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Theorem opelcn 7893
Description: Ordered pair membership in the class of complex numbers. (Contributed by NM, 14-May-1996.)
Assertion
Ref Expression
opelcn (⟨𝐴, 𝐵⟩ ∈ ℂ ↔ (𝐴R𝐵R))

Proof of Theorem opelcn
StepHypRef Expression
1 df-c 7885 . . 3 ℂ = (R × R)
21eleq2i 2263 . 2 (⟨𝐴, 𝐵⟩ ∈ ℂ ↔ ⟨𝐴, 𝐵⟩ ∈ (R × R))
3 opelxp 4693 . 2 (⟨𝐴, 𝐵⟩ ∈ (R × R) ↔ (𝐴R𝐵R))
42, 3bitri 184 1 (⟨𝐴, 𝐵⟩ ∈ ℂ ↔ (𝐴R𝐵R))
Colors of variables: wff set class
Syntax hints:  wa 104  wb 105  wcel 2167  cop 3625   × cxp 4661  Rcnr 7364  cc 7877
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-io 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-14 2170  ax-ext 2178  ax-sep 4151  ax-pow 4207  ax-pr 4242
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1475  df-sb 1777  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ral 2480  df-rex 2481  df-v 2765  df-un 3161  df-in 3163  df-ss 3170  df-pw 3607  df-sn 3628  df-pr 3629  df-op 3631  df-opab 4095  df-xp 4669  df-c 7885
This theorem is referenced by:  axicn  7930
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