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Theorem opprvalg 13831
Description: Value of the opposite ring. (Contributed by Mario Carneiro, 1-Dec-2014.)
Hypotheses
Ref Expression
opprval.1 𝐵 = (Base‘𝑅)
opprval.2 · = (.r𝑅)
opprval.3 𝑂 = (oppr𝑅)
Assertion
Ref Expression
opprvalg (𝑅𝑉𝑂 = (𝑅 sSet ⟨(.r‘ndx), tpos · ⟩))

Proof of Theorem opprvalg
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 opprval.3 . 2 𝑂 = (oppr𝑅)
2 df-oppr 13830 . . 3 oppr = (𝑥 ∈ V ↦ (𝑥 sSet ⟨(.r‘ndx), tpos (.r𝑥)⟩))
3 id 19 . . . 4 (𝑥 = 𝑅𝑥 = 𝑅)
4 fveq2 5576 . . . . . . 7 (𝑥 = 𝑅 → (.r𝑥) = (.r𝑅))
5 opprval.2 . . . . . . 7 · = (.r𝑅)
64, 5eqtr4di 2256 . . . . . 6 (𝑥 = 𝑅 → (.r𝑥) = · )
76tposeqd 6334 . . . . 5 (𝑥 = 𝑅 → tpos (.r𝑥) = tpos · )
87opeq2d 3826 . . . 4 (𝑥 = 𝑅 → ⟨(.r‘ndx), tpos (.r𝑥)⟩ = ⟨(.r‘ndx), tpos · ⟩)
93, 8oveq12d 5962 . . 3 (𝑥 = 𝑅 → (𝑥 sSet ⟨(.r‘ndx), tpos (.r𝑥)⟩) = (𝑅 sSet ⟨(.r‘ndx), tpos · ⟩))
10 elex 2783 . . 3 (𝑅𝑉𝑅 ∈ V)
11 mulrslid 12964 . . . . . 6 (.r = Slot (.r‘ndx) ∧ (.r‘ndx) ∈ ℕ)
1211simpri 113 . . . . 5 (.r‘ndx) ∈ ℕ
1312a1i 9 . . . 4 (𝑅𝑉 → (.r‘ndx) ∈ ℕ)
1411slotex 12859 . . . . . 6 (𝑅𝑉 → (.r𝑅) ∈ V)
155, 14eqeltrid 2292 . . . . 5 (𝑅𝑉· ∈ V)
16 tposexg 6344 . . . . 5 ( · ∈ V → tpos · ∈ V)
1715, 16syl 14 . . . 4 (𝑅𝑉 → tpos · ∈ V)
18 setsex 12864 . . . 4 ((𝑅 ∈ V ∧ (.r‘ndx) ∈ ℕ ∧ tpos · ∈ V) → (𝑅 sSet ⟨(.r‘ndx), tpos · ⟩) ∈ V)
1910, 13, 17, 18syl3anc 1250 . . 3 (𝑅𝑉 → (𝑅 sSet ⟨(.r‘ndx), tpos · ⟩) ∈ V)
202, 9, 10, 19fvmptd3 5673 . 2 (𝑅𝑉 → (oppr𝑅) = (𝑅 sSet ⟨(.r‘ndx), tpos · ⟩))
211, 20eqtrid 2250 1 (𝑅𝑉𝑂 = (𝑅 sSet ⟨(.r‘ndx), tpos · ⟩))
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1373  wcel 2176  Vcvv 2772  cop 3636  cfv 5271  (class class class)co 5944  tpos ctpos 6330  cn 9036  ndxcnx 12829   sSet csts 12830  Slot cslot 12831  Basecbs 12832  .rcmulr 12910  opprcoppr 13829
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 615  ax-in2 616  ax-io 711  ax-5 1470  ax-7 1471  ax-gen 1472  ax-ie1 1516  ax-ie2 1517  ax-8 1527  ax-10 1528  ax-11 1529  ax-i12 1530  ax-bndl 1532  ax-4 1533  ax-17 1549  ax-i9 1553  ax-ial 1557  ax-i5r 1558  ax-13 2178  ax-14 2179  ax-ext 2187  ax-sep 4162  ax-nul 4170  ax-pow 4218  ax-pr 4253  ax-un 4480  ax-setind 4585  ax-cnex 8016  ax-resscn 8017  ax-1re 8019  ax-addrcl 8022
This theorem depends on definitions:  df-bi 117  df-3an 983  df-tru 1376  df-fal 1379  df-nf 1484  df-sb 1786  df-eu 2057  df-mo 2058  df-clab 2192  df-cleq 2198  df-clel 2201  df-nfc 2337  df-ne 2377  df-ral 2489  df-rex 2490  df-rab 2493  df-v 2774  df-sbc 2999  df-csb 3094  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-nul 3461  df-pw 3618  df-sn 3639  df-pr 3640  df-op 3642  df-uni 3851  df-int 3886  df-br 4045  df-opab 4106  df-mpt 4107  df-id 4340  df-xp 4681  df-rel 4682  df-cnv 4683  df-co 4684  df-dm 4685  df-rn 4686  df-res 4687  df-ima 4688  df-iota 5232  df-fun 5273  df-fn 5274  df-fv 5279  df-ov 5947  df-oprab 5948  df-mpo 5949  df-tpos 6331  df-inn 9037  df-2 9095  df-3 9096  df-ndx 12835  df-slot 12836  df-sets 12839  df-mulr 12923  df-oppr 13830
This theorem is referenced by:  opprmulfvalg  13832  opprex  13835  opprsllem  13836
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