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Theorem cayleylem1 19452

Description: Lemma for cayley 19454. (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 2762	. . 3 ⊢ (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦)) = (𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦))
4	1, 2, 3	gaid2 19343	. 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 7405	. . . . . . 7 ⊢ ((𝑥 = 𝑔 ∧ 𝑦 = 𝑎) → (𝑥 + 𝑦) = (𝑔 + 𝑎))
8		ovex 7429	. . . . . . 7 ⊢ (𝑔 + 𝑎) ∈ V
9	7, 3, 8	ovmpoa 7551	. . . . . 6 ⊢ ((𝑔 ∈ 𝑋 ∧ 𝑎 ∈ 𝑋) → (𝑔(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦))𝑎) = (𝑔 + 𝑎))
10	9	mpteq2dva 5193	. . . . 5 ⊢ (𝑔 ∈ 𝑋 → (𝑎 ∈ 𝑋 ↦ (𝑔(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦))𝑎)) = (𝑎 ∈ 𝑋 ↦ (𝑔 + 𝑎)))
11	10	mpteq2ia 5195	. . . 4 ⊢ (𝑔 ∈ 𝑋 ↦ (𝑎 ∈ 𝑋 ↦ (𝑔(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦))𝑎))) = (𝑔 ∈ 𝑋 ↦ (𝑎 ∈ 𝑋 ↦ (𝑔 + 𝑎)))
12	6, 11	eqtr4i 2788	. . 3 ⊢ 𝐹 = (𝑔 ∈ 𝑋 ↦ (𝑎 ∈ 𝑋 ↦ (𝑔(𝑥 ∈ 𝑋, 𝑦 ∈ 𝑋 ↦ (𝑥 + 𝑦))𝑎)))
13	1, 5, 12	galactghm 19444	. 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 1560 ∈ wcel 2142 ↦ cmpt 5181 ‘cfv 6521 (class class class)co 7396 ∈ cmpo 7398 Basecbs 17245 +_gcplusg 17286 0_gc0g 17468 Grpcgrp 18975 GrpHom cghm 19253 GrpAct cga 19329 SymGrpcsymg 19409

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5227 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-cnex 11129 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 ax-pre-mulgt0 11150

This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-tp 4587 df-op 4589 df-uni 4866 df-iun 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-1st 7970 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-1o 8437 df-er 8678 df-map 8810 df-en 8928 df-dom 8929 df-sdom 8930 df-fin 8931 df-pnf 11218 df-mnf 11219 df-xr 11220 df-ltxr 11221 df-le 11222 df-sub 11416 df-neg 11417 df-nn 12211 df-2 12280 df-3 12281 df-4 12282 df-5 12283 df-6 12284 df-7 12285 df-8 12286 df-9 12287 df-n0 12482 df-z 12569 df-uz 12840 df-fz 13513 df-struct 17183 df-sets 17200 df-slot 17218 df-ndx 17230 df-base 17246 df-ress 17267 df-plusg 17299 df-tset 17305 df-0g 17470 df-mgm 18674 df-sgrp 18753 df-mnd 18769 df-efmnd 18903 df-grp 18978 df-minusg 18979 df-subg 19165 df-ghm 19254 df-ga 19330 df-symg 19410

This theorem is referenced by: cayleylem2 19453 cayley 19454

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