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Theorem psrgrp 21167
Description: The ring of power series is a group. (Contributed by Mario Carneiro, 29-Dec-2014.)
Hypotheses
Ref Expression
psrgrp.s 𝑆 = (𝐼 mPwSer 𝑅)
psrgrp.i (𝜑𝐼𝑉)
psrgrp.r (𝜑𝑅 ∈ Grp)
Assertion
Ref Expression
psrgrp (𝜑𝑆 ∈ Grp)

Proof of Theorem psrgrp
Dummy variables 𝑥 𝑠 𝑟 𝑡 𝑦 𝑧 𝑓 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqidd 2739 . 2 (𝜑 → (Base‘𝑆) = (Base‘𝑆))
2 eqidd 2739 . 2 (𝜑 → (+g𝑆) = (+g𝑆))
3 psrgrp.s . . 3 𝑆 = (𝐼 mPwSer 𝑅)
4 eqid 2738 . . 3 (Base‘𝑆) = (Base‘𝑆)
5 eqid 2738 . . 3 (+g𝑆) = (+g𝑆)
6 psrgrp.r . . . 4 (𝜑𝑅 ∈ Grp)
763ad2ant1 1132 . . 3 ((𝜑𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆)) → 𝑅 ∈ Grp)
8 simp2 1136 . . 3 ((𝜑𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆)) → 𝑥 ∈ (Base‘𝑆))
9 simp3 1137 . . 3 ((𝜑𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆)) → 𝑦 ∈ (Base‘𝑆))
103, 4, 5, 7, 8, 9psraddcl 21152 . 2 ((𝜑𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆)) → (𝑥(+g𝑆)𝑦) ∈ (Base‘𝑆))
11 ovex 7308 . . . . . . 7 (ℕ0m 𝐼) ∈ V
1211rabex 5256 . . . . . 6 {𝑓 ∈ (ℕ0m 𝐼) ∣ (𝑓 “ ℕ) ∈ Fin} ∈ V
1312a1i 11 . . . . 5 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → {𝑓 ∈ (ℕ0m 𝐼) ∣ (𝑓 “ ℕ) ∈ Fin} ∈ V)
14 eqid 2738 . . . . . 6 (Base‘𝑅) = (Base‘𝑅)
15 eqid 2738 . . . . . 6 {𝑓 ∈ (ℕ0m 𝐼) ∣ (𝑓 “ ℕ) ∈ Fin} = {𝑓 ∈ (ℕ0m 𝐼) ∣ (𝑓 “ ℕ) ∈ Fin}
16 simpr1 1193 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝑥 ∈ (Base‘𝑆))
173, 14, 15, 4, 16psrelbas 21148 . . . . 5 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝑥:{𝑓 ∈ (ℕ0m 𝐼) ∣ (𝑓 “ ℕ) ∈ Fin}⟶(Base‘𝑅))
18 simpr2 1194 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝑦 ∈ (Base‘𝑆))
193, 14, 15, 4, 18psrelbas 21148 . . . . 5 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝑦:{𝑓 ∈ (ℕ0m 𝐼) ∣ (𝑓 “ ℕ) ∈ Fin}⟶(Base‘𝑅))
20 simpr3 1195 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝑧 ∈ (Base‘𝑆))
213, 14, 15, 4, 20psrelbas 21148 . . . . 5 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝑧:{𝑓 ∈ (ℕ0m 𝐼) ∣ (𝑓 “ ℕ) ∈ Fin}⟶(Base‘𝑅))
226adantr 481 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → 𝑅 ∈ Grp)
23 eqid 2738 . . . . . . 7 (+g𝑅) = (+g𝑅)
2414, 23grpass 18586 . . . . . 6 ((𝑅 ∈ Grp ∧ (𝑟 ∈ (Base‘𝑅) ∧ 𝑠 ∈ (Base‘𝑅) ∧ 𝑡 ∈ (Base‘𝑅))) → ((𝑟(+g𝑅)𝑠)(+g𝑅)𝑡) = (𝑟(+g𝑅)(𝑠(+g𝑅)𝑡)))
2522, 24sylan 580 . . . . 5 (((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) ∧ (𝑟 ∈ (Base‘𝑅) ∧ 𝑠 ∈ (Base‘𝑅) ∧ 𝑡 ∈ (Base‘𝑅))) → ((𝑟(+g𝑅)𝑠)(+g𝑅)𝑡) = (𝑟(+g𝑅)(𝑠(+g𝑅)𝑡)))
2613, 17, 19, 21, 25caofass 7570 . . . 4 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → ((𝑥f (+g𝑅)𝑦) ∘f (+g𝑅)𝑧) = (𝑥f (+g𝑅)(𝑦f (+g𝑅)𝑧)))
273, 4, 23, 5, 16, 18psradd 21151 . . . . 5 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → (𝑥(+g𝑆)𝑦) = (𝑥f (+g𝑅)𝑦))
2827oveq1d 7290 . . . 4 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → ((𝑥(+g𝑆)𝑦) ∘f (+g𝑅)𝑧) = ((𝑥f (+g𝑅)𝑦) ∘f (+g𝑅)𝑧))
293, 4, 23, 5, 18, 20psradd 21151 . . . . 5 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → (𝑦(+g𝑆)𝑧) = (𝑦f (+g𝑅)𝑧))
3029oveq2d 7291 . . . 4 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → (𝑥f (+g𝑅)(𝑦(+g𝑆)𝑧)) = (𝑥f (+g𝑅)(𝑦f (+g𝑅)𝑧)))
3126, 28, 303eqtr4d 2788 . . 3 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → ((𝑥(+g𝑆)𝑦) ∘f (+g𝑅)𝑧) = (𝑥f (+g𝑅)(𝑦(+g𝑆)𝑧)))
32103adant3r3 1183 . . . 4 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → (𝑥(+g𝑆)𝑦) ∈ (Base‘𝑆))
333, 4, 23, 5, 32, 20psradd 21151 . . 3 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → ((𝑥(+g𝑆)𝑦)(+g𝑆)𝑧) = ((𝑥(+g𝑆)𝑦) ∘f (+g𝑅)𝑧))
343, 4, 5, 22, 18, 20psraddcl 21152 . . . 4 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → (𝑦(+g𝑆)𝑧) ∈ (Base‘𝑆))
353, 4, 23, 5, 16, 34psradd 21151 . . 3 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → (𝑥(+g𝑆)(𝑦(+g𝑆)𝑧)) = (𝑥f (+g𝑅)(𝑦(+g𝑆)𝑧)))
3631, 33, 353eqtr4d 2788 . 2 ((𝜑 ∧ (𝑥 ∈ (Base‘𝑆) ∧ 𝑦 ∈ (Base‘𝑆) ∧ 𝑧 ∈ (Base‘𝑆))) → ((𝑥(+g𝑆)𝑦)(+g𝑆)𝑧) = (𝑥(+g𝑆)(𝑦(+g𝑆)𝑧)))
37 psrgrp.i . . 3 (𝜑𝐼𝑉)
38 eqid 2738 . . 3 (0g𝑅) = (0g𝑅)
393, 37, 6, 15, 38, 4psr0cl 21163 . 2 (𝜑 → ({𝑓 ∈ (ℕ0m 𝐼) ∣ (𝑓 “ ℕ) ∈ Fin} × {(0g𝑅)}) ∈ (Base‘𝑆))
4037adantr 481 . . 3 ((𝜑𝑥 ∈ (Base‘𝑆)) → 𝐼𝑉)
416adantr 481 . . 3 ((𝜑𝑥 ∈ (Base‘𝑆)) → 𝑅 ∈ Grp)
42 simpr 485 . . 3 ((𝜑𝑥 ∈ (Base‘𝑆)) → 𝑥 ∈ (Base‘𝑆))
433, 40, 41, 15, 38, 4, 5, 42psr0lid 21164 . 2 ((𝜑𝑥 ∈ (Base‘𝑆)) → (({𝑓 ∈ (ℕ0m 𝐼) ∣ (𝑓 “ ℕ) ∈ Fin} × {(0g𝑅)})(+g𝑆)𝑥) = 𝑥)
44 eqid 2738 . . 3 (invg𝑅) = (invg𝑅)
453, 40, 41, 15, 44, 4, 42psrnegcl 21165 . 2 ((𝜑𝑥 ∈ (Base‘𝑆)) → ((invg𝑅) ∘ 𝑥) ∈ (Base‘𝑆))
463, 40, 41, 15, 44, 4, 42, 38, 5psrlinv 21166 . 2 ((𝜑𝑥 ∈ (Base‘𝑆)) → (((invg𝑅) ∘ 𝑥)(+g𝑆)𝑥) = ({𝑓 ∈ (ℕ0m 𝐼) ∣ (𝑓 “ ℕ) ∈ Fin} × {(0g𝑅)}))
471, 2, 10, 36, 39, 43, 45, 46isgrpd 18601 1 (𝜑𝑆 ∈ Grp)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 396  w3a 1086   = wceq 1539  wcel 2106  {crab 3068  Vcvv 3432  {csn 4561   × cxp 5587  ccnv 5588  cima 5592  ccom 5593  cfv 6433  (class class class)co 7275  f cof 7531  m cmap 8615  Fincfn 8733  cn 11973  0cn0 12233  Basecbs 16912  +gcplusg 16962  0gc0g 17150  Grpcgrp 18577  invgcminusg 18578   mPwSer cmps 21107
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 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-rep 5209  ax-sep 5223  ax-nul 5230  ax-pow 5288  ax-pr 5352  ax-un 7588  ax-cnex 10927  ax-resscn 10928  ax-1cn 10929  ax-icn 10930  ax-addcl 10931  ax-addrcl 10932  ax-mulcl 10933  ax-mulrcl 10934  ax-mulcom 10935  ax-addass 10936  ax-mulass 10937  ax-distr 10938  ax-i2m1 10939  ax-1ne0 10940  ax-1rid 10941  ax-rnegex 10942  ax-rrecex 10943  ax-cnre 10944  ax-pre-lttri 10945  ax-pre-lttrn 10946  ax-pre-ltadd 10947  ax-pre-mulgt0 10948
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-nel 3050  df-ral 3069  df-rex 3070  df-rmo 3071  df-reu 3072  df-rab 3073  df-v 3434  df-sbc 3717  df-csb 3833  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-pss 3906  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-tp 4566  df-op 4568  df-uni 4840  df-iun 4926  df-br 5075  df-opab 5137  df-mpt 5158  df-tr 5192  df-id 5489  df-eprel 5495  df-po 5503  df-so 5504  df-fr 5544  df-we 5546  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-pred 6202  df-ord 6269  df-on 6270  df-lim 6271  df-suc 6272  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-f1 6438  df-fo 6439  df-f1o 6440  df-fv 6441  df-riota 7232  df-ov 7278  df-oprab 7279  df-mpo 7280  df-of 7533  df-om 7713  df-1st 7831  df-2nd 7832  df-supp 7978  df-frecs 8097  df-wrecs 8128  df-recs 8202  df-rdg 8241  df-1o 8297  df-er 8498  df-map 8617  df-en 8734  df-dom 8735  df-sdom 8736  df-fin 8737  df-fsupp 9129  df-pnf 11011  df-mnf 11012  df-xr 11013  df-ltxr 11014  df-le 11015  df-sub 11207  df-neg 11208  df-nn 11974  df-2 12036  df-3 12037  df-4 12038  df-5 12039  df-6 12040  df-7 12041  df-8 12042  df-9 12043  df-n0 12234  df-z 12320  df-uz 12583  df-fz 13240  df-struct 16848  df-slot 16883  df-ndx 16895  df-base 16913  df-plusg 16975  df-mulr 16976  df-sca 16978  df-vsca 16979  df-tset 16981  df-0g 17152  df-mgm 18326  df-sgrp 18375  df-mnd 18386  df-grp 18580  df-minusg 18581  df-psr 21112
This theorem is referenced by:  psr0  21168  psrneg  21169  psrlmod  21170  psrring  21180  mplsubglem  21205
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