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Theorem cayleylem1 18532

Description: Lemma for cayley 18534. (Contributed by Paul Chapman, 3-Mar-2008.) (Revised by Mario Carneiro, 13-Jan-2015.)

**Hypotheses**
Ref	Expression
cayleylem1.x	⊢ 𝑋 = (Base‘𝐺)
cayleylem1.p	⊢ + = (+_g‘𝐺)
cayleylem1.u	⊢ 0 = (0_g‘𝐺)
cayleylem1.h	⊢ 𝐻 = (SymGrp‘𝑋)
cayleylem1.s	⊢ 𝑆 = (Base‘𝐻)
cayleylem1.f	⊢ 𝐹 = (𝑔 ∈ 𝑋 ↦ (𝑎 ∈ 𝑋 ↦ (𝑔 + 𝑎)))

**Assertion**
Ref	Expression
cayleylem1	⊢ (𝐺 ∈ Grp → 𝐹 ∈ (𝐺 GrpHom 𝐻))

Distinct variable groups: 𝑔,𝑎, + 𝐺,𝑎,𝑔 𝑔,𝐻 𝑋,𝑎,𝑔 0 ,𝑎 Allowed substitution hints: 𝑆(𝑔,𝑎) 𝐹(𝑔,𝑎) 𝐻(𝑎) 0 (𝑔)

Proof of Theorem cayleylem1 Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		cayleylem1.x	. . 3 ⊢ 𝑋 = (Base‘𝐺)
2		cayleylem1.p	. . 3 ⊢ + = (+_g‘𝐺)
3		eqid 2798	. . 3 ⊢ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦)) = (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦))
4	1, 2, 3	gaid2 18425	. 2 ⊢ (𝐺 ∈ Grp → (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦)) ∈ (𝐺 GrpAct 𝑋))
5		cayleylem1.h	. . 3 ⊢ 𝐻 = (SymGrp‘𝑋)
6		cayleylem1.f	. . . 4 ⊢ 𝐹 = (𝑔 ∈ 𝑋 ↦ (𝑎 ∈ 𝑋 ↦ (𝑔 + 𝑎)))
7		oveq12 7144	. . . . . . 7 ⊢ ((𝑥 = 𝑔 ∧ 𝑦 = 𝑎) → (𝑥 + 𝑦) = (𝑔 + 𝑎))
8		ovex 7168	. . . . . . 7 ⊢ (𝑔 + 𝑎) ∈ V
9	7, 3, 8	ovmpoa 7284	. . . . . 6 ⊢ ((𝑔 ∈ 𝑋 ∧ 𝑎 ∈ 𝑋) → (𝑔(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦))𝑎) = (𝑔 + 𝑎))
10	9	mpteq2dva 5125	. . . . 5 ⊢ (𝑔 ∈ 𝑋 → (𝑎 ∈ 𝑋 ↦ (𝑔(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦))𝑎)) = (𝑎 ∈ 𝑋 ↦ (𝑔 + 𝑎)))
11	10	mpteq2ia 5121	. . . 4 ⊢ (𝑔 ∈ 𝑋 ↦ (𝑎 ∈ 𝑋 ↦ (𝑔(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦))𝑎))) = (𝑔 ∈ 𝑋 ↦ (𝑎 ∈ 𝑋 ↦ (𝑔 + 𝑎)))
12	6, 11	eqtr4i 2824	. . 3 ⊢ 𝐹 = (𝑔 ∈ 𝑋 ↦ (𝑎 ∈ 𝑋 ↦ (𝑔(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦))𝑎)))
13	1, 5, 12	galactghm 18524	. 2 ⊢ ((𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦)) ∈ (𝐺 GrpAct 𝑋) → 𝐹 ∈ (𝐺 GrpHom 𝐻))
14	4, 13	syl 17	1 ⊢ (𝐺 ∈ Grp → 𝐹 ∈ (𝐺 GrpHom 𝐻))

Colors of variables: wff setvar class

Syntax hints: → wi 4 = wceq 1538 ∈ wcel 2111 ↦ cmpt 5110 ‘cfv 6324 (class class class)co 7135 ∈ cmpo 7137 Basecbs 16475 +_gcplusg 16557 0_gc0g 16705 Grpcgrp 18095 GrpHom cghm 18347 GrpAct cga 18411 SymGrpcsymg 18487

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603

This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-int 4839 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-1st 7671 df-2nd 7672 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-1o 8085 df-oadd 8089 df-er 8272 df-map 8391 df-en 8493 df-dom 8494 df-sdom 8495 df-fin 8496 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-nn 11626 df-2 11688 df-3 11689 df-4 11690 df-5 11691 df-6 11692 df-7 11693 df-8 11694 df-9 11695 df-n0 11886 df-z 11970 df-uz 12232 df-fz 12886 df-struct 16477 df-ndx 16478 df-slot 16479 df-base 16481 df-sets 16482 df-ress 16483 df-plusg 16570 df-tset 16576 df-0g 16707 df-mgm 17844 df-sgrp 17893 df-mnd 17904 df-efmnd 18026 df-grp 18098 df-minusg 18099 df-subg 18268 df-ghm 18348 df-ga 18412 df-symg 18488

This theorem is referenced by: cayleylem2 18533 cayley 18534

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