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Theorem opelcn 7788
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 7780 . . 3 ℂ = (R × R)
21eleq2i 2237 . 2 (⟨𝐴, 𝐵⟩ ∈ ℂ ↔ ⟨𝐴, 𝐵⟩ ∈ (R × R))
3 opelxp 4641 . 2 (⟨𝐴, 𝐵⟩ ∈ (R × R) ↔ (𝐴R𝐵R))
42, 3bitri 183 1 (⟨𝐴, 𝐵⟩ ∈ ℂ ↔ (𝐴R𝐵R))
Colors of variables: wff set class
Syntax hints:  wa 103  wb 104  wcel 2141  cop 3586   × cxp 4609  Rcnr 7259  cc 7772
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-14 2144  ax-ext 2152  ax-sep 4107  ax-pow 4160  ax-pr 4194
This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-nf 1454  df-sb 1756  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ral 2453  df-rex 2454  df-v 2732  df-un 3125  df-in 3127  df-ss 3134  df-pw 3568  df-sn 3589  df-pr 3590  df-op 3592  df-opab 4051  df-xp 4617  df-c 7780
This theorem is referenced by:  axicn  7825
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