Theorem cllem0 36890

Description: The class of all sets with property 𝜑(𝑧) is closed under the binary operation on sets defined in 𝑅(𝑥, 𝑦). (Contributed by Richard Penner, 3-Jan-2020.)

Hypotheses

Ref	Expression
cllem0.v	⊢ 𝑉 = {𝑧 ∣ 𝜑}
cllem0.rex	⊢ 𝑅 ∈ 𝑈
cllem0.r	⊢ (𝑧 = 𝑅 → (𝜑 ↔ 𝜓))
cllem0.x	⊢ (𝑧 = 𝑥 → (𝜑 ↔ 𝜒))
cllem0.y	⊢ (𝑧 = 𝑦 → (𝜑 ↔ 𝜃))
cllem0.closed	⊢ ((𝜒 ∧ 𝜃) → 𝜓)

Assertion

Ref	Expression
cllem0	⊢ ∀𝑥 ∈ 𝑉 ∀𝑦 ∈ 𝑉 𝑅 ∈ 𝑉

Distinct variable groups:   𝜓,𝑧   𝜒,𝑧   𝜃,𝑧   𝑥,𝑦,𝑧   𝑦,𝑉   𝑧,𝑅

Allowed substitution hints:   𝜑(𝑥,𝑦,𝑧)   𝜓(𝑥,𝑦)   𝜒(𝑥,𝑦)   𝜃(𝑥,𝑦)   𝑅(𝑥,𝑦)   𝑈(𝑥,𝑦,𝑧)   𝑉(𝑥,𝑧)

Proof of Theorem cllem0

Step	Hyp	Ref	Expression
1		cllem0.rex	. . . . . . 7 ⊢ 𝑅 ∈ 𝑈
2	1	elexi 3186	. . . . . 6 ⊢ 𝑅 ∈ V
3		cllem0.r	. . . . . 6 ⊢ (𝑧 = 𝑅 → (𝜑 ↔ 𝜓))
4		cllem0.v	. . . . . 6 ⊢ 𝑉 = {𝑧 ∣ 𝜑}
5	2, 3, 4	elab2 3323	. . . . 5 ⊢ (𝑅 ∈ 𝑉 ↔ 𝜓)
6	5	ralbii 2963	. . . 4 ⊢ (∀𝑦 ∈ 𝑉 𝑅 ∈ 𝑉 ↔ ∀𝑦 ∈ 𝑉 𝜓)
7	6	ralbii 2963	. . 3 ⊢ (∀𝑥 ∈ 𝑉 ∀𝑦 ∈ 𝑉 𝑅 ∈ 𝑉 ↔ ∀𝑥 ∈ 𝑉 ∀𝑦 ∈ 𝑉 𝜓)
8		df-ral 2901	. . . 4 ⊢ (∀𝑦 ∈ 𝑉 𝜓 ↔ ∀𝑦(𝑦 ∈ 𝑉 → 𝜓))
9	8	ralbii 2963	. . 3 ⊢ (∀𝑥 ∈ 𝑉 ∀𝑦 ∈ 𝑉 𝜓 ↔ ∀𝑥 ∈ 𝑉 ∀𝑦(𝑦 ∈ 𝑉 → 𝜓))
10		df-ral 2901	. . 3 ⊢ (∀𝑥 ∈ 𝑉 ∀𝑦(𝑦 ∈ 𝑉 → 𝜓) ↔ ∀𝑥(𝑥 ∈ 𝑉 → ∀𝑦(𝑦 ∈ 𝑉 → 𝜓)))
11	7, 9, 10	3bitri 285	. 2 ⊢ (∀𝑥 ∈ 𝑉 ∀𝑦 ∈ 𝑉 𝑅 ∈ 𝑉 ↔ ∀𝑥(𝑥 ∈ 𝑉 → ∀𝑦(𝑦 ∈ 𝑉 → 𝜓)))
12		vex 3176	. . . . . 6 ⊢ 𝑥 ∈ V
13		cllem0.x	. . . . . 6 ⊢ (𝑧 = 𝑥 → (𝜑 ↔ 𝜒))
14	12, 13, 4	elab2 3323	. . . . 5 ⊢ (𝑥 ∈ 𝑉 ↔ 𝜒)
15		vex 3176	. . . . . 6 ⊢ 𝑦 ∈ V
16		cllem0.y	. . . . . 6 ⊢ (𝑧 = 𝑦 → (𝜑 ↔ 𝜃))
17	15, 16, 4	elab2 3323	. . . . 5 ⊢ (𝑦 ∈ 𝑉 ↔ 𝜃)
18		cllem0.closed	. . . . 5 ⊢ ((𝜒 ∧ 𝜃) → 𝜓)
19	14, 17, 18	syl2anb 495	. . . 4 ⊢ ((𝑥 ∈ 𝑉 ∧ 𝑦 ∈ 𝑉) → 𝜓)
20	19	ex 449	. . 3 ⊢ (𝑥 ∈ 𝑉 → (𝑦 ∈ 𝑉 → 𝜓))
21	20	alrimiv 1842	. 2 ⊢ (𝑥 ∈ 𝑉 → ∀𝑦(𝑦 ∈ 𝑉 → 𝜓))
22	11, 21	mpgbir 1717	1 ⊢ ∀𝑥 ∈ 𝑉 ∀𝑦 ∈ 𝑉 𝑅 ∈ 𝑉

Syntax hints:   → wi 4   ↔ wb 195   ∧ wa 383  ∀wal 1473   = wceq 1475   ∈ wcel 1977  {cab 2596  ∀wral 2896

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-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  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-v 3175

This theorem is referenced by:  superficl  36891  superuncl  36892  ssficl  36893  ssuncl  36894  ssdifcl  36895  sssymdifcl  36896  trficl  36980