Theorem rspc2v 2713

Description: 2-variable restricted specialization, using implicit substitution. (Contributed by NM, 13-Sep-1999.)

Hypotheses

Ref	Expression
rspc2v.1	⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜒))
rspc2v.2	⊢ (𝑦 = 𝐵 → (𝜒 ↔ 𝜓))

Assertion

Ref	Expression
rspc2v	⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (∀𝑥 ∈ 𝐶 ∀𝑦 ∈ 𝐷 𝜑 → 𝜓))

Distinct variable groups:   𝑥,𝑦,𝐴   𝑦,𝐵   𝑥,𝐶   𝑥,𝐷,𝑦   𝜒,𝑥   𝜓,𝑦

Allowed substitution hints:   𝜑(𝑥,𝑦)   𝜓(𝑥)   𝜒(𝑦)   𝐵(𝑥)   𝐶(𝑦)

Proof of Theorem rspc2v

Step	Hyp	Ref	Expression
1		nfv 1461	. 2 ⊢ Ⅎ𝑥𝜒
2		nfv 1461	. 2 ⊢ Ⅎ𝑦𝜓
3		rspc2v.1	. 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜒))
4		rspc2v.2	. 2 ⊢ (𝑦 = 𝐵 → (𝜒 ↔ 𝜓))
5	1, 2, 3, 4	rspc2 2711	1 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (∀𝑥 ∈ 𝐶 ∀𝑦 ∈ 𝐷 𝜑 → 𝜓))

Syntax hints:   → wi 4   ∧ wa 102   ↔ wb 103   = wceq 1284   ∈ wcel 1433  ∀wral 2348

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-io 662  ax-5 1376  ax-7 1377  ax-gen 1378  ax-ie1 1422  ax-ie2 1423  ax-8 1435  ax-10 1436  ax-11 1437  ax-i12 1438  ax-bndl 1439  ax-4 1440  ax-17 1459  ax-i9 1463  ax-ial 1467  ax-i5r 1468  ax-ext 2063

This theorem depends on definitions:  df-bi 115  df-tru 1287  df-nf 1390  df-sb 1686  df-clab 2068  df-cleq 2074  df-clel 2077  df-nfc 2208  df-ral 2353  df-v 2603

This theorem is referenced by:  rspc2va  2714  rspc3v  2716  wetriext  4319  f1veqaeq  5429  isorel  5468  fovcl  5626  caovclg  5673  caovcomg  5676  smoel  5938  supmoti  6406  supsnti  6418  isotilem  6419  cauappcvgprlem1  6849  caucvgprlemnkj  6856  caucvgprlemnbj  6857  caucvgprprlemval  6878  frecuzrdgrrn  9410  iseqcaopr3  9460  iseqhomo  9468  climcn2  10148