Theorem grothtsk 9657

Description: The Tarski-Grothendieck Axiom, using abbreviations. (Contributed by Mario Carneiro, 28-May-2013.)

Assertion

Ref	Expression
grothtsk	⊢ ∪ Tarski = V

Proof of Theorem grothtsk

Dummy variables 𝑥 𝑤 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		axgroth5 9646	. . . . 5 ⊢ ∃𝑥(𝑤 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥))
2		vex 3203	. . . . . . . . 9 ⊢ 𝑥 ∈ V
3		eltskg 9572	. . . . . . . . 9 ⊢ (𝑥 ∈ V → (𝑥 ∈ Tarski ↔ (∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥))))
4	2, 3	ax-mp 5	. . . . . . . 8 ⊢ (𝑥 ∈ Tarski ↔ (∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥)))
5	4	anbi2i 730	. . . . . . 7 ⊢ ((𝑤 ∈ 𝑥 ∧ 𝑥 ∈ Tarski) ↔ (𝑤 ∈ 𝑥 ∧ (∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥))))
6		3anass 1042	. . . . . . 7 ⊢ ((𝑤 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥)) ↔ (𝑤 ∈ 𝑥 ∧ (∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥))))
7	5, 6	bitr4i 267	. . . . . 6 ⊢ ((𝑤 ∈ 𝑥 ∧ 𝑥 ∈ Tarski) ↔ (𝑤 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥)))
8	7	exbii 1774	. . . . 5 ⊢ (∃𝑥(𝑤 ∈ 𝑥 ∧ 𝑥 ∈ Tarski) ↔ ∃𝑥(𝑤 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥)))
9	1, 8	mpbir 221	. . . 4 ⊢ ∃𝑥(𝑤 ∈ 𝑥 ∧ 𝑥 ∈ Tarski)
10		eluni 4439	. . . 4 ⊢ (𝑤 ∈ ∪ Tarski ↔ ∃𝑥(𝑤 ∈ 𝑥 ∧ 𝑥 ∈ Tarski))
11	9, 10	mpbir 221	. . 3 ⊢ 𝑤 ∈ ∪ Tarski
12		vex 3203	. . 3 ⊢ 𝑤 ∈ V
13	11, 12	2th 254	. 2 ⊢ (𝑤 ∈ ∪ Tarski ↔ 𝑤 ∈ V)
14	13	eqriv 2619	1 ⊢ ∪ Tarski = V

Syntax hints:   ↔ wb 196   ∨ wo 383   ∧ wa 384   ∧ w3a 1037   = wceq 1483  ∃wex 1704   ∈ wcel 1990  ∀wral 2912  ∃wrex 2913  Vcvv 3200   ⊆ wss 3574  𝒫 cpw 4158  ∪ cuni 4436   class class class wbr 4653   ≈ cen 7952  Tarskictsk 9570

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-groth 9645

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-rex 2918  df-rab 2921  df-v 3202  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-tsk 9571

This theorem is referenced by:  inaprc  9658  tskmval  9661  tskmcl  9663