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Theorem prdsidlem 18657

Description: Characterization of identity in a structure product. (Contributed by Mario Carneiro, 10-Jan-2015.)

**Hypotheses**
Ref	Expression
prdsplusgcl.y	⊢ 𝑌 = (𝑆X_s𝑅)
prdsplusgcl.b	⊢ 𝐵 = (Base‘𝑌)
prdsplusgcl.p	⊢ + = (+_g‘𝑌)
prdsplusgcl.s	⊢ (𝜑 → 𝑆 ∈ 𝑉)
prdsplusgcl.i	⊢ (𝜑 → 𝐼 ∈ 𝑊)
prdsplusgcl.r	⊢ (𝜑 → 𝑅:𝐼⟶Mnd)
prdsidlem.z	⊢ 0 = (0_g ∘ 𝑅)

**Assertion**
Ref	Expression
prdsidlem	⊢ (𝜑 → ( 0 ∈ 𝐵 ∧ ∀𝑥 ∈ 𝐵 (( 0 + 𝑥) = 𝑥 ∧ (𝑥 + 0 ) = 𝑥)))

Distinct variable groups: 𝑥, + 𝑥,𝐵 𝑥,𝐼 𝑥,𝑅 𝜑,𝑥 𝑥,𝑆 𝑥,𝑉 𝑥,𝑊 𝑥,𝑌 Allowed substitution hint: 0 (𝑥)

Proof of Theorem prdsidlem Dummy variable 𝑦 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		prdsidlem.z	. . . 4 ⊢ 0 = (0_g ∘ 𝑅)
2		fvexd 6907	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐼) → (𝑅‘𝑦) ∈ V)
3		prdsplusgcl.r	. . . . . 6 ⊢ (𝜑 → 𝑅:𝐼⟶Mnd)
4	3	feqmptd 6961	. . . . 5 ⊢ (𝜑 → 𝑅 = (𝑦 ∈ 𝐼 ↦ (𝑅‘𝑦)))
5		fn0g 18582	. . . . . . 7 ⊢ 0_g Fn V
6	5	a1i 11	. . . . . 6 ⊢ (𝜑 → 0_g Fn V)
7		dffn5 6951	. . . . . 6 ⊢ (0_g Fn V ↔ 0_g = (𝑥 ∈ V ↦ (0_g‘𝑥)))
8	6, 7	sylib 217	. . . . 5 ⊢ (𝜑 → 0_g = (𝑥 ∈ V ↦ (0_g‘𝑥)))
9		fveq2 6892	. . . . 5 ⊢ (𝑥 = (𝑅‘𝑦) → (0_g‘𝑥) = (0_g‘(𝑅‘𝑦)))
10	2, 4, 8, 9	fmptco 7127	. . . 4 ⊢ (𝜑 → (0_g ∘ 𝑅) = (𝑦 ∈ 𝐼 ↦ (0_g‘(𝑅‘𝑦))))
11	1, 10	eqtrid 2785	. . 3 ⊢ (𝜑 → 0 = (𝑦 ∈ 𝐼 ↦ (0_g‘(𝑅‘𝑦))))
12	3	ffvelcdmda 7087	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐼) → (𝑅‘𝑦) ∈ Mnd)
13		eqid 2733	. . . . . . 7 ⊢ (Base‘(𝑅‘𝑦)) = (Base‘(𝑅‘𝑦))
14		eqid 2733	. . . . . . 7 ⊢ (0_g‘(𝑅‘𝑦)) = (0_g‘(𝑅‘𝑦))
15	13, 14	mndidcl 18640	. . . . . 6 ⊢ ((𝑅‘𝑦) ∈ Mnd → (0_g‘(𝑅‘𝑦)) ∈ (Base‘(𝑅‘𝑦)))
16	12, 15	syl 17	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐼) → (0_g‘(𝑅‘𝑦)) ∈ (Base‘(𝑅‘𝑦)))
17	16	ralrimiva 3147	. . . 4 ⊢ (𝜑 → ∀𝑦 ∈ 𝐼 (0_g‘(𝑅‘𝑦)) ∈ (Base‘(𝑅‘𝑦)))
18		prdsplusgcl.y	. . . . 5 ⊢ 𝑌 = (𝑆X_s𝑅)
19		prdsplusgcl.b	. . . . 5 ⊢ 𝐵 = (Base‘𝑌)
20		prdsplusgcl.s	. . . . 5 ⊢ (𝜑 → 𝑆 ∈ 𝑉)
21		prdsplusgcl.i	. . . . 5 ⊢ (𝜑 → 𝐼 ∈ 𝑊)
22	3	ffnd 6719	. . . . 5 ⊢ (𝜑 → 𝑅 Fn 𝐼)
23	18, 19, 20, 21, 22	prdsbasmpt 17416	. . . 4 ⊢ (𝜑 → ((𝑦 ∈ 𝐼 ↦ (0_g‘(𝑅‘𝑦))) ∈ 𝐵 ↔ ∀𝑦 ∈ 𝐼 (0_g‘(𝑅‘𝑦)) ∈ (Base‘(𝑅‘𝑦))))
24	17, 23	mpbird 257	. . 3 ⊢ (𝜑 → (𝑦 ∈ 𝐼 ↦ (0_g‘(𝑅‘𝑦))) ∈ 𝐵)
25	11, 24	eqeltrd 2834	. 2 ⊢ (𝜑 → 0 ∈ 𝐵)
26	1	fveq1i 6893	. . . . . . . . . 10 ⊢ ( 0 ‘𝑦) = ((0_g ∘ 𝑅)‘𝑦)
27		fvco2 6989	. . . . . . . . . . 11 ⊢ ((𝑅 Fn 𝐼 ∧ 𝑦 ∈ 𝐼) → ((0_g ∘ 𝑅)‘𝑦) = (0_g‘(𝑅‘𝑦)))
28	22, 27	sylan 581	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐼) → ((0_g ∘ 𝑅)‘𝑦) = (0_g‘(𝑅‘𝑦)))
29	26, 28	eqtrid 2785	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐼) → ( 0 ‘𝑦) = (0_g‘(𝑅‘𝑦)))
30	29	adantlr 714	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → ( 0 ‘𝑦) = (0_g‘(𝑅‘𝑦)))
31	30	oveq1d 7424	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → (( 0 ‘𝑦)(+_g‘(𝑅‘𝑦))(𝑥‘𝑦)) = ((0_g‘(𝑅‘𝑦))(+_g‘(𝑅‘𝑦))(𝑥‘𝑦)))
32	3	adantr 482	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑅:𝐼⟶Mnd)
33	32	ffvelcdmda 7087	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → (𝑅‘𝑦) ∈ Mnd)
34	20	ad2antrr 725	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → 𝑆 ∈ 𝑉)
35	21	ad2antrr 725	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → 𝐼 ∈ 𝑊)
36	22	ad2antrr 725	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → 𝑅 Fn 𝐼)
37		simplr 768	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → 𝑥 ∈ 𝐵)
38		simpr 486	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → 𝑦 ∈ 𝐼)
39	18, 19, 34, 35, 36, 37, 38	prdsbasprj 17418	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → (𝑥‘𝑦) ∈ (Base‘(𝑅‘𝑦)))
40		eqid 2733	. . . . . . . . 9 ⊢ (+_g‘(𝑅‘𝑦)) = (+_g‘(𝑅‘𝑦))
41	13, 40, 14	mndlid 18645	. . . . . . . 8 ⊢ (((𝑅‘𝑦) ∈ Mnd ∧ (𝑥‘𝑦) ∈ (Base‘(𝑅‘𝑦))) → ((0_g‘(𝑅‘𝑦))(+_g‘(𝑅‘𝑦))(𝑥‘𝑦)) = (𝑥‘𝑦))
42	33, 39, 41	syl2anc 585	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → ((0_g‘(𝑅‘𝑦))(+_g‘(𝑅‘𝑦))(𝑥‘𝑦)) = (𝑥‘𝑦))
43	31, 42	eqtrd 2773	. . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → (( 0 ‘𝑦)(+_g‘(𝑅‘𝑦))(𝑥‘𝑦)) = (𝑥‘𝑦))
44	43	mpteq2dva 5249	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝑦 ∈ 𝐼 ↦ (( 0 ‘𝑦)(+_g‘(𝑅‘𝑦))(𝑥‘𝑦))) = (𝑦 ∈ 𝐼 ↦ (𝑥‘𝑦)))
45	20	adantr 482	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑆 ∈ 𝑉)
46	21	adantr 482	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐼 ∈ 𝑊)
47	22	adantr 482	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑅 Fn 𝐼)
48	25	adantr 482	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 0 ∈ 𝐵)
49		simpr 486	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑥 ∈ 𝐵)
50		prdsplusgcl.p	. . . . . 6 ⊢ + = (+_g‘𝑌)
51	18, 19, 45, 46, 47, 48, 49, 50	prdsplusgval 17419	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ( 0 + 𝑥) = (𝑦 ∈ 𝐼 ↦ (( 0 ‘𝑦)(+_g‘(𝑅‘𝑦))(𝑥‘𝑦))))
52	18, 19, 45, 46, 47, 49	prdsbasfn 17417	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑥 Fn 𝐼)
53		dffn5 6951	. . . . . 6 ⊢ (𝑥 Fn 𝐼 ↔ 𝑥 = (𝑦 ∈ 𝐼 ↦ (𝑥‘𝑦)))
54	52, 53	sylib 217	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑥 = (𝑦 ∈ 𝐼 ↦ (𝑥‘𝑦)))
55	44, 51, 54	3eqtr4d 2783	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ( 0 + 𝑥) = 𝑥)
56	30	oveq2d 7425	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → ((𝑥‘𝑦)(+_g‘(𝑅‘𝑦))( 0 ‘𝑦)) = ((𝑥‘𝑦)(+_g‘(𝑅‘𝑦))(0_g‘(𝑅‘𝑦))))
57	13, 40, 14	mndrid 18646	. . . . . . . 8 ⊢ (((𝑅‘𝑦) ∈ Mnd ∧ (𝑥‘𝑦) ∈ (Base‘(𝑅‘𝑦))) → ((𝑥‘𝑦)(+_g‘(𝑅‘𝑦))(0_g‘(𝑅‘𝑦))) = (𝑥‘𝑦))
58	33, 39, 57	syl2anc 585	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → ((𝑥‘𝑦)(+_g‘(𝑅‘𝑦))(0_g‘(𝑅‘𝑦))) = (𝑥‘𝑦))
59	56, 58	eqtrd 2773	. . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐼) → ((𝑥‘𝑦)(+_g‘(𝑅‘𝑦))( 0 ‘𝑦)) = (𝑥‘𝑦))
60	59	mpteq2dva 5249	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝑦 ∈ 𝐼 ↦ ((𝑥‘𝑦)(+_g‘(𝑅‘𝑦))( 0 ‘𝑦))) = (𝑦 ∈ 𝐼 ↦ (𝑥‘𝑦)))
61	18, 19, 45, 46, 47, 49, 48, 50	prdsplusgval 17419	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝑥 + 0 ) = (𝑦 ∈ 𝐼 ↦ ((𝑥‘𝑦)(+_g‘(𝑅‘𝑦))( 0 ‘𝑦))))
62	60, 61, 54	3eqtr4d 2783	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝑥 + 0 ) = 𝑥)
63	55, 62	jca 513	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (( 0 + 𝑥) = 𝑥 ∧ (𝑥 + 0 ) = 𝑥))
64	63	ralrimiva 3147	. 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐵 (( 0 + 𝑥) = 𝑥 ∧ (𝑥 + 0 ) = 𝑥))
65	25, 64	jca 513	1 ⊢ (𝜑 → ( 0 ∈ 𝐵 ∧ ∀𝑥 ∈ 𝐵 (( 0 + 𝑥) = 𝑥 ∧ (𝑥 + 0 ) = 𝑥)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 397 = wceq 1542 ∈ wcel 2107 ∀wral 3062 Vcvv 3475 ↦ cmpt 5232 ∘ ccom 5681 Fn wfn 6539 ⟶wf 6540 ‘cfv 6544 (class class class)co 7409 Basecbs 17144 +_gcplusg 17197 0_gc0g 17385 X_scprds 17391 Mndcmnd 18625

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7725 ax-cnex 11166 ax-resscn 11167 ax-1cn 11168 ax-icn 11169 ax-addcl 11170 ax-addrcl 11171 ax-mulcl 11172 ax-mulrcl 11173 ax-mulcom 11174 ax-addass 11175 ax-mulass 11176 ax-distr 11177 ax-i2m1 11178 ax-1ne0 11179 ax-1rid 11180 ax-rnegex 11181 ax-rrecex 11182 ax-cnre 11183 ax-pre-lttri 11184 ax-pre-lttrn 11185 ax-pre-ltadd 11186 ax-pre-mulgt0 11187

This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3377 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-tp 4634 df-op 4636 df-uni 4910 df-iun 5000 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-pred 6301 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6496 df-fun 6546 df-fn 6547 df-f 6548 df-f1 6549 df-fo 6550 df-f1o 6551 df-fv 6552 df-riota 7365 df-ov 7412 df-oprab 7413 df-mpo 7414 df-om 7856 df-1st 7975 df-2nd 7976 df-frecs 8266 df-wrecs 8297 df-recs 8371 df-rdg 8410 df-1o 8466 df-er 8703 df-map 8822 df-ixp 8892 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-sup 9437 df-pnf 11250 df-mnf 11251 df-xr 11252 df-ltxr 11253 df-le 11254 df-sub 11446 df-neg 11447 df-nn 12213 df-2 12275 df-3 12276 df-4 12277 df-5 12278 df-6 12279 df-7 12280 df-8 12281 df-9 12282 df-n0 12473 df-z 12559 df-dec 12678 df-uz 12823 df-fz 13485 df-struct 17080 df-slot 17115 df-ndx 17127 df-base 17145 df-plusg 17210 df-mulr 17211 df-sca 17213 df-vsca 17214 df-ip 17215 df-tset 17216 df-ple 17217 df-ds 17219 df-hom 17221 df-cco 17222 df-0g 17387 df-prds 17393 df-mgm 18561 df-sgrp 18610 df-mnd 18626

This theorem is referenced by: prdsmndd 18658 prds0g 18659

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