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
scale_actE
scale_action:= Action scale_is_action. Fact scale_is_groupAction : is_groupAction setT scale_action. Proof. move=> a _ /[1!inE]; apply/andP; split; first by apply/subsetP=> A /[!inE]. by apply/morphicP=> u A _ _ /=; rewrite !actpermE /= /scale_act scalerDr. Qed.
Canonical
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
scale_action
scale_groupAction:= GroupAction scale_is_groupAction.
Canonical
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
scale_groupAction
astab1_scale_actA : A != 0 -> 'C[A | scale_action] = 1%g. Proof. rewrite -mxrank_eq0=> nzA; apply/trivgP/subsetP=> a; apply: contraLR. rewrite !inE -val_eqE -subr_eq0 sub1set !inE => nz_a1. by rewrite -subr_eq0 -scaleN1r -scalerDl -mxrank_eq0 eqmx_scale. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
astab1_scale_act
rowgm (A : 'M[F]_(m, n)) : {set rVn} := [set u | u <= A]%MS.
Definition
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
rowg
mem_rowgm A v : (v \in @rowg m A) = (v <= A)%MS. Proof. by rewrite inE. Qed. Fact rowg_group_set m A : group_set (@rowg m A). Proof. by apply/group_setP; split=> [|u v]; rewrite !inE ?sub0mx //; apply: addmx_sub. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
mem_rowg
rowg_groupm A := Group (@rowg_group_set m A).
Canonical
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
rowg_group
rowg_stablem (A : 'M_(m, n)) : [acts setT, on rowg A | 'Zm]. Proof. by apply/actsP=> a _ v; rewrite !inE eqmx_scale // -unitfE (valP a). Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
rowg_stable
rowgSm1 m2 (A : 'M_(m1, n)) (B : 'M_(m2, n)) : (rowg A \subset rowg B) = (A <= B)%MS. Proof. apply/subsetP/idP=> sAB => [|u /[!inE] suA]; last exact: submx_trans sAB. by apply/row_subP=> i; have /[!(inE, row_sub)]-> := sAB (row i A). Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
rowgS
eq_rowgm1 m2 (A : 'M_(m1, n)) (B : 'M_(m2, n)) : (A :=: B)%MS -> rowg A = rowg B. Proof. by move=> eqAB; apply/eqP; rewrite eqEsubset !rowgS !eqAB andbb. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
eq_rowg
rowg0m : rowg (0 : 'M_(m, n)) = 1%g. Proof. by apply/trivgP/subsetP=> v; rewrite !inE eqmx0 submx0. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
rowg0
rowg1: rowg 1%:M = setT. Proof. by apply/setP=> x; rewrite !inE submx1. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
rowg1
trivg_rowgm (A : 'M_(m, n)) : (rowg A == 1%g) = (A == 0). Proof. by rewrite -submx0 -rowgS rowg0 (sameP trivgP eqP). Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
trivg_rowg
rowg_mx(L : {set rVn}) := <<\matrix_(i < #|L|) enum_val i>>%MS.
Definition
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
rowg_mx
rowgKm (A : 'M_(m, n)) : (rowg_mx (rowg A) :=: A)%MS. Proof. apply/eqmxP; rewrite !genmxE; apply/andP; split. by apply/row_subP=> i; rewrite rowK; have /[!inE] := enum_valP i. apply/row_subP=> i; set v := row i A. have Av: v \in rowg A by rewrite inE row_sub. by rewrite (eq_row_sub (enum_rank_in Av v)) // rowK enum_r...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
rowgK
rowg_mxS(L M : {set 'rV[F]_n}) : L \subset M -> (rowg_mx L <= rowg_mx M)%MS. Proof. move/subsetP=> sLM; rewrite !genmxE; apply/row_subP=> i. rewrite rowK; move: (enum_val i) (sLM _ (enum_valP i)) => v Mv. by rewrite (eq_row_sub (enum_rank_in Mv v)) // rowK enum_rankK_in. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
rowg_mxS
sub_rowg_mx(L : {set rVn}) : L \subset rowg (rowg_mx L). Proof. apply/subsetP=> v Lv; rewrite inE genmxE. by rewrite (eq_row_sub (enum_rank_in Lv v)) // rowK enum_rankK_in. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
sub_rowg_mx
stable_rowg_mxK(L : {group rVn}) : [acts setT, on L | 'Zm] -> rowg (rowg_mx L) = L. Proof. move=> linL; apply/eqP; rewrite eqEsubset sub_rowg_mx andbT. apply/subsetP=> v; rewrite inE genmxE => /submxP[u ->{v}]. rewrite mulmx_sum_row group_prod // => i _. rewrite rowK; move: (enum_val i) (enum_valP i) => v Lv. have [-...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
stable_rowg_mxK
rowg_mx1: rowg_mx 1%g = 0. Proof. by apply/eqP; rewrite -submx0 -(rowg0 0) rowgK sub0mx. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
rowg_mx1
rowg_mx_eq0(L : {group rVn}) : (rowg_mx L == 0) = (L :==: 1%g). Proof. rewrite -trivg_rowg; apply/idP/eqP=> [|->]; last by rewrite rowg_mx1 rowg0. exact/contraTeq/subG1_contra/sub_rowg_mx. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
rowg_mx_eq0
rowgIm1 m2 (A : 'M_(m1, n)) (B : 'M_(m2, n)) : rowg (A :&: B)%MS = rowg A :&: rowg B. Proof. by apply/setP=> u; rewrite !inE sub_capmx. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
rowgI
card_rowgm (A : 'M_(m, n)) : #|rowg A| = (#|F| ^ \rank A)%N. Proof. rewrite -[\rank A]mul1n -card_mx. have injA: injective (mulmxr (row_base A)). have /row_freeP[A' A'K] := row_base_free A. by move=> ?; apply: can_inj (mulmxr A') _ => u; rewrite /= -mulmxA A'K mulmx1. rewrite -(card_image (injA _)); apply: eq_card ...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
card_rowg
rowgDm1 m2 (A : 'M_(m1, n)) (B : 'M_(m2, n)) : rowg (A + B)%MS = (rowg A * rowg B)%g. Proof. apply/eqP; rewrite eq_sym eqEcard mulG_subG /= !rowgS. rewrite addsmxSl addsmxSr -(@leq_pmul2r #|rowg A :&: rowg B|) ?cardG_gt0 //=. by rewrite -mul_cardG -rowgI !card_rowg -!expnD mxrank_sum_cap. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
rowgD
cprod_rowgm1 m2 (A : 'M_(m1, n)) (B : 'M_(m2, n)) : (rowg A \* rowg B)%g = rowg (A + B)%MS. Proof. by rewrite rowgD cprodE // (sub_abelian_cent2 (zmod_abelian setT)). Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
cprod_rowg
dprod_rowgm1 m2 (A : 'M[F]_(m1, n)) (B : 'M[F]_(m2, n)) : mxdirect (A + B) -> rowg A \x rowg B = rowg (A + B)%MS. Proof. rewrite (sameP mxdirect_addsP eqP) -trivg_rowg rowgI => /eqP tiAB. by rewrite -cprod_rowg dprodEcp. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
dprod_rowg
bigcprod_rowgm I r (P : pred I) (A : I -> 'M[F]_n) (B : 'M[F]_(m, n)) : (\sum_(i <- r | P i) A i :=: B)%MS -> \big[cprod/1%g]_(i <- r | P i) rowg (A i) = rowg B. Proof. by move/eq_rowg <-; apply/esym/big_morph=> [? ?|]; rewrite (rowg0, cprod_rowg). Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
bigcprod_rowg
bigdprod_rowgm (I : finType) (P : pred I) A (B : 'M[F]_(m, n)) : let S := (\sum_(i | P i) A i)%MS in (S :=: B)%MS -> mxdirect S -> \big[dprod/1%g]_(i | P i) rowg (A i) = rowg B. Proof. move=> S defS; rewrite mxdirectE defS /= => /eqP rankB. apply: bigcprod_card_dprod (bigcprod_rowg defS) (eq_leq _). by rewrite ca...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
bigdprod_rowg
GLrepr:= MxRepresentation GL_mx_repr.
Canonical
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
GLrepr
GLmx_faithful: mx_faithful GLrepr. Proof. by apply/subsetP=> A; rewrite !inE mul1mx. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
GLmx_faithful
reprGLmx : {'GL_n[F]} := insubd (1%g : {'GL_n[F]}) (rG x).
Definition
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
reprGLm
val_reprGLmx : x \in G -> val (reprGLm x) = rG x. Proof. by move=> Gx; rewrite val_insubd (repr_mx_unitr rG). Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
val_reprGLm
comp_reprGLm: {in G, GLval \o reprGLm =1 rG}. Proof. exact: val_reprGLm. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
comp_reprGLm
reprGLmM: {in G &, {morph reprGLm : x y / x * y}}%g. Proof. by move=> x y Gx Gy; apply: val_inj; rewrite /= !val_reprGLm ?groupM ?repr_mxM. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
reprGLmM
reprGL_morphism:= Morphism reprGLmM.
Canonical
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
reprGL_morphism
ker_reprGLm: 'ker reprGLm = rker rG. Proof. apply/setP=> x; rewrite !inE mul1mx; apply: andb_id2l => Gx. by rewrite -val_eqE val_reprGLm. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
ker_reprGLm
astab_rowg_reprm (A : 'M_(m, n)) : 'C(rowg A | 'MR rG) = rstab rG A. Proof. apply/setP=> x /[!inE]/=; apply: andb_id2l => Gx. apply/subsetP/eqP=> cAx => [|u]; last first. by rewrite !inE mx_repr_actE // => /submxP[u' ->]; rewrite -mulmxA cAx. apply/row_matrixP=> i; apply/eqP; move/implyP: (cAx (row i A)). by rewrite ...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
astab_rowg_repr
astabs_rowg_reprm (A : 'M_(m, n)) : 'N(rowg A | 'MR rG) = rstabs rG A. Proof. apply/setP=> x /[!inE]/=; apply: andb_id2l => Gx. apply/subsetP/idP=> nAx => [|u]; last first. by rewrite !inE mx_repr_actE // => Au; apply: (submx_trans (submxMr _ Au)). apply/row_subP=> i; move/implyP: (nAx (row i A)). by rewrite !inE row...
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
astabs_rowg_repr
acts_rowg(A : 'M_n) : [acts G, on rowg A | 'MR rG] = mxmodule rG A. Proof. by rewrite astabs_rowg_repr. Qed.
Lemma
character
[ "From HB Require Import structures", "From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq path", "From mathcomp Require Import div choice fintype tuple finfun bigop prime", "From mathcomp Require Import ssralg poly finset fingroup morphism perm", "From mathcomp Require Import automorphis...
character/mxabelem.v
acts_rowg