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Theorem psrring 21948

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 2737	. 2 ⊢ (𝜑 → (Base‘𝑆) = (Base‘𝑆))
2		eqidd 2737	. 2 ⊢ (𝜑 → (+_g‘𝑆) = (+_g‘𝑆))
3		eqidd 2737	. 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 20219	. . . 4 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ Grp)
8	6, 7	syl 17	. . 3 ⊢ (𝜑 → 𝑅 ∈ Grp)
9	4, 5, 8	psrgrp 21935	. 2 ⊢ (𝜑 → 𝑆 ∈ Grp)
10		eqid 2736	. . 3 ⊢ (Base‘𝑆) = (Base‘𝑆)
11		eqid 2736	. . 3 ⊢ (._r‘𝑆) = (._r‘𝑆)
12	6	3ad2ant1 1134	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆)) → 𝑅 ∈ Ring)
13		simp2 1138	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆)) → 𝑥 ∈ (Base‘𝑆))
14		simp3 1139	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆)) → 𝑦 ∈ (Base‘𝑆))
15	4, 10, 11, 12, 13, 14	psrmulcl 21925	. 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 2736	. . 3 ⊢ {𝑓 ∈ (ℕ₀ ↑_m 𝐼) ∣ (^◡𝑓 “ ℕ) ∈ Fin} = {𝑓 ∈ (ℕ₀ ↑_m 𝐼) ∣ (^◡𝑓 “ ℕ) ∈ Fin}
19		simpr1 1196	. . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝑥 ∈ (Base‘𝑆))
20		simpr2 1197	. . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝑦 ∈ (Base‘𝑆))
21		simpr3 1198	. . 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 21942	. 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 2736	. . 3 ⊢ (+_g‘𝑆) = (+_g‘𝑆)
24	4, 16, 17, 18, 11, 10, 19, 20, 21, 23	psrdi 21943	. 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 21944	. 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 2736	. . 3 ⊢ (0_g‘𝑅) = (0_g‘𝑅)
27		eqid 2736	. . 3 ⊢ (1_r‘𝑅) = (1_r‘𝑅)
28		eqid 2736	. . 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 21939	. 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 21940	. 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 21941	. 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 20272	1 ⊢ (𝜑 → 𝑆 ∈ Ring)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 {crab 3389 ifcif 4466 {csn 4567 ↦ cmpt 5166 × cxp 5629 ^◡ccnv 5630 “ cima 5634 ‘cfv 6498 (class class class)co 7367 ↑_m cmap 8773 Fincfn 8893 0cc0 11038 ℕcn 12174 ℕ₀cn0 12437 Basecbs 17179 +_gcplusg 17220 ._rcmulr 17221 0_gc0g 17402 Grpcgrp 18909 1_rcur 20162 Ringcrg 20214 mPwSer cmps 21884

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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115

This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-rmo 3342 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4851 df-int 4890 df-iun 4935 df-iin 4936 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-se 5585 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-isom 6507 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-of 7631 df-ofr 7632 df-om 7818 df-1st 7942 df-2nd 7943 df-supp 8111 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-1o 8405 df-2o 8406 df-er 8643 df-map 8775 df-pm 8776 df-ixp 8846 df-en 8894 df-dom 8895 df-sdom 8896 df-fin 8897 df-fsupp 9275 df-sup 9355 df-oi 9425 df-card 9863 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-nn 12175 df-2 12244 df-3 12245 df-4 12246 df-5 12247 df-6 12248 df-7 12249 df-8 12250 df-9 12251 df-n0 12438 df-z 12525 df-dec 12645 df-uz 12789 df-fz 13462 df-fzo 13609 df-seq 13964 df-hash 14293 df-struct 17117 df-sets 17134 df-slot 17152 df-ndx 17164 df-base 17180 df-ress 17201 df-plusg 17233 df-mulr 17234 df-sca 17236 df-vsca 17237 df-ip 17238 df-tset 17239 df-ple 17240 df-ds 17242 df-hom 17244 df-cco 17245 df-0g 17404 df-gsum 17405 df-prds 17410 df-pws 17412 df-mre 17548 df-mrc 17549 df-acs 17551 df-mgm 18608 df-sgrp 18687 df-mnd 18703 df-mhm 18751 df-submnd 18752 df-grp 18912 df-minusg 18913 df-mulg 19044 df-ghm 19188 df-cntz 19292 df-cmn 19757 df-abl 19758 df-mgp 20122 df-rng 20134 df-ur 20163 df-ring 20216 df-psr 21889

This theorem is referenced by: psr1 21949 psrcrng 21950 psrassa 21951 subrgpsr 21956 psrascl 21957 psrasclcl 21958 mplsubrg 21983 psdascl 22134 opsrring 22208 psrgsum 33692 mplmonprod 33698 rhmpsr 42995

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