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Theorem oppr1g 14226
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 2232 . . . . . . . . . . 11 (Base‘𝑅) = (Base‘𝑅)
2 eqid 2232 . . . . . . . . . . 11 (.r𝑅) = (.r𝑅)
3 opprbas.1 . . . . . . . . . . 11 𝑂 = (oppr𝑅)
4 eqid 2232 . . . . . . . . . . 11 (.r𝑂) = (.r𝑂)
51, 2, 3, 4opprmulg 14215 . . . . . . . . . 10 ((𝑅𝑉𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅)) → (𝑥(.r𝑂)𝑦) = (𝑦(.r𝑅)𝑥))
653expa 1230 . . . . . . . . 9 (((𝑅𝑉𝑥 ∈ (Base‘𝑅)) ∧ 𝑦 ∈ (Base‘𝑅)) → (𝑥(.r𝑂)𝑦) = (𝑦(.r𝑅)𝑥))
76eqeq1d 2241 . . . . . . . 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 14215 . . . . . . . . . 10 ((𝑅𝑉𝑦 ∈ (Base‘𝑅) ∧ 𝑥 ∈ (Base‘𝑅)) → (𝑦(.r𝑂)𝑥) = (𝑥(.r𝑅)𝑦))
128, 9, 10, 11syl3anc 1274 . . . . . . . . 9 (((𝑅𝑉𝑥 ∈ (Base‘𝑅)) ∧ 𝑦 ∈ (Base‘𝑅)) → (𝑦(.r𝑂)𝑥) = (𝑥(.r𝑅)𝑦))
1312eqeq1d 2241 . . . . . . . 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 2538 . . . . 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 6021 . . . 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 6003 . . . 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 6003 . . . 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 2288 . . 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 14217 . . . . 5 (𝑅𝑉𝑂 ∈ V)
22 eqid 2232 . . . . . 6 (mulGrp‘𝑂) = (mulGrp‘𝑂)
2322mgpex 14069 . . . . 5 (𝑂 ∈ V → (mulGrp‘𝑂) ∈ V)
24 eqid 2232 . . . . . 6 (Base‘(mulGrp‘𝑂)) = (Base‘(mulGrp‘𝑂))
25 eqid 2232 . . . . . 6 (+g‘(mulGrp‘𝑂)) = (+g‘(mulGrp‘𝑂))
26 eqid 2232 . . . . . 6 (0g‘(mulGrp‘𝑂)) = (0g‘(mulGrp‘𝑂))
2724, 25, 26grpidvalg 13586 . . . . 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 14219 . . . . . . . 8 (𝑅𝑉 → (Base‘𝑅) = (Base‘𝑂))
30 eqid 2232 . . . . . . . . . 10 (Base‘𝑂) = (Base‘𝑂)
3122, 30mgpbasg 14070 . . . . . . . . 9 (𝑂 ∈ V → (Base‘𝑂) = (Base‘(mulGrp‘𝑂)))
3221, 31syl 14 . . . . . . . 8 (𝑅𝑉 → (Base‘𝑂) = (Base‘(mulGrp‘𝑂)))
3329, 32eqtrd 2265 . . . . . . 7 (𝑅𝑉 → (Base‘𝑅) = (Base‘(mulGrp‘𝑂)))
3433eleq2d 2302 . . . . . 6 (𝑅𝑉 → (𝑥 ∈ (Base‘𝑅) ↔ 𝑥 ∈ (Base‘(mulGrp‘𝑂))))
3522, 4mgpplusgg 14068 . . . . . . . . . . 11 (𝑂 ∈ V → (.r𝑂) = (+g‘(mulGrp‘𝑂)))
3621, 35syl 14 . . . . . . . . . 10 (𝑅𝑉 → (.r𝑂) = (+g‘(mulGrp‘𝑂)))
3736oveqd 6067 . . . . . . . . 9 (𝑅𝑉 → (𝑥(.r𝑂)𝑦) = (𝑥(+g‘(mulGrp‘𝑂))𝑦))
3837eqeq1d 2241 . . . . . . . 8 (𝑅𝑉 → ((𝑥(.r𝑂)𝑦) = 𝑦 ↔ (𝑥(+g‘(mulGrp‘𝑂))𝑦) = 𝑦))
3936oveqd 6067 . . . . . . . . 9 (𝑅𝑉 → (𝑦(.r𝑂)𝑥) = (𝑦(+g‘(mulGrp‘𝑂))𝑥))
4039eqeq1d 2241 . . . . . . . 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 2757 . . . . . 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 5335 . . . 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 2268 . . 3 (𝑅𝑉 → (0g‘(mulGrp‘𝑂)) = (℩𝑥(𝑥 ∈ (Base‘𝑅) ∧ ∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑂)𝑦) = 𝑦 ∧ (𝑦(.r𝑂)𝑥) = 𝑦))))
46 eqid 2232 . . . . . 6 (mulGrp‘𝑅) = (mulGrp‘𝑅)
4746mgpex 14069 . . . . 5 (𝑅𝑉 → (mulGrp‘𝑅) ∈ V)
48 eqid 2232 . . . . . 6 (Base‘(mulGrp‘𝑅)) = (Base‘(mulGrp‘𝑅))
49 eqid 2232 . . . . . 6 (+g‘(mulGrp‘𝑅)) = (+g‘(mulGrp‘𝑅))
50 eqid 2232 . . . . . 6 (0g‘(mulGrp‘𝑅)) = (0g‘(mulGrp‘𝑅))
5148, 49, 50grpidvalg 13586 . . . . 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 14070 . . . . . . 7 (𝑅𝑉 → (Base‘𝑅) = (Base‘(mulGrp‘𝑅)))
5453eleq2d 2302 . . . . . 6 (𝑅𝑉 → (𝑥 ∈ (Base‘𝑅) ↔ 𝑥 ∈ (Base‘(mulGrp‘𝑅))))
5546, 2mgpplusgg 14068 . . . . . . . . . 10 (𝑅𝑉 → (.r𝑅) = (+g‘(mulGrp‘𝑅)))
5655oveqd 6067 . . . . . . . . 9 (𝑅𝑉 → (𝑥(.r𝑅)𝑦) = (𝑥(+g‘(mulGrp‘𝑅))𝑦))
5756eqeq1d 2241 . . . . . . . 8 (𝑅𝑉 → ((𝑥(.r𝑅)𝑦) = 𝑦 ↔ (𝑥(+g‘(mulGrp‘𝑅))𝑦) = 𝑦))
5855oveqd 6067 . . . . . . . . 9 (𝑅𝑉 → (𝑦(.r𝑅)𝑥) = (𝑦(+g‘(mulGrp‘𝑅))𝑥))
5958eqeq1d 2241 . . . . . . . 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 2757 . . . . . 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 5335 . . . 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 2268 . . 3 (𝑅𝑉 → (0g‘(mulGrp‘𝑅)) = (℩𝑥(𝑥 ∈ (Base‘𝑅) ∧ ∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑅)𝑦) = 𝑦 ∧ (𝑦(.r𝑅)𝑥) = 𝑦))))
6520, 45, 643eqtr4d 2275 . 2 (𝑅𝑉 → (0g‘(mulGrp‘𝑂)) = (0g‘(mulGrp‘𝑅)))
66 eqid 2232 . . . 4 (1r𝑂) = (1r𝑂)
6722, 66ringidvalg 14105 . . 3 (𝑂 ∈ V → (1r𝑂) = (0g‘(mulGrp‘𝑂)))
6821, 67syl 14 . 2 (𝑅𝑉 → (1r𝑂) = (0g‘(mulGrp‘𝑂)))
69 oppr1.2 . . 3 1 = (1r𝑅)
7046, 69ringidvalg 14105 . 2 (𝑅𝑉1 = (0g‘(mulGrp‘𝑅)))
7165, 68, 703eqtr4rd 2276 1 (𝑅𝑉1 = (1r𝑂))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104   = wceq 1398  wcel 2203  wral 2520  Vcvv 2813  cio 5310  cfv 5352  crio 6002  (class class class)co 6050  Basecbs 13212  +gcplusg 13290  .rcmulr 13291  0gc0g 13469  mulGrpcmgp 14064  1rcur 14103  opprcoppr 14211
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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2205  ax-14 2206  ax-ext 2214  ax-sep 4228  ax-nul 4236  ax-pow 4287  ax-pr 4322  ax-un 4554  ax-setind 4659  ax-cnex 8218  ax-resscn 8219  ax-1cn 8220  ax-1re 8221  ax-icn 8222  ax-addcl 8223  ax-addrcl 8224  ax-mulcl 8225  ax-addcom 8227  ax-addass 8229  ax-i2m1 8232  ax-0lt1 8233  ax-0id 8235  ax-rnegex 8236  ax-pre-ltirr 8239  ax-pre-lttrn 8241  ax-pre-ltadd 8243
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-nel 2508  df-ral 2525  df-rex 2526  df-rab 2529  df-v 2815  df-sbc 3043  df-csb 3139  df-dif 3213  df-un 3215  df-in 3217  df-ss 3224  df-nul 3509  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-int 3950  df-br 4110  df-opab 4172  df-mpt 4173  df-id 4414  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-rn 4760  df-res 4761  df-ima 4762  df-iota 5312  df-fun 5354  df-fn 5355  df-fv 5360  df-riota 6003  df-ov 6053  df-oprab 6054  df-mpo 6055  df-tpos 6476  df-pnf 8310  df-mnf 8311  df-ltxr 8313  df-inn 9238  df-2 9296  df-3 9297  df-ndx 13215  df-slot 13216  df-base 13218  df-sets 13219  df-plusg 13303  df-mulr 13304  df-0g 13471  df-mgp 14065  df-ur 14104  df-oppr 14212
This theorem is referenced by:  opprunitd  14255  rhmopp  14321  opprnzrbg  14330
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