Theorem elinintrab 37883

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 3203	. . . 4 ⊢ 𝑥 ∈ V
2	1	inex2 4800	. . 3 ⊢ (𝐵 ∩ 𝑥) ∈ V
3		inss1 3833	. . 3 ⊢ (𝐵 ∩ 𝑥) ⊆ 𝐵
4	2, 3	elmapintrab 37882	. 2 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ ∩ {𝑤 ∈ 𝒫 𝐵 ∣ ∃𝑥(𝑤 = (𝐵 ∩ 𝑥) ∧ 𝜑)} ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥)))))
5		elin 3796	. . . . . . . 8 ⊢ (𝐴 ∈ (𝐵 ∩ 𝑥) ↔ (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝑥))
6	5	imbi2i 326	. . . . . . 7 ⊢ ((𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥)) ↔ (𝜑 → (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝑥)))
7		jcab 907	. . . . . . 7 ⊢ ((𝜑 → (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝑥)) ↔ ((𝜑 → 𝐴 ∈ 𝐵) ∧ (𝜑 → 𝐴 ∈ 𝑥)))
8	6, 7	bitri 264	. . . . . 6 ⊢ ((𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥)) ↔ ((𝜑 → 𝐴 ∈ 𝐵) ∧ (𝜑 → 𝐴 ∈ 𝑥)))
9	8	albii 1747	. . . . 5 ⊢ (∀𝑥(𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥)) ↔ ∀𝑥((𝜑 → 𝐴 ∈ 𝐵) ∧ (𝜑 → 𝐴 ∈ 𝑥)))
10		19.26 1798	. . . . . 6 ⊢ (∀𝑥((𝜑 → 𝐴 ∈ 𝐵) ∧ (𝜑 → 𝐴 ∈ 𝑥)) ↔ (∀𝑥(𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)))
11		19.23v 1902	. . . . . . 7 ⊢ (∀𝑥(𝜑 → 𝐴 ∈ 𝐵) ↔ (∃𝑥𝜑 → 𝐴 ∈ 𝐵))
12	11	anbi1i 731	. . . . . 6 ⊢ ((∀𝑥(𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)) ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)))
13	10, 12	bitri 264	. . . . 5 ⊢ (∀𝑥((𝜑 → 𝐴 ∈ 𝐵) ∧ (𝜑 → 𝐴 ∈ 𝑥)) ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)))
14	9, 13	bitri 264	. . . 4 ⊢ (∀𝑥(𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥)) ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)))
15	14	anbi2i 730	. . 3 ⊢ (((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥))) ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥))))
16		anabs5 851	. . 3 ⊢ (((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥))) ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)))
17	15, 16	bitri 264	. 2 ⊢ (((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ (𝐵 ∩ 𝑥))) ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥)))
18	4, 17	syl6bb 276	1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ ∩ {𝑤 ∈ 𝒫 𝐵 ∣ ∃𝑥(𝑤 = (𝐵 ∩ 𝑥) ∧ 𝜑)} ↔ ((∃𝑥𝜑 → 𝐴 ∈ 𝐵) ∧ ∀𝑥(𝜑 → 𝐴 ∈ 𝑥))))

Syntax hints:   → wi 4   ↔ wb 196   ∧ wa 384  ∀wal 1481   = wceq 1483  ∃wex 1704   ∈ wcel 1990  {crab 2916   ∩ cin 3573  𝒫 cpw 4158  ∩ cint 4475

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ral 2917  df-rab 2921  df-v 3202  df-in 3581  df-ss 3588  df-pw 4160  df-int 4476

This theorem is referenced by:  inintabss  37884  inintabd  37885