Theorem grothtsk 9536

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

Step	Hyp	Ref	Expression
1		axgroth5 9525	. . . . 5 ⊢ ∃𝑥(𝑤 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥))
2		vex 3176	. . . . . . . . 9 ⊢ 𝑥 ∈ V
3		eltskg 9451	. . . . . . . . 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 726	. . . . . . 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 1035	. . . . . . 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 266	. . . . . 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 1764	. . . . 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 220	. . . 4 ⊢ ∃𝑥(𝑤 ∈ 𝑥 ∧ 𝑥 ∈ Tarski)
10		eluni 4375	. . . 4 ⊢ (𝑤 ∈ ∪ Tarski ↔ ∃𝑥(𝑤 ∈ 𝑥 ∧ 𝑥 ∈ Tarski))
11	9, 10	mpbir 220	. . 3 ⊢ 𝑤 ∈ ∪ Tarski
12		vex 3176	. . 3 ⊢ 𝑤 ∈ V
13	11, 12	2th 253	. 2 ⊢ (𝑤 ∈ ∪ Tarski ↔ 𝑤 ∈ V)
14	13	eqriv 2607	1 ⊢ ∪ Tarski = V

Syntax hints:   ↔ wb 195   ∨ wo 382   ∧ wa 383   ∧ w3a 1031   = wceq 1475  ∃wex 1695   ∈ wcel 1977  ∀wral 2896  ∃wrex 2897  Vcvv 3173   ⊆ wss 3540  𝒫 cpw 4108  ∪ cuni 4372   class class class wbr 4583   ≈ cen 7838  Tarskictsk 9449

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  ax-groth 9524

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  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-rex 2902  df-rab 2905  df-v 3175  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-br 4584  df-tsk 9450

This theorem is referenced by:  inaprc  9537  tskmval  9540  tskmcl  9542