Theorem grothtsk 10849

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 10838	. . . . 5 ⊢ ∃𝑥(𝑤 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥))
2		eltskg 10764	. . . . . . . . 9 ⊢ (𝑥 ∈ V → (𝑥 ∈ Tarski ↔ (∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥))))
3	2	elv 3464	. . . . . . . 8 ⊢ (𝑥 ∈ Tarski ↔ (∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥)))
4	3	anbi2i 623	. . . . . . 7 ⊢ ((𝑤 ∈ 𝑥 ∧ 𝑥 ∈ Tarski) ↔ (𝑤 ∈ 𝑥 ∧ (∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥))))
5		3anass 1094	. . . . . . 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))))
6	4, 5	bitr4i 278	. . . . . 6 ⊢ ((𝑤 ∈ 𝑥 ∧ 𝑥 ∈ Tarski) ↔ (𝑤 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥)))
7	6	exbii 1848	. . . . 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)))
8	1, 7	mpbir 231	. . . 4 ⊢ ∃𝑥(𝑤 ∈ 𝑥 ∧ 𝑥 ∈ Tarski)
9		eluni 4886	. . . 4 ⊢ (𝑤 ∈ ∪ Tarski ↔ ∃𝑥(𝑤 ∈ 𝑥 ∧ 𝑥 ∈ Tarski))
10	8, 9	mpbir 231	. . 3 ⊢ 𝑤 ∈ ∪ Tarski
11		vex 3463	. . 3 ⊢ 𝑤 ∈ V
12	10, 11	2th 264	. 2 ⊢ (𝑤 ∈ ∪ Tarski ↔ 𝑤 ∈ V)
13	12	eqriv 2732	1 ⊢ ∪ Tarski = V

Syntax hints:   ↔ wb 206   ∧ wa 395   ∨ wo 847   ∧ w3a 1086   = wceq 1540  ∃wex 1779   ∈ wcel 2108  ∀wral 3051  ∃wrex 3060  Vcvv 3459   ⊆ wss 3926  𝒫 cpw 4575  ∪ cuni 4883   class class class wbr 5119   ≈ cen 8956  Tarskictsk 10762

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-ext 2707  ax-groth 10837

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-sb 2065  df-clab 2714  df-cleq 2727  df-clel 2809  df-ral 3052  df-rex 3061  df-rab 3416  df-v 3461  df-dif 3929  df-un 3931  df-ss 3943  df-nul 4309  df-if 4501  df-pw 4577  df-sn 4602  df-pr 4604  df-op 4608  df-uni 4884  df-br 5120  df-tsk 10763

This theorem is referenced by:  inaprc  10850  tskmval  10853  tskmcl  10855