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Theorem oppr1g 14094
Description: Multiplicative identity of an opposite ring. (Contributed by Mario Carneiro, 1-Dec-2014.)
Hypotheses
Ref Expression
opprbas.1 𝑂 = (oppr𝑅)
oppr1.2 1 = (1r𝑅)
Assertion
Ref Expression
oppr1g (𝑅𝑉1 = (1r𝑂))

Proof of Theorem oppr1g
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqid 2231 . . . . . . . . . . 11 (Base‘𝑅) = (Base‘𝑅)
2 eqid 2231 . . . . . . . . . . 11 (.r𝑅) = (.r𝑅)
3 opprbas.1 . . . . . . . . . . 11 𝑂 = (oppr𝑅)
4 eqid 2231 . . . . . . . . . . 11 (.r𝑂) = (.r𝑂)
51, 2, 3, 4opprmulg 14083 . . . . . . . . . 10 ((𝑅𝑉𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅)) → (𝑥(.r𝑂)𝑦) = (𝑦(.r𝑅)𝑥))
653expa 1229 . . . . . . . . 9 (((𝑅𝑉𝑥 ∈ (Base‘𝑅)) ∧ 𝑦 ∈ (Base‘𝑅)) → (𝑥(.r𝑂)𝑦) = (𝑦(.r𝑅)𝑥))
76eqeq1d 2240 . . . . . . . 8 (((𝑅𝑉𝑥 ∈ (Base‘𝑅)) ∧ 𝑦 ∈ (Base‘𝑅)) → ((𝑥(.r𝑂)𝑦) = 𝑦 ↔ (𝑦(.r𝑅)𝑥) = 𝑦))
8 simpll 527 . . . . . . . . . 10 (((𝑅𝑉𝑥 ∈ (Base‘𝑅)) ∧ 𝑦 ∈ (Base‘𝑅)) → 𝑅𝑉)
9 simpr 110 . . . . . . . . . 10 (((𝑅𝑉𝑥 ∈ (Base‘𝑅)) ∧ 𝑦 ∈ (Base‘𝑅)) → 𝑦 ∈ (Base‘𝑅))
10 simplr 529 . . . . . . . . . 10 (((𝑅𝑉𝑥 ∈ (Base‘𝑅)) ∧ 𝑦 ∈ (Base‘𝑅)) → 𝑥 ∈ (Base‘𝑅))
111, 2, 3, 4opprmulg 14083 . . . . . . . . . 10 ((𝑅𝑉𝑦 ∈ (Base‘𝑅) ∧ 𝑥 ∈ (Base‘𝑅)) → (𝑦(.r𝑂)𝑥) = (𝑥(.r𝑅)𝑦))
128, 9, 10, 11syl3anc 1273 . . . . . . . . 9 (((𝑅𝑉𝑥 ∈ (Base‘𝑅)) ∧ 𝑦 ∈ (Base‘𝑅)) → (𝑦(.r𝑂)𝑥) = (𝑥(.r𝑅)𝑦))
1312eqeq1d 2240 . . . . . . . 8 (((𝑅𝑉𝑥 ∈ (Base‘𝑅)) ∧ 𝑦 ∈ (Base‘𝑅)) → ((𝑦(.r𝑂)𝑥) = 𝑦 ↔ (𝑥(.r𝑅)𝑦) = 𝑦))
147, 13anbi12d 473 . . . . . . 7 (((𝑅𝑉𝑥 ∈ (Base‘𝑅)) ∧ 𝑦 ∈ (Base‘𝑅)) → (((𝑥(.r𝑂)𝑦) = 𝑦 ∧ (𝑦(.r𝑂)𝑥) = 𝑦) ↔ ((𝑦(.r𝑅)𝑥) = 𝑦 ∧ (𝑥(.r𝑅)𝑦) = 𝑦)))
1514biancomd 271 . . . . . 6 (((𝑅𝑉𝑥 ∈ (Base‘𝑅)) ∧ 𝑦 ∈ (Base‘𝑅)) → (((𝑥(.r𝑂)𝑦) = 𝑦 ∧ (𝑦(.r𝑂)𝑥) = 𝑦) ↔ ((𝑥(.r𝑅)𝑦) = 𝑦 ∧ (𝑦(.r𝑅)𝑥) = 𝑦)))
1615ralbidva 2528 . . . . 5 ((𝑅𝑉𝑥 ∈ (Base‘𝑅)) → (∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑂)𝑦) = 𝑦 ∧ (𝑦(.r𝑂)𝑥) = 𝑦) ↔ ∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑅)𝑦) = 𝑦 ∧ (𝑦(.r𝑅)𝑥) = 𝑦)))
1716riotabidva 5988 . . . 4 (𝑅𝑉 → (𝑥 ∈ (Base‘𝑅)∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑂)𝑦) = 𝑦 ∧ (𝑦(.r𝑂)𝑥) = 𝑦)) = (𝑥 ∈ (Base‘𝑅)∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑅)𝑦) = 𝑦 ∧ (𝑦(.r𝑅)𝑥) = 𝑦)))
18 df-riota 5970 . . . 4 (𝑥 ∈ (Base‘𝑅)∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑂)𝑦) = 𝑦 ∧ (𝑦(.r𝑂)𝑥) = 𝑦)) = (℩𝑥(𝑥 ∈ (Base‘𝑅) ∧ ∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑂)𝑦) = 𝑦 ∧ (𝑦(.r𝑂)𝑥) = 𝑦)))
19 df-riota 5970 . . . 4 (𝑥 ∈ (Base‘𝑅)∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑅)𝑦) = 𝑦 ∧ (𝑦(.r𝑅)𝑥) = 𝑦)) = (℩𝑥(𝑥 ∈ (Base‘𝑅) ∧ ∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑅)𝑦) = 𝑦 ∧ (𝑦(.r𝑅)𝑥) = 𝑦)))
2017, 18, 193eqtr3g 2287 . . 3 (𝑅𝑉 → (℩𝑥(𝑥 ∈ (Base‘𝑅) ∧ ∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑂)𝑦) = 𝑦 ∧ (𝑦(.r𝑂)𝑥) = 𝑦))) = (℩𝑥(𝑥 ∈ (Base‘𝑅) ∧ ∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑅)𝑦) = 𝑦 ∧ (𝑦(.r𝑅)𝑥) = 𝑦))))
213opprex 14085 . . . . 5 (𝑅𝑉𝑂 ∈ V)
22 eqid 2231 . . . . . 6 (mulGrp‘𝑂) = (mulGrp‘𝑂)
2322mgpex 13937 . . . . 5 (𝑂 ∈ V → (mulGrp‘𝑂) ∈ V)
24 eqid 2231 . . . . . 6 (Base‘(mulGrp‘𝑂)) = (Base‘(mulGrp‘𝑂))
25 eqid 2231 . . . . . 6 (+g‘(mulGrp‘𝑂)) = (+g‘(mulGrp‘𝑂))
26 eqid 2231 . . . . . 6 (0g‘(mulGrp‘𝑂)) = (0g‘(mulGrp‘𝑂))
2724, 25, 26grpidvalg 13455 . . . . 5 ((mulGrp‘𝑂) ∈ V → (0g‘(mulGrp‘𝑂)) = (℩𝑥(𝑥 ∈ (Base‘(mulGrp‘𝑂)) ∧ ∀𝑦 ∈ (Base‘(mulGrp‘𝑂))((𝑥(+g‘(mulGrp‘𝑂))𝑦) = 𝑦 ∧ (𝑦(+g‘(mulGrp‘𝑂))𝑥) = 𝑦))))
2821, 23, 273syl 17 . . . 4 (𝑅𝑉 → (0g‘(mulGrp‘𝑂)) = (℩𝑥(𝑥 ∈ (Base‘(mulGrp‘𝑂)) ∧ ∀𝑦 ∈ (Base‘(mulGrp‘𝑂))((𝑥(+g‘(mulGrp‘𝑂))𝑦) = 𝑦 ∧ (𝑦(+g‘(mulGrp‘𝑂))𝑥) = 𝑦))))
293, 1opprbasg 14087 . . . . . . . 8 (𝑅𝑉 → (Base‘𝑅) = (Base‘𝑂))
30 eqid 2231 . . . . . . . . . 10 (Base‘𝑂) = (Base‘𝑂)
3122, 30mgpbasg 13938 . . . . . . . . 9 (𝑂 ∈ V → (Base‘𝑂) = (Base‘(mulGrp‘𝑂)))
3221, 31syl 14 . . . . . . . 8 (𝑅𝑉 → (Base‘𝑂) = (Base‘(mulGrp‘𝑂)))
3329, 32eqtrd 2264 . . . . . . 7 (𝑅𝑉 → (Base‘𝑅) = (Base‘(mulGrp‘𝑂)))
3433eleq2d 2301 . . . . . 6 (𝑅𝑉 → (𝑥 ∈ (Base‘𝑅) ↔ 𝑥 ∈ (Base‘(mulGrp‘𝑂))))
3522, 4mgpplusgg 13936 . . . . . . . . . . 11 (𝑂 ∈ V → (.r𝑂) = (+g‘(mulGrp‘𝑂)))
3621, 35syl 14 . . . . . . . . . 10 (𝑅𝑉 → (.r𝑂) = (+g‘(mulGrp‘𝑂)))
3736oveqd 6034 . . . . . . . . 9 (𝑅𝑉 → (𝑥(.r𝑂)𝑦) = (𝑥(+g‘(mulGrp‘𝑂))𝑦))
3837eqeq1d 2240 . . . . . . . 8 (𝑅𝑉 → ((𝑥(.r𝑂)𝑦) = 𝑦 ↔ (𝑥(+g‘(mulGrp‘𝑂))𝑦) = 𝑦))
3936oveqd 6034 . . . . . . . . 9 (𝑅𝑉 → (𝑦(.r𝑂)𝑥) = (𝑦(+g‘(mulGrp‘𝑂))𝑥))
4039eqeq1d 2240 . . . . . . . 8 (𝑅𝑉 → ((𝑦(.r𝑂)𝑥) = 𝑦 ↔ (𝑦(+g‘(mulGrp‘𝑂))𝑥) = 𝑦))
4138, 40anbi12d 473 . . . . . . 7 (𝑅𝑉 → (((𝑥(.r𝑂)𝑦) = 𝑦 ∧ (𝑦(.r𝑂)𝑥) = 𝑦) ↔ ((𝑥(+g‘(mulGrp‘𝑂))𝑦) = 𝑦 ∧ (𝑦(+g‘(mulGrp‘𝑂))𝑥) = 𝑦)))
4233, 41raleqbidv 2746 . . . . . 6 (𝑅𝑉 → (∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑂)𝑦) = 𝑦 ∧ (𝑦(.r𝑂)𝑥) = 𝑦) ↔ ∀𝑦 ∈ (Base‘(mulGrp‘𝑂))((𝑥(+g‘(mulGrp‘𝑂))𝑦) = 𝑦 ∧ (𝑦(+g‘(mulGrp‘𝑂))𝑥) = 𝑦)))
4334, 42anbi12d 473 . . . . 5 (𝑅𝑉 → ((𝑥 ∈ (Base‘𝑅) ∧ ∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑂)𝑦) = 𝑦 ∧ (𝑦(.r𝑂)𝑥) = 𝑦)) ↔ (𝑥 ∈ (Base‘(mulGrp‘𝑂)) ∧ ∀𝑦 ∈ (Base‘(mulGrp‘𝑂))((𝑥(+g‘(mulGrp‘𝑂))𝑦) = 𝑦 ∧ (𝑦(+g‘(mulGrp‘𝑂))𝑥) = 𝑦))))
4443iotabidv 5309 . . . 4 (𝑅𝑉 → (℩𝑥(𝑥 ∈ (Base‘𝑅) ∧ ∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑂)𝑦) = 𝑦 ∧ (𝑦(.r𝑂)𝑥) = 𝑦))) = (℩𝑥(𝑥 ∈ (Base‘(mulGrp‘𝑂)) ∧ ∀𝑦 ∈ (Base‘(mulGrp‘𝑂))((𝑥(+g‘(mulGrp‘𝑂))𝑦) = 𝑦 ∧ (𝑦(+g‘(mulGrp‘𝑂))𝑥) = 𝑦))))
4528, 44eqtr4d 2267 . . 3 (𝑅𝑉 → (0g‘(mulGrp‘𝑂)) = (℩𝑥(𝑥 ∈ (Base‘𝑅) ∧ ∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑂)𝑦) = 𝑦 ∧ (𝑦(.r𝑂)𝑥) = 𝑦))))
46 eqid 2231 . . . . . 6 (mulGrp‘𝑅) = (mulGrp‘𝑅)
4746mgpex 13937 . . . . 5 (𝑅𝑉 → (mulGrp‘𝑅) ∈ V)
48 eqid 2231 . . . . . 6 (Base‘(mulGrp‘𝑅)) = (Base‘(mulGrp‘𝑅))
49 eqid 2231 . . . . . 6 (+g‘(mulGrp‘𝑅)) = (+g‘(mulGrp‘𝑅))
50 eqid 2231 . . . . . 6 (0g‘(mulGrp‘𝑅)) = (0g‘(mulGrp‘𝑅))
5148, 49, 50grpidvalg 13455 . . . . 5 ((mulGrp‘𝑅) ∈ V → (0g‘(mulGrp‘𝑅)) = (℩𝑥(𝑥 ∈ (Base‘(mulGrp‘𝑅)) ∧ ∀𝑦 ∈ (Base‘(mulGrp‘𝑅))((𝑥(+g‘(mulGrp‘𝑅))𝑦) = 𝑦 ∧ (𝑦(+g‘(mulGrp‘𝑅))𝑥) = 𝑦))))
5247, 51syl 14 . . . 4 (𝑅𝑉 → (0g‘(mulGrp‘𝑅)) = (℩𝑥(𝑥 ∈ (Base‘(mulGrp‘𝑅)) ∧ ∀𝑦 ∈ (Base‘(mulGrp‘𝑅))((𝑥(+g‘(mulGrp‘𝑅))𝑦) = 𝑦 ∧ (𝑦(+g‘(mulGrp‘𝑅))𝑥) = 𝑦))))
5346, 1mgpbasg 13938 . . . . . . 7 (𝑅𝑉 → (Base‘𝑅) = (Base‘(mulGrp‘𝑅)))
5453eleq2d 2301 . . . . . 6 (𝑅𝑉 → (𝑥 ∈ (Base‘𝑅) ↔ 𝑥 ∈ (Base‘(mulGrp‘𝑅))))
5546, 2mgpplusgg 13936 . . . . . . . . . 10 (𝑅𝑉 → (.r𝑅) = (+g‘(mulGrp‘𝑅)))
5655oveqd 6034 . . . . . . . . 9 (𝑅𝑉 → (𝑥(.r𝑅)𝑦) = (𝑥(+g‘(mulGrp‘𝑅))𝑦))
5756eqeq1d 2240 . . . . . . . 8 (𝑅𝑉 → ((𝑥(.r𝑅)𝑦) = 𝑦 ↔ (𝑥(+g‘(mulGrp‘𝑅))𝑦) = 𝑦))
5855oveqd 6034 . . . . . . . . 9 (𝑅𝑉 → (𝑦(.r𝑅)𝑥) = (𝑦(+g‘(mulGrp‘𝑅))𝑥))
5958eqeq1d 2240 . . . . . . . 8 (𝑅𝑉 → ((𝑦(.r𝑅)𝑥) = 𝑦 ↔ (𝑦(+g‘(mulGrp‘𝑅))𝑥) = 𝑦))
6057, 59anbi12d 473 . . . . . . 7 (𝑅𝑉 → (((𝑥(.r𝑅)𝑦) = 𝑦 ∧ (𝑦(.r𝑅)𝑥) = 𝑦) ↔ ((𝑥(+g‘(mulGrp‘𝑅))𝑦) = 𝑦 ∧ (𝑦(+g‘(mulGrp‘𝑅))𝑥) = 𝑦)))
6153, 60raleqbidv 2746 . . . . . 6 (𝑅𝑉 → (∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑅)𝑦) = 𝑦 ∧ (𝑦(.r𝑅)𝑥) = 𝑦) ↔ ∀𝑦 ∈ (Base‘(mulGrp‘𝑅))((𝑥(+g‘(mulGrp‘𝑅))𝑦) = 𝑦 ∧ (𝑦(+g‘(mulGrp‘𝑅))𝑥) = 𝑦)))
6254, 61anbi12d 473 . . . . 5 (𝑅𝑉 → ((𝑥 ∈ (Base‘𝑅) ∧ ∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑅)𝑦) = 𝑦 ∧ (𝑦(.r𝑅)𝑥) = 𝑦)) ↔ (𝑥 ∈ (Base‘(mulGrp‘𝑅)) ∧ ∀𝑦 ∈ (Base‘(mulGrp‘𝑅))((𝑥(+g‘(mulGrp‘𝑅))𝑦) = 𝑦 ∧ (𝑦(+g‘(mulGrp‘𝑅))𝑥) = 𝑦))))
6362iotabidv 5309 . . . 4 (𝑅𝑉 → (℩𝑥(𝑥 ∈ (Base‘𝑅) ∧ ∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑅)𝑦) = 𝑦 ∧ (𝑦(.r𝑅)𝑥) = 𝑦))) = (℩𝑥(𝑥 ∈ (Base‘(mulGrp‘𝑅)) ∧ ∀𝑦 ∈ (Base‘(mulGrp‘𝑅))((𝑥(+g‘(mulGrp‘𝑅))𝑦) = 𝑦 ∧ (𝑦(+g‘(mulGrp‘𝑅))𝑥) = 𝑦))))
6452, 63eqtr4d 2267 . . 3 (𝑅𝑉 → (0g‘(mulGrp‘𝑅)) = (℩𝑥(𝑥 ∈ (Base‘𝑅) ∧ ∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑅)𝑦) = 𝑦 ∧ (𝑦(.r𝑅)𝑥) = 𝑦))))
6520, 45, 643eqtr4d 2274 . 2 (𝑅𝑉 → (0g‘(mulGrp‘𝑂)) = (0g‘(mulGrp‘𝑅)))
66 eqid 2231 . . . 4 (1r𝑂) = (1r𝑂)
6722, 66ringidvalg 13973 . . 3 (𝑂 ∈ V → (1r𝑂) = (0g‘(mulGrp‘𝑂)))
6821, 67syl 14 . 2 (𝑅𝑉 → (1r𝑂) = (0g‘(mulGrp‘𝑂)))
69 oppr1.2 . . 3 1 = (1r𝑅)
7046, 69ringidvalg 13973 . 2 (𝑅𝑉1 = (0g‘(mulGrp‘𝑅)))
7165, 68, 703eqtr4rd 2275 1 (𝑅𝑉1 = (1r𝑂))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104   = wceq 1397  wcel 2202  wral 2510  Vcvv 2802  cio 5284  cfv 5326  crio 5969  (class class class)co 6017  Basecbs 13081  +gcplusg 13159  .rcmulr 13160  0gc0g 13338  mulGrpcmgp 13932  1rcur 13971  opprcoppr 14079
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-nul 4215  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-cnex 8122  ax-resscn 8123  ax-1cn 8124  ax-1re 8125  ax-icn 8126  ax-addcl 8127  ax-addrcl 8128  ax-mulcl 8129  ax-addcom 8131  ax-addass 8133  ax-i2m1 8136  ax-0lt1 8137  ax-0id 8139  ax-rnegex 8140  ax-pre-ltirr 8143  ax-pre-lttrn 8145  ax-pre-ltadd 8147
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-nel 2498  df-ral 2515  df-rex 2516  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-nul 3495  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-fv 5334  df-riota 5970  df-ov 6020  df-oprab 6021  df-mpo 6022  df-tpos 6410  df-pnf 8215  df-mnf 8216  df-ltxr 8218  df-inn 9143  df-2 9201  df-3 9202  df-ndx 13084  df-slot 13085  df-base 13087  df-sets 13088  df-plusg 13172  df-mulr 13173  df-0g 13340  df-mgp 13933  df-ur 13972  df-oppr 14080
This theorem is referenced by:  opprunitd  14123  rhmopp  14189  opprnzrbg  14198
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