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Theorem opprringb 14327
Description: Bidirectional form of opprring 14325. (Contributed by Mario Carneiro, 6-Dec-2014.)
Hypothesis
Ref Expression
opprbas.1 𝑂 = (oppr𝑅)
Assertion
Ref Expression
opprringb (𝑅 ∈ Ring ↔ 𝑂 ∈ Ring)

Proof of Theorem opprringb
Dummy variable 𝑗 is distinct from all other variables.
StepHypRef Expression
1 elex 2827 . 2 (𝑅 ∈ Ring → 𝑅 ∈ V)
2 eqid 2234 . . . . 5 (Base‘𝑂) = (Base‘𝑂)
3 eqid 2234 . . . . 5 (1r𝑂) = (1r𝑂)
42, 3ringidcl 14266 . . . 4 (𝑂 ∈ Ring → (1r𝑂) ∈ (Base‘𝑂))
52basm 13361 . . . 4 ((1r𝑂) ∈ (Base‘𝑂) → ∃𝑗 𝑗𝑂)
64, 5syl 14 . . 3 (𝑂 ∈ Ring → ∃𝑗 𝑗𝑂)
7 mptrel 4888 . . . . . 6 Rel (𝑓 ∈ V ↦ (𝑓 sSet ⟨(.r‘ndx), tpos (.r𝑓)⟩))
8 df-oppr 14314 . . . . . . 7 oppr = (𝑓 ∈ V ↦ (𝑓 sSet ⟨(.r‘ndx), tpos (.r𝑓)⟩))
98releqi 4838 . . . . . 6 (Rel oppr ↔ Rel (𝑓 ∈ V ↦ (𝑓 sSet ⟨(.r‘ndx), tpos (.r𝑓)⟩)))
107, 9mpbir 146 . . . . 5 Rel oppr
11 opprbas.1 . . . . . . . 8 𝑂 = (oppr𝑅)
1211eleq2i 2301 . . . . . . 7 (𝑗𝑂𝑗 ∈ (oppr𝑅))
1312biimpi 120 . . . . . 6 (𝑗𝑂𝑗 ∈ (oppr𝑅))
1413adantl 277 . . . . 5 ((𝑂 ∈ Ring ∧ 𝑗𝑂) → 𝑗 ∈ (oppr𝑅))
15 relelfvdm 5707 . . . . 5 ((Rel oppr𝑗 ∈ (oppr𝑅)) → 𝑅 ∈ dom oppr)
1610, 14, 15sylancr 414 . . . 4 ((𝑂 ∈ Ring ∧ 𝑗𝑂) → 𝑅 ∈ dom oppr)
1716elexd 2829 . . 3 ((𝑂 ∈ Ring ∧ 𝑗𝑂) → 𝑅 ∈ V)
186, 17exlimddv 1950 . 2 (𝑂 ∈ Ring → 𝑅 ∈ V)
1911opprringbg 14326 . 2 (𝑅 ∈ V → (𝑅 ∈ Ring ↔ 𝑂 ∈ Ring))
201, 18, 19pm5.21nii 712 1 (𝑅 ∈ Ring ↔ 𝑂 ∈ Ring)
Colors of variables: wff set class
Syntax hints:  wa 104  wb 105   = wceq 1398  wex 1541  wcel 2205  Vcvv 2815  cop 3697  cmpt 4176  dom cdm 4754  Rel wrel 4759  cfv 5357  (class class class)co 6058  tpos ctpos 6488  ndxcnx 13296   sSet csts 13297  Basecbs 13299  .rcmulr 13378  1rcur 14205  Ringcrg 14242  opprcoppr 14313
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 2207  ax-14 2208  ax-ext 2216  ax-sep 4233  ax-nul 4241  ax-pow 4292  ax-pr 4327  ax-un 4559  ax-setind 4664  ax-cnex 8234  ax-resscn 8235  ax-1cn 8236  ax-1re 8237  ax-icn 8238  ax-addcl 8239  ax-addrcl 8240  ax-mulcl 8241  ax-addcom 8243  ax-addass 8245  ax-i2m1 8248  ax-0lt1 8249  ax-0id 8251  ax-rnegex 8252  ax-pre-ltirr 8255  ax-pre-lttrn 8257  ax-pre-ltadd 8259
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 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-nel 2510  df-ral 2527  df-rex 2528  df-reu 2529  df-rmo 2530  df-rab 2531  df-v 2817  df-sbc 3046  df-csb 3142  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-nul 3513  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-int 3955  df-br 4115  df-opab 4177  df-mpt 4178  df-id 4419  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-res 4766  df-ima 4767  df-iota 5317  df-fun 5359  df-fn 5360  df-fv 5365  df-riota 6011  df-ov 6061  df-oprab 6062  df-mpo 6063  df-tpos 6489  df-pnf 8326  df-mnf 8327  df-ltxr 8329  df-inn 9258  df-2 9316  df-3 9317  df-ndx 13302  df-slot 13303  df-base 13305  df-sets 13306  df-plusg 13390  df-mulr 13391  df-0g 13558  df-mgm 13622  df-sgrp 13668  df-mnd 13681  df-grp 13761  df-mgp 14163  df-ur 14206  df-ring 14244  df-oppr 14314
This theorem is referenced by:  opprlring  14445  opprdrng  14561
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