Theorem opelcn 11170

Description: Ordered pair membership in the class of complex numbers. (Contributed by NM, 14-May-1996.) (New usage is discouraged.)

Assertion

Ref	Expression
opelcn	⊢ (⟨𝐴, 𝐵⟩ ∈ ℂ ↔ (𝐴 ∈ R ∧ 𝐵 ∈ R))

Proof of Theorem opelcn

Step	Hyp	Ref	Expression
1		df-c 11162	. . 3 ⊢ ℂ = (R × R)
2	1	eleq2i 2832	. 2 ⊢ (⟨𝐴, 𝐵⟩ ∈ ℂ ↔ ⟨𝐴, 𝐵⟩ ∈ (R × R))
3		opelxp 5720	. 2 ⊢ (⟨𝐴, 𝐵⟩ ∈ (R × R) ↔ (𝐴 ∈ R ∧ 𝐵 ∈ R))
4	2, 3	bitri 275	1 ⊢ (⟨𝐴, 𝐵⟩ ∈ ℂ ↔ (𝐴 ∈ R ∧ 𝐵 ∈ R))

Syntax hints:   ↔ wb 206   ∧ wa 395   ∈ wcel 2107  ⟨cop 4631   × cxp 5682  Rcnr 10906  ℂcc 11154

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1794  ax-4 1808  ax-5 1909  ax-6 1966  ax-7 2006  ax-8 2109  ax-9 2117  ax-ext 2707  ax-sep 5295  ax-nul 5305  ax-pr 5431

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1779  df-sb 2064  df-clab 2714  df-cleq 2728  df-clel 2815  df-ral 3061  df-rex 3070  df-rab 3436  df-v 3481  df-dif 3953  df-un 3955  df-ss 3967  df-nul 4333  df-if 4525  df-sn 4626  df-pr 4628  df-op 4632  df-opab 5205  df-xp 5690  df-c 11162

This theorem is referenced by:  axicn  11191