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Theorem psrring 21905

Description: The ring of power series is a ring. (Contributed by Mario Carneiro, 29-Dec-2014.)

**Hypotheses**
Ref	Expression
psrring.s	⊢ 𝑆 = (𝐼 mPwSer 𝑅)
psrring.i	⊢ (𝜑 → 𝐼 ∈ 𝑉)
psrring.r	⊢ (𝜑 → 𝑅 ∈ Ring)

**Assertion**
Ref	Expression
psrring	⊢ (𝜑 → 𝑆 ∈ Ring)

Proof of Theorem psrring Dummy variables 𝑥 𝑓 𝑦 𝑧 𝑟 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqidd 2732	. 2 ⊢ (𝜑 → (Base‘𝑆) = (Base‘𝑆))
2		eqidd 2732	. 2 ⊢ (𝜑 → (+_g‘𝑆) = (+_g‘𝑆))
3		eqidd 2732	. 2 ⊢ (𝜑 → (._r‘𝑆) = (._r‘𝑆))
4		psrring.s	. . 3 ⊢ 𝑆 = (𝐼 mPwSer 𝑅)
5		psrring.i	. . 3 ⊢ (𝜑 → 𝐼 ∈ 𝑉)
6		psrring.r	. . . 4 ⊢ (𝜑 → 𝑅 ∈ Ring)
7		ringgrp 20154	. . . 4 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ Grp)
8	6, 7	syl 17	. . 3 ⊢ (𝜑 → 𝑅 ∈ Grp)
9	4, 5, 8	psrgrp 21891	. 2 ⊢ (𝜑 → 𝑆 ∈ Grp)
10		eqid 2731	. . 3 ⊢ (Base‘𝑆) = (Base‘𝑆)
11		eqid 2731	. . 3 ⊢ (._r‘𝑆) = (._r‘𝑆)
12	6	3ad2ant1 1133	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆)) → 𝑅 ∈ Ring)
13		simp2 1137	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆)) → 𝑥 ∈ (Base‘𝑆))
14		simp3 1138	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆)) → 𝑦 ∈ (Base‘𝑆))
15	4, 10, 11, 12, 13, 14	psrmulcl 21881	. 2 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆)) → (𝑥(._r‘𝑆)𝑦) ∈ (Base‘𝑆))
16	5	adantr 480	. . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝐼 ∈ 𝑉)
17	6	adantr 480	. . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝑅 ∈ Ring)
18		eqid 2731	. . 3 ⊢ {𝑓 ∈ (ℕ₀ ↑_m 𝐼) ∣ (^◡𝑓 “ ℕ) ∈ Fin} = {𝑓 ∈ (ℕ₀ ↑_m 𝐼) ∣ (^◡𝑓 “ ℕ) ∈ Fin}
19		simpr1 1195	. . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝑥 ∈ (Base‘𝑆))
20		simpr2 1196	. . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝑦 ∈ (Base‘𝑆))
21		simpr3 1197	. . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝑧 ∈ (Base‘𝑆))
22	4, 16, 17, 18, 11, 10, 19, 20, 21	psrass1 21899	. 2 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → ((𝑥(._r‘𝑆)𝑦)(._r‘𝑆)𝑧) = (𝑥(._r‘𝑆)(𝑦(._r‘𝑆)𝑧)))
23		eqid 2731	. . 3 ⊢ (+_g‘𝑆) = (+_g‘𝑆)
24	4, 16, 17, 18, 11, 10, 19, 20, 21, 23	psrdi 21900	. 2 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → (𝑥(._r‘𝑆)(𝑦(+_g‘𝑆)𝑧)) = ((𝑥(._r‘𝑆)𝑦)(+_g‘𝑆)(𝑥(._r‘𝑆)𝑧)))
25	4, 16, 17, 18, 11, 10, 19, 20, 21, 23	psrdir 21901	. 2 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → ((𝑥(+_g‘𝑆)𝑦)(._r‘𝑆)𝑧) = ((𝑥(._r‘𝑆)𝑧)(+_g‘𝑆)(𝑦(._r‘𝑆)𝑧)))
26		eqid 2731	. . 3 ⊢ (0_g‘𝑅) = (0_g‘𝑅)
27		eqid 2731	. . 3 ⊢ (1_r‘𝑅) = (1_r‘𝑅)
28		eqid 2731	. . 3 ⊢ (𝑟 ∈ {𝑓 ∈ (ℕ₀ ↑_m 𝐼) ∣ (^◡𝑓 “ ℕ) ∈ Fin} ↦ if(𝑟 = (𝐼 × {0}), (1_r‘𝑅), (0_g‘𝑅))) = (𝑟 ∈ {𝑓 ∈ (ℕ₀ ↑_m 𝐼) ∣ (^◡𝑓 “ ℕ) ∈ Fin} ↦ if(𝑟 = (𝐼 × {0}), (1_r‘𝑅), (0_g‘𝑅)))
29	4, 5, 6, 18, 26, 27, 28, 10	psr1cl 21896	. 2 ⊢ (𝜑 → (𝑟 ∈ {𝑓 ∈ (ℕ₀ ↑_m 𝐼) ∣ (^◡𝑓 “ ℕ) ∈ Fin} ↦ if(𝑟 = (𝐼 × {0}), (1_r‘𝑅), (0_g‘𝑅))) ∈ (Base‘𝑆))
30	5	adantr 480	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑆)) → 𝐼 ∈ 𝑉)
31	6	adantr 480	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑆)) → 𝑅 ∈ Ring)
32		simpr 484	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑆)) → 𝑥 ∈ (Base‘𝑆))
33	4, 30, 31, 18, 26, 27, 28, 10, 11, 32	psrlidm 21897	. 2 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑆)) → ((𝑟 ∈ {𝑓 ∈ (ℕ₀ ↑_m 𝐼) ∣ (^◡𝑓 “ ℕ) ∈ Fin} ↦ if(𝑟 = (𝐼 × {0}), (1_r‘𝑅), (0_g‘𝑅)))(._r‘𝑆)𝑥) = 𝑥)
34	4, 30, 31, 18, 26, 27, 28, 10, 11, 32	psrridm 21898	. 2 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑆)) → (𝑥(._r‘𝑆)(𝑟 ∈ {𝑓 ∈ (ℕ₀ ↑_m 𝐼) ∣ (^◡𝑓 “ ℕ) ∈ Fin} ↦ if(𝑟 = (𝐼 × {0}), (1_r‘𝑅), (0_g‘𝑅)))) = 𝑥)
35	1, 2, 3, 9, 15, 22, 24, 25, 29, 33, 34	isringd 20207	1 ⊢ (𝜑 → 𝑆 ∈ Ring)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1541 ∈ wcel 2111 {crab 3395 ifcif 4475 {csn 4576 ↦ cmpt 5172 × cxp 5614 ^◡ccnv 5615 “ cima 5619 ‘cfv 6481 (class class class)co 7346 ↑_m cmap 8750 Fincfn 8869 0cc0 11003 ℕcn 12122 ℕ₀cn0 12378 Basecbs 17117 +_gcplusg 17158 ._rcmulr 17159 0_gc0g 17340 Grpcgrp 18843 1_rcur 20097 Ringcrg 20149 mPwSer cmps 21839

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 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-rep 5217 ax-sep 5234 ax-nul 5244 ax-pow 5303 ax-pr 5370 ax-un 7668 ax-cnex 11059 ax-resscn 11060 ax-1cn 11061 ax-icn 11062 ax-addcl 11063 ax-addrcl 11064 ax-mulcl 11065 ax-mulrcl 11066 ax-mulcom 11067 ax-addass 11068 ax-mulass 11069 ax-distr 11070 ax-i2m1 11071 ax-1ne0 11072 ax-1rid 11073 ax-rnegex 11074 ax-rrecex 11075 ax-cnre 11076 ax-pre-lttri 11077 ax-pre-lttrn 11078 ax-pre-ltadd 11079 ax-pre-mulgt0 11080

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-rmo 3346 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4284 df-if 4476 df-pw 4552 df-sn 4577 df-pr 4579 df-tp 4581 df-op 4583 df-uni 4860 df-int 4898 df-iun 4943 df-iin 4944 df-br 5092 df-opab 5154 df-mpt 5173 df-tr 5199 df-id 5511 df-eprel 5516 df-po 5524 df-so 5525 df-fr 5569 df-se 5570 df-we 5571 df-xp 5622 df-rel 5623 df-cnv 5624 df-co 5625 df-dm 5626 df-rn 5627 df-res 5628 df-ima 5629 df-pred 6248 df-ord 6309 df-on 6310 df-lim 6311 df-suc 6312 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-isom 6490 df-riota 7303 df-ov 7349 df-oprab 7350 df-mpo 7351 df-of 7610 df-ofr 7611 df-om 7797 df-1st 7921 df-2nd 7922 df-supp 8091 df-frecs 8211 df-wrecs 8242 df-recs 8291 df-rdg 8329 df-1o 8385 df-2o 8386 df-er 8622 df-map 8752 df-pm 8753 df-ixp 8822 df-en 8870 df-dom 8871 df-sdom 8872 df-fin 8873 df-fsupp 9246 df-sup 9326 df-oi 9396 df-card 9829 df-pnf 11145 df-mnf 11146 df-xr 11147 df-ltxr 11148 df-le 11149 df-sub 11343 df-neg 11344 df-nn 12123 df-2 12185 df-3 12186 df-4 12187 df-5 12188 df-6 12189 df-7 12190 df-8 12191 df-9 12192 df-n0 12379 df-z 12466 df-dec 12586 df-uz 12730 df-fz 13405 df-fzo 13552 df-seq 13906 df-hash 14235 df-struct 17055 df-sets 17072 df-slot 17090 df-ndx 17102 df-base 17118 df-ress 17139 df-plusg 17171 df-mulr 17172 df-sca 17174 df-vsca 17175 df-ip 17176 df-tset 17177 df-ple 17178 df-ds 17180 df-hom 17182 df-cco 17183 df-0g 17342 df-gsum 17343 df-prds 17348 df-pws 17350 df-mre 17485 df-mrc 17486 df-acs 17488 df-mgm 18545 df-sgrp 18624 df-mnd 18640 df-mhm 18688 df-submnd 18689 df-grp 18846 df-minusg 18847 df-mulg 18978 df-ghm 19123 df-cntz 19227 df-cmn 19692 df-abl 19693 df-mgp 20057 df-rng 20069 df-ur 20098 df-ring 20151 df-psr 21844

This theorem is referenced by: psr1 21906 psrcrng 21907 psrassa 21908 subrgpsr 21913 psrascl 21914 psrasclcl 21915 mplsubrg 21940 psdascl 22081 opsrring 22155 rhmpsr 42584

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