Theorem xpexd 38314

Description: The Cartesian product of two sets is a set. (Contributed by Glauco Siliprandi, 26-Jun-2021.)

Hypotheses

Ref	Expression
xpexd.1	⊢ (𝜑 → 𝐴 ∈ 𝑉)
xpexd.2	⊢ (𝜑 → 𝐵 ∈ 𝑊)

Assertion

Ref	Expression
xpexd	⊢ (𝜑 → (𝐴 × 𝐵) ∈ V)

Proof of Theorem xpexd

Step	Hyp	Ref	Expression
1		xpexd.1	. 2 ⊢ (𝜑 → 𝐴 ∈ 𝑉)
2		xpexd.2	. 2 ⊢ (𝜑 → 𝐵 ∈ 𝑊)
3		xpexg 6858	. 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V)
4	1, 2, 3	syl2anc 691	1 ⊢ (𝜑 → (𝐴 × 𝐵) ∈ V)

Syntax hints:   → wi 4   ∈ wcel 1977  Vcvv 3173   × cxp 5036

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ral 2901  df-rex 2902  df-rab 2905  df-v 3175  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-opab 4644  df-xp 5044  df-rel 5045

This theorem is referenced by: (None)