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Theorem sylow2blem1 18720
Description: Lemma for sylow2b 18723. Evaluate the group action on a left coset. (Contributed by Mario Carneiro, 17-Jan-2015.)
Hypotheses
Ref Expression
sylow2b.x 𝑋 = (Base‘𝐺)
sylow2b.xf (𝜑𝑋 ∈ Fin)
sylow2b.h (𝜑𝐻 ∈ (SubGrp‘𝐺))
sylow2b.k (𝜑𝐾 ∈ (SubGrp‘𝐺))
sylow2b.a + = (+g𝐺)
sylow2b.r = (𝐺 ~QG 𝐾)
sylow2b.m · = (𝑥𝐻, 𝑦 ∈ (𝑋 / ) ↦ ran (𝑧𝑦 ↦ (𝑥 + 𝑧)))
Assertion
Ref Expression
sylow2blem1 ((𝜑𝐵𝐻𝐶𝑋) → (𝐵 · [𝐶] ) = [(𝐵 + 𝐶)] )
Distinct variable groups:   𝑥,𝑦,𝑧,𝐺   𝑥,𝐾,𝑦,𝑧   𝑥, · ,𝑦,𝑧   𝑥, + ,𝑦,𝑧   𝑥, ,𝑦,𝑧   𝜑,𝑧   𝑥,𝐵,𝑦,𝑧   𝑥,𝐶,𝑦,𝑧   𝑥,𝐻,𝑦,𝑧   𝑥,𝑋,𝑦,𝑧
Allowed substitution hints:   𝜑(𝑥,𝑦)

Proof of Theorem sylow2blem1
StepHypRef Expression
1 simp2 1133 . . 3 ((𝜑𝐵𝐻𝐶𝑋) → 𝐵𝐻)
2 sylow2b.r . . . . 5 = (𝐺 ~QG 𝐾)
32ovexi 7163 . . . 4 ∈ V
4 simp3 1134 . . . 4 ((𝜑𝐵𝐻𝐶𝑋) → 𝐶𝑋)
5 ecelqsg 8326 . . . 4 (( ∈ V ∧ 𝐶𝑋) → [𝐶] ∈ (𝑋 / ))
63, 4, 5sylancr 589 . . 3 ((𝜑𝐵𝐻𝐶𝑋) → [𝐶] ∈ (𝑋 / ))
7 simpr 487 . . . . . 6 ((𝑥 = 𝐵𝑦 = [𝐶] ) → 𝑦 = [𝐶] )
8 simpl 485 . . . . . . 7 ((𝑥 = 𝐵𝑦 = [𝐶] ) → 𝑥 = 𝐵)
98oveq1d 7144 . . . . . 6 ((𝑥 = 𝐵𝑦 = [𝐶] ) → (𝑥 + 𝑧) = (𝐵 + 𝑧))
107, 9mpteq12dv 5123 . . . . 5 ((𝑥 = 𝐵𝑦 = [𝐶] ) → (𝑧𝑦 ↦ (𝑥 + 𝑧)) = (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)))
1110rneqd 5780 . . . 4 ((𝑥 = 𝐵𝑦 = [𝐶] ) → ran (𝑧𝑦 ↦ (𝑥 + 𝑧)) = ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)))
12 sylow2b.m . . . 4 · = (𝑥𝐻, 𝑦 ∈ (𝑋 / ) ↦ ran (𝑧𝑦 ↦ (𝑥 + 𝑧)))
13 ecexg 8267 . . . . . . 7 ( ∈ V → [𝐶] ∈ V)
143, 13ax-mp 5 . . . . . 6 [𝐶] ∈ V
1514mptex 6958 . . . . 5 (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) ∈ V
1615rnex 7591 . . . 4 ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) ∈ V
1711, 12, 16ovmpoa 7278 . . 3 ((𝐵𝐻 ∧ [𝐶] ∈ (𝑋 / )) → (𝐵 · [𝐶] ) = ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)))
181, 6, 17syl2anc 586 . 2 ((𝜑𝐵𝐻𝐶𝑋) → (𝐵 · [𝐶] ) = ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)))
19 sylow2b.xf . . . . 5 (𝜑𝑋 ∈ Fin)
20 sylow2b.k . . . . . . 7 (𝜑𝐾 ∈ (SubGrp‘𝐺))
21 sylow2b.x . . . . . . . 8 𝑋 = (Base‘𝐺)
2221, 2eqger 18305 . . . . . . 7 (𝐾 ∈ (SubGrp‘𝐺) → Er 𝑋)
2320, 22syl 17 . . . . . 6 (𝜑 Er 𝑋)
2423ecss 8309 . . . . 5 (𝜑 → [(𝐵 + 𝐶)] 𝑋)
2519, 24ssfid 8715 . . . 4 (𝜑 → [(𝐵 + 𝐶)] ∈ Fin)
26253ad2ant1 1129 . . 3 ((𝜑𝐵𝐻𝐶𝑋) → [(𝐵 + 𝐶)] ∈ Fin)
27 vex 3473 . . . . . . . 8 𝑧 ∈ V
28 elecg 8306 . . . . . . . 8 ((𝑧 ∈ V ∧ 𝐶𝑋) → (𝑧 ∈ [𝐶] 𝐶 𝑧))
2927, 4, 28sylancr 589 . . . . . . 7 ((𝜑𝐵𝐻𝐶𝑋) → (𝑧 ∈ [𝐶] 𝐶 𝑧))
3029biimpa 479 . . . . . 6 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝑧 ∈ [𝐶] ) → 𝐶 𝑧)
31 sylow2b.h . . . . . . . . . . . 12 (𝜑𝐻 ∈ (SubGrp‘𝐺))
32 subgrcl 18259 . . . . . . . . . . . 12 (𝐻 ∈ (SubGrp‘𝐺) → 𝐺 ∈ Grp)
3331, 32syl 17 . . . . . . . . . . 11 (𝜑𝐺 ∈ Grp)
34333ad2ant1 1129 . . . . . . . . . 10 ((𝜑𝐵𝐻𝐶𝑋) → 𝐺 ∈ Grp)
3521subgss 18255 . . . . . . . . . . . . 13 (𝐻 ∈ (SubGrp‘𝐺) → 𝐻𝑋)
3631, 35syl 17 . . . . . . . . . . . 12 (𝜑𝐻𝑋)
37363ad2ant1 1129 . . . . . . . . . . 11 ((𝜑𝐵𝐻𝐶𝑋) → 𝐻𝑋)
3837, 1sseldd 3943 . . . . . . . . . 10 ((𝜑𝐵𝐻𝐶𝑋) → 𝐵𝑋)
39 sylow2b.a . . . . . . . . . . 11 + = (+g𝐺)
4021, 39grpcl 18086 . . . . . . . . . 10 ((𝐺 ∈ Grp ∧ 𝐵𝑋𝐶𝑋) → (𝐵 + 𝐶) ∈ 𝑋)
4134, 38, 4, 40syl3anc 1367 . . . . . . . . 9 ((𝜑𝐵𝐻𝐶𝑋) → (𝐵 + 𝐶) ∈ 𝑋)
4241adantr 483 . . . . . . . 8 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → (𝐵 + 𝐶) ∈ 𝑋)
4334adantr 483 . . . . . . . . 9 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → 𝐺 ∈ Grp)
4438adantr 483 . . . . . . . . 9 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → 𝐵𝑋)
4521subgss 18255 . . . . . . . . . . . . . 14 (𝐾 ∈ (SubGrp‘𝐺) → 𝐾𝑋)
4620, 45syl 17 . . . . . . . . . . . . 13 (𝜑𝐾𝑋)
47 eqid 2820 . . . . . . . . . . . . . 14 (invg𝐺) = (invg𝐺)
4821, 47, 39, 2eqgval 18304 . . . . . . . . . . . . 13 ((𝐺 ∈ Grp ∧ 𝐾𝑋) → (𝐶 𝑧 ↔ (𝐶𝑋𝑧𝑋 ∧ (((invg𝐺)‘𝐶) + 𝑧) ∈ 𝐾)))
4933, 46, 48syl2anc 586 . . . . . . . . . . . 12 (𝜑 → (𝐶 𝑧 ↔ (𝐶𝑋𝑧𝑋 ∧ (((invg𝐺)‘𝐶) + 𝑧) ∈ 𝐾)))
50493ad2ant1 1129 . . . . . . . . . . 11 ((𝜑𝐵𝐻𝐶𝑋) → (𝐶 𝑧 ↔ (𝐶𝑋𝑧𝑋 ∧ (((invg𝐺)‘𝐶) + 𝑧) ∈ 𝐾)))
5150biimpa 479 . . . . . . . . . 10 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → (𝐶𝑋𝑧𝑋 ∧ (((invg𝐺)‘𝐶) + 𝑧) ∈ 𝐾))
5251simp2d 1139 . . . . . . . . 9 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → 𝑧𝑋)
5321, 39grpcl 18086 . . . . . . . . 9 ((𝐺 ∈ Grp ∧ 𝐵𝑋𝑧𝑋) → (𝐵 + 𝑧) ∈ 𝑋)
5443, 44, 52, 53syl3anc 1367 . . . . . . . 8 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → (𝐵 + 𝑧) ∈ 𝑋)
5521, 47grpinvcl 18126 . . . . . . . . . . . . 13 ((𝐺 ∈ Grp ∧ (𝐵 + 𝐶) ∈ 𝑋) → ((invg𝐺)‘(𝐵 + 𝐶)) ∈ 𝑋)
5634, 41, 55syl2anc 586 . . . . . . . . . . . 12 ((𝜑𝐵𝐻𝐶𝑋) → ((invg𝐺)‘(𝐵 + 𝐶)) ∈ 𝑋)
5756adantr 483 . . . . . . . . . . 11 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → ((invg𝐺)‘(𝐵 + 𝐶)) ∈ 𝑋)
5821, 39grpass 18087 . . . . . . . . . . 11 ((𝐺 ∈ Grp ∧ (((invg𝐺)‘(𝐵 + 𝐶)) ∈ 𝑋𝐵𝑋𝑧𝑋)) → ((((invg𝐺)‘(𝐵 + 𝐶)) + 𝐵) + 𝑧) = (((invg𝐺)‘(𝐵 + 𝐶)) + (𝐵 + 𝑧)))
5943, 57, 44, 52, 58syl13anc 1368 . . . . . . . . . 10 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → ((((invg𝐺)‘(𝐵 + 𝐶)) + 𝐵) + 𝑧) = (((invg𝐺)‘(𝐵 + 𝐶)) + (𝐵 + 𝑧)))
6021, 39, 47grpinvadd 18152 . . . . . . . . . . . . . . . 16 ((𝐺 ∈ Grp ∧ 𝐵𝑋𝐶𝑋) → ((invg𝐺)‘(𝐵 + 𝐶)) = (((invg𝐺)‘𝐶) + ((invg𝐺)‘𝐵)))
6134, 38, 4, 60syl3anc 1367 . . . . . . . . . . . . . . 15 ((𝜑𝐵𝐻𝐶𝑋) → ((invg𝐺)‘(𝐵 + 𝐶)) = (((invg𝐺)‘𝐶) + ((invg𝐺)‘𝐵)))
6221, 47grpinvcl 18126 . . . . . . . . . . . . . . . . 17 ((𝐺 ∈ Grp ∧ 𝐶𝑋) → ((invg𝐺)‘𝐶) ∈ 𝑋)
6334, 4, 62syl2anc 586 . . . . . . . . . . . . . . . 16 ((𝜑𝐵𝐻𝐶𝑋) → ((invg𝐺)‘𝐶) ∈ 𝑋)
64 eqid 2820 . . . . . . . . . . . . . . . . 17 (-g𝐺) = (-g𝐺)
6521, 39, 47, 64grpsubval 18124 . . . . . . . . . . . . . . . 16 ((((invg𝐺)‘𝐶) ∈ 𝑋𝐵𝑋) → (((invg𝐺)‘𝐶)(-g𝐺)𝐵) = (((invg𝐺)‘𝐶) + ((invg𝐺)‘𝐵)))
6663, 38, 65syl2anc 586 . . . . . . . . . . . . . . 15 ((𝜑𝐵𝐻𝐶𝑋) → (((invg𝐺)‘𝐶)(-g𝐺)𝐵) = (((invg𝐺)‘𝐶) + ((invg𝐺)‘𝐵)))
6761, 66eqtr4d 2858 . . . . . . . . . . . . . 14 ((𝜑𝐵𝐻𝐶𝑋) → ((invg𝐺)‘(𝐵 + 𝐶)) = (((invg𝐺)‘𝐶)(-g𝐺)𝐵))
6867oveq1d 7144 . . . . . . . . . . . . 13 ((𝜑𝐵𝐻𝐶𝑋) → (((invg𝐺)‘(𝐵 + 𝐶)) + 𝐵) = ((((invg𝐺)‘𝐶)(-g𝐺)𝐵) + 𝐵))
6921, 39, 64grpnpcan 18166 . . . . . . . . . . . . . 14 ((𝐺 ∈ Grp ∧ ((invg𝐺)‘𝐶) ∈ 𝑋𝐵𝑋) → ((((invg𝐺)‘𝐶)(-g𝐺)𝐵) + 𝐵) = ((invg𝐺)‘𝐶))
7034, 63, 38, 69syl3anc 1367 . . . . . . . . . . . . 13 ((𝜑𝐵𝐻𝐶𝑋) → ((((invg𝐺)‘𝐶)(-g𝐺)𝐵) + 𝐵) = ((invg𝐺)‘𝐶))
7168, 70eqtrd 2855 . . . . . . . . . . . 12 ((𝜑𝐵𝐻𝐶𝑋) → (((invg𝐺)‘(𝐵 + 𝐶)) + 𝐵) = ((invg𝐺)‘𝐶))
7271oveq1d 7144 . . . . . . . . . . 11 ((𝜑𝐵𝐻𝐶𝑋) → ((((invg𝐺)‘(𝐵 + 𝐶)) + 𝐵) + 𝑧) = (((invg𝐺)‘𝐶) + 𝑧))
7372adantr 483 . . . . . . . . . 10 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → ((((invg𝐺)‘(𝐵 + 𝐶)) + 𝐵) + 𝑧) = (((invg𝐺)‘𝐶) + 𝑧))
7459, 73eqtr3d 2857 . . . . . . . . 9 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → (((invg𝐺)‘(𝐵 + 𝐶)) + (𝐵 + 𝑧)) = (((invg𝐺)‘𝐶) + 𝑧))
7551simp3d 1140 . . . . . . . . 9 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → (((invg𝐺)‘𝐶) + 𝑧) ∈ 𝐾)
7674, 75eqeltrd 2911 . . . . . . . 8 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → (((invg𝐺)‘(𝐵 + 𝐶)) + (𝐵 + 𝑧)) ∈ 𝐾)
7721, 47, 39, 2eqgval 18304 . . . . . . . . . . 11 ((𝐺 ∈ Grp ∧ 𝐾𝑋) → ((𝐵 + 𝐶) (𝐵 + 𝑧) ↔ ((𝐵 + 𝐶) ∈ 𝑋 ∧ (𝐵 + 𝑧) ∈ 𝑋 ∧ (((invg𝐺)‘(𝐵 + 𝐶)) + (𝐵 + 𝑧)) ∈ 𝐾)))
7833, 46, 77syl2anc 586 . . . . . . . . . 10 (𝜑 → ((𝐵 + 𝐶) (𝐵 + 𝑧) ↔ ((𝐵 + 𝐶) ∈ 𝑋 ∧ (𝐵 + 𝑧) ∈ 𝑋 ∧ (((invg𝐺)‘(𝐵 + 𝐶)) + (𝐵 + 𝑧)) ∈ 𝐾)))
79783ad2ant1 1129 . . . . . . . . 9 ((𝜑𝐵𝐻𝐶𝑋) → ((𝐵 + 𝐶) (𝐵 + 𝑧) ↔ ((𝐵 + 𝐶) ∈ 𝑋 ∧ (𝐵 + 𝑧) ∈ 𝑋 ∧ (((invg𝐺)‘(𝐵 + 𝐶)) + (𝐵 + 𝑧)) ∈ 𝐾)))
8079adantr 483 . . . . . . . 8 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → ((𝐵 + 𝐶) (𝐵 + 𝑧) ↔ ((𝐵 + 𝐶) ∈ 𝑋 ∧ (𝐵 + 𝑧) ∈ 𝑋 ∧ (((invg𝐺)‘(𝐵 + 𝐶)) + (𝐵 + 𝑧)) ∈ 𝐾)))
8142, 54, 76, 80mpbir3and 1338 . . . . . . 7 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → (𝐵 + 𝐶) (𝐵 + 𝑧))
82 ovex 7162 . . . . . . . 8 (𝐵 + 𝑧) ∈ V
83 ovex 7162 . . . . . . . 8 (𝐵 + 𝐶) ∈ V
8482, 83elec 8307 . . . . . . 7 ((𝐵 + 𝑧) ∈ [(𝐵 + 𝐶)] ↔ (𝐵 + 𝐶) (𝐵 + 𝑧))
8581, 84sylibr 236 . . . . . 6 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝐶 𝑧) → (𝐵 + 𝑧) ∈ [(𝐵 + 𝐶)] )
8630, 85syldan 593 . . . . 5 (((𝜑𝐵𝐻𝐶𝑋) ∧ 𝑧 ∈ [𝐶] ) → (𝐵 + 𝑧) ∈ [(𝐵 + 𝐶)] )
8786fmpttd 6851 . . . 4 ((𝜑𝐵𝐻𝐶𝑋) → (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)):[𝐶] ⟶[(𝐵 + 𝐶)] )
8887frnd 6493 . . 3 ((𝜑𝐵𝐻𝐶𝑋) → ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) ⊆ [(𝐵 + 𝐶)] )
89 eqid 2820 . . . . . . . . . . 11 (𝑧𝑋 ↦ (𝐵 + 𝑧)) = (𝑧𝑋 ↦ (𝐵 + 𝑧))
9021, 39, 89grplmulf1o 18148 . . . . . . . . . 10 ((𝐺 ∈ Grp ∧ 𝐵𝑋) → (𝑧𝑋 ↦ (𝐵 + 𝑧)):𝑋1-1-onto𝑋)
9134, 38, 90syl2anc 586 . . . . . . . . 9 ((𝜑𝐵𝐻𝐶𝑋) → (𝑧𝑋 ↦ (𝐵 + 𝑧)):𝑋1-1-onto𝑋)
92 f1of1 6586 . . . . . . . . 9 ((𝑧𝑋 ↦ (𝐵 + 𝑧)):𝑋1-1-onto𝑋 → (𝑧𝑋 ↦ (𝐵 + 𝑧)):𝑋1-1𝑋)
9391, 92syl 17 . . . . . . . 8 ((𝜑𝐵𝐻𝐶𝑋) → (𝑧𝑋 ↦ (𝐵 + 𝑧)):𝑋1-1𝑋)
9423ecss 8309 . . . . . . . . 9 (𝜑 → [𝐶] 𝑋)
95943ad2ant1 1129 . . . . . . . 8 ((𝜑𝐵𝐻𝐶𝑋) → [𝐶] 𝑋)
96 f1ssres 6554 . . . . . . . 8 (((𝑧𝑋 ↦ (𝐵 + 𝑧)):𝑋1-1𝑋 ∧ [𝐶] 𝑋) → ((𝑧𝑋 ↦ (𝐵 + 𝑧)) ↾ [𝐶] ):[𝐶] 1-1𝑋)
9793, 95, 96syl2anc 586 . . . . . . 7 ((𝜑𝐵𝐻𝐶𝑋) → ((𝑧𝑋 ↦ (𝐵 + 𝑧)) ↾ [𝐶] ):[𝐶] 1-1𝑋)
98 resmpt 5877 . . . . . . . 8 ([𝐶] 𝑋 → ((𝑧𝑋 ↦ (𝐵 + 𝑧)) ↾ [𝐶] ) = (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)))
99 f1eq1 6542 . . . . . . . 8 (((𝑧𝑋 ↦ (𝐵 + 𝑧)) ↾ [𝐶] ) = (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) → (((𝑧𝑋 ↦ (𝐵 + 𝑧)) ↾ [𝐶] ):[𝐶] 1-1𝑋 ↔ (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)):[𝐶] 1-1𝑋))
10095, 98, 993syl 18 . . . . . . 7 ((𝜑𝐵𝐻𝐶𝑋) → (((𝑧𝑋 ↦ (𝐵 + 𝑧)) ↾ [𝐶] ):[𝐶] 1-1𝑋 ↔ (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)):[𝐶] 1-1𝑋))
10197, 100mpbid 234 . . . . . 6 ((𝜑𝐵𝐻𝐶𝑋) → (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)):[𝐶] 1-1𝑋)
102 f1f1orn 6598 . . . . . 6 ((𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)):[𝐶] 1-1𝑋 → (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)):[𝐶] 1-1-onto→ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)))
103101, 102syl 17 . . . . 5 ((𝜑𝐵𝐻𝐶𝑋) → (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)):[𝐶] 1-1-onto→ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)))
10414f1oen 8504 . . . . 5 ((𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)):[𝐶] 1-1-onto→ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) → [𝐶] ≈ ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)))
105 ensym 8532 . . . . 5 ([𝐶] ≈ ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) → ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) ≈ [𝐶] )
106103, 104, 1053syl 18 . . . 4 ((𝜑𝐵𝐻𝐶𝑋) → ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) ≈ [𝐶] )
107203ad2ant1 1129 . . . . . . 7 ((𝜑𝐵𝐻𝐶𝑋) → 𝐾 ∈ (SubGrp‘𝐺))
10821, 2eqgen 18308 . . . . . . 7 ((𝐾 ∈ (SubGrp‘𝐺) ∧ [𝐶] ∈ (𝑋 / )) → 𝐾 ≈ [𝐶] )
109107, 6, 108syl2anc 586 . . . . . 6 ((𝜑𝐵𝐻𝐶𝑋) → 𝐾 ≈ [𝐶] )
110 ensym 8532 . . . . . 6 (𝐾 ≈ [𝐶] → [𝐶] 𝐾)
111109, 110syl 17 . . . . 5 ((𝜑𝐵𝐻𝐶𝑋) → [𝐶] 𝐾)
112 ecelqsg 8326 . . . . . . 7 (( ∈ V ∧ (𝐵 + 𝐶) ∈ 𝑋) → [(𝐵 + 𝐶)] ∈ (𝑋 / ))
1133, 41, 112sylancr 589 . . . . . 6 ((𝜑𝐵𝐻𝐶𝑋) → [(𝐵 + 𝐶)] ∈ (𝑋 / ))
11421, 2eqgen 18308 . . . . . 6 ((𝐾 ∈ (SubGrp‘𝐺) ∧ [(𝐵 + 𝐶)] ∈ (𝑋 / )) → 𝐾 ≈ [(𝐵 + 𝐶)] )
115107, 113, 114syl2anc 586 . . . . 5 ((𝜑𝐵𝐻𝐶𝑋) → 𝐾 ≈ [(𝐵 + 𝐶)] )
116 entr 8535 . . . . 5 (([𝐶] 𝐾𝐾 ≈ [(𝐵 + 𝐶)] ) → [𝐶] ≈ [(𝐵 + 𝐶)] )
117111, 115, 116syl2anc 586 . . . 4 ((𝜑𝐵𝐻𝐶𝑋) → [𝐶] ≈ [(𝐵 + 𝐶)] )
118 entr 8535 . . . 4 ((ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) ≈ [𝐶] ∧ [𝐶] ≈ [(𝐵 + 𝐶)] ) → ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) ≈ [(𝐵 + 𝐶)] )
119106, 117, 118syl2anc 586 . . 3 ((𝜑𝐵𝐻𝐶𝑋) → ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) ≈ [(𝐵 + 𝐶)] )
120 fisseneq 8703 . . 3 (([(𝐵 + 𝐶)] ∈ Fin ∧ ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) ⊆ [(𝐵 + 𝐶)] ∧ ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) ≈ [(𝐵 + 𝐶)] ) → ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) = [(𝐵 + 𝐶)] )
12126, 88, 119, 120syl3anc 1367 . 2 ((𝜑𝐵𝐻𝐶𝑋) → ran (𝑧 ∈ [𝐶] ↦ (𝐵 + 𝑧)) = [(𝐵 + 𝐶)] )
12218, 121eqtrd 2855 1 ((𝜑𝐵𝐻𝐶𝑋) → (𝐵 · [𝐶] ) = [(𝐵 + 𝐶)] )
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 208  wa 398  w3a 1083   = wceq 1537  wcel 2114  Vcvv 3470  wss 3909   class class class wbr 5038  cmpt 5118  ran crn 5528  cres 5529  1-1wf1 6324  1-1-ontowf1o 6326  cfv 6327  (class class class)co 7129  cmpo 7131   Er wer 8260  [cec 8261   / cqs 8262  cen 8480  Fincfn 8483  Basecbs 16458  +gcplusg 16540  Grpcgrp 18078  invgcminusg 18079  -gcsg 18080  SubGrpcsubg 18248   ~QG cqg 18250
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2792  ax-rep 5162  ax-sep 5175  ax-nul 5182  ax-pow 5238  ax-pr 5302  ax-un 7435  ax-cnex 10567  ax-resscn 10568  ax-1cn 10569  ax-icn 10570  ax-addcl 10571  ax-addrcl 10572  ax-mulcl 10573  ax-mulrcl 10574  ax-mulcom 10575  ax-addass 10576  ax-mulass 10577  ax-distr 10578  ax-i2m1 10579  ax-1ne0 10580  ax-1rid 10581  ax-rnegex 10582  ax-rrecex 10583  ax-cnre 10584  ax-pre-lttri 10585  ax-pre-lttrn 10586  ax-pre-ltadd 10587  ax-pre-mulgt0 10588
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2653  df-clab 2799  df-cleq 2813  df-clel 2891  df-nfc 2959  df-ne 3007  df-nel 3111  df-ral 3130  df-rex 3131  df-reu 3132  df-rmo 3133  df-rab 3134  df-v 3472  df-sbc 3749  df-csb 3857  df-dif 3912  df-un 3914  df-in 3916  df-ss 3926  df-pss 3928  df-nul 4266  df-if 4440  df-pw 4513  df-sn 4540  df-pr 4542  df-tp 4544  df-op 4546  df-uni 4811  df-iun 4893  df-br 5039  df-opab 5101  df-mpt 5119  df-tr 5145  df-id 5432  df-eprel 5437  df-po 5446  df-so 5447  df-fr 5486  df-we 5488  df-xp 5533  df-rel 5534  df-cnv 5535  df-co 5536  df-dm 5537  df-rn 5538  df-res 5539  df-ima 5540  df-pred 6120  df-ord 6166  df-on 6167  df-lim 6168  df-suc 6169  df-iota 6286  df-fun 6329  df-fn 6330  df-f 6331  df-f1 6332  df-fo 6333  df-f1o 6334  df-fv 6335  df-riota 7087  df-ov 7132  df-oprab 7133  df-mpo 7134  df-om 7555  df-1st 7663  df-2nd 7664  df-wrecs 7921  df-recs 7982  df-rdg 8020  df-er 8263  df-ec 8265  df-qs 8269  df-en 8484  df-dom 8485  df-sdom 8486  df-fin 8487  df-pnf 10651  df-mnf 10652  df-xr 10653  df-ltxr 10654  df-le 10655  df-sub 10846  df-neg 10847  df-nn 11613  df-2 11675  df-ndx 16461  df-slot 16462  df-base 16464  df-sets 16465  df-ress 16466  df-plusg 16553  df-0g 16690  df-mgm 17827  df-sgrp 17876  df-mnd 17887  df-grp 18081  df-minusg 18082  df-sbg 18083  df-subg 18251  df-eqg 18253
This theorem is referenced by:  sylow2blem2  18721  sylow2blem3  18722
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