Theorem elinintrab 38719

Description: Two ways of saying a set is an element of the intersection of a class with the intersection of a class. (Contributed by RP, 14-Aug-2020.)

Assertion

Ref	Expression
elinintrab	⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ ∩ {𝑤 ∈ 𝒫 𝐵 ∣ ∃𝑥(𝑤 = (𝐵 ∩ 𝑥) ∧ 𝜑)} ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥))))

Distinct variable groups:   𝜑,𝑤   𝑥,𝑤,𝐴   𝑤,𝐵,𝑥

Allowed substitution hints:   𝜑(𝑥)   𝑉(𝑥,𝑤)

Proof of Theorem elinintrab

Step	Hyp	Ref	Expression
1		vex 3417	. . . 4 ⊢ 𝑥 ∈ V
2	1	inex2 5027	. . 3 ⊢ (𝐵 ∩ 𝑥) ∈ V
3		inss1 4059	. . 3 ⊢ (𝐵 ∩ 𝑥) ⊆ 𝐵
4	2, 3	elmapintrab 38718	. 2 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ ∩ {𝑤 ∈ 𝒫 𝐵 ∣ ∃𝑥(𝑤 = (𝐵 ∩ 𝑥) ∧ 𝜑)} ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥)))))
5		elin 4025	. . . . . . . 8 ⊢ (𝐴 ∈ (𝐵 ∩ 𝑥) ↔ (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝑥))
6	5	imbi2i 328	. . . . . . 7 ⊢ ((𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥)) ↔ (𝜑 → (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝑥)))
7		jcab 513	. . . . . . 7 ⊢ ((𝜑 → (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝑥)) ↔ ((𝜑 → 𝐴 ∈ 𝐵) ∧ (𝜑 → 𝐴 ∈ 𝑥)))
8	6, 7	bitri 267	. . . . . 6 ⊢ ((𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥)) ↔ ((𝜑 → 𝐴 ∈ 𝐵) ∧ (𝜑 → 𝐴 ∈ 𝑥)))
9	8	albii 1918	. . . . 5 ⊢ (∀𝑥(𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥)) ↔ ∀𝑥((𝜑 → 𝐴 ∈ 𝐵) ∧ (𝜑 → 𝐴 ∈ 𝑥)))
10		19.26 1972	. . . . . 6 ⊢ (∀𝑥((𝜑 → 𝐴 ∈ 𝐵) ∧ (𝜑 → 𝐴 ∈ 𝑥)) ↔ (∀𝑥(𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)))
11		19.23v 2041	. . . . . . 7 ⊢ (∀𝑥(𝜑 → 𝐴 ∈ 𝐵) ↔ (∃𝑥𝜑 → 𝐴 ∈ 𝐵))
12	11	anbi1i 617	. . . . . 6 ⊢ ((∀𝑥(𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)) ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)))
13	10, 12	bitri 267	. . . . 5 ⊢ (∀𝑥((𝜑 → 𝐴 ∈ 𝐵) ∧ (𝜑 → 𝐴 ∈ 𝑥)) ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)))
14	9, 13	bitri 267	. . . 4 ⊢ (∀𝑥(𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥)) ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)))
15	14	anbi2i 616	. . 3 ⊢ (((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥))) ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥))))
16		anabs5 653	. . 3 ⊢ (((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥))) ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)))
17	15, 16	bitri 267	. 2 ⊢ (((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥))) ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)))
18	4, 17	syl6bb 279	1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ ∩ {𝑤 ∈ 𝒫 𝐵 ∣ ∃𝑥(𝑤 = (𝐵 ∩ 𝑥) ∧ 𝜑)} ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥))))

Syntax hints:   → wi 4   ↔ wb 198   ∧ wa 386  ∀wal 1654   = wceq 1656  ∃wex 1878   ∈ wcel 2164  {crab 3121   ∩ cin 3797  𝒫 cpw 4380  ∩ cint 4699

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1894  ax-4 1908  ax-5 2009  ax-6 2075  ax-7 2112  ax-9 2173  ax-10 2192  ax-11 2207  ax-12 2220  ax-ext 2803  ax-sep 5007

This theorem depends on definitions:  df-bi 199  df-an 387  df-or 879  df-3an 1113  df-tru 1660  df-ex 1879  df-nf 1883  df-sb 2068  df-clab 2812  df-cleq 2818  df-clel 2821  df-nfc 2958  df-ral 3122  df-rab 3126  df-v 3416  df-in 3805  df-ss 3812  df-pw 4382  df-int 4700

This theorem is referenced by:  inintabss  38720  inintabd  38721