Theorem grothtsk 10787

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 10776	. . . . 5 ⊢ ∃𝑥(𝑤 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥))
2		eltskg 10702	. . . . . . . . 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 3458	. . . . . . . 8 ⊢ (𝑥 ∈ Tarski ↔ (∀𝑦 ∈ 𝑥 (𝒫 𝑦 ⊆ 𝑥 ∧ ∃𝑧 ∈ 𝑥 𝒫 𝑦 ⊆ 𝑧) ∧ ∀𝑦 ∈ 𝒫 𝑥(𝑦 ≈ 𝑥 ∨ 𝑦 ∈ 𝑥)))
4	3	anbi2i 632	. . . . . . 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 1105	. . . . . . 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 280	. . . . . 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 1867	. . . . 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 233	. . . 4 ⊢ ∃𝑥(𝑤 ∈ 𝑥 ∧ 𝑥 ∈ Tarski)
9		eluni 4865	. . . 4 ⊢ (𝑤 ∈ ∪ Tarski ↔ ∃𝑥(𝑤 ∈ 𝑥 ∧ 𝑥 ∈ Tarski))
10	8, 9	mpbir 233	. . 3 ⊢ 𝑤 ∈ ∪ Tarski
11		vex 3457	. . 3 ⊢ 𝑤 ∈ V
12	10, 11	2th 266	. 2 ⊢ (𝑤 ∈ ∪ Tarski ↔ 𝑤 ∈ V)
13	12	eqriv 2758	1 ⊢ ∪ Tarski = V

Syntax hints:   ↔ wb 208   ∧ wa 399   ∨ wo 858   ∧ w3a 1097   = wceq 1559  ∃wex 1798   ∈ wcel 2141  ∀wral 3075  ∃wrex 3085  Vcvv 3453   ⊆ wss 3902  𝒫 cpw 4552  ∪ cuni 4862   class class class wbr 5097   ≈ cen 8918  Tarskictsk 10700

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1814  ax-4 1828  ax-5 1929  ax-6 1986  ax-7 2027  ax-8 2143  ax-9 2151  ax-ext 2733  ax-groth 10775

This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1099  df-tru 1562  df-fal 1572  df-ex 1799  df-sb 2090  df-clab 2740  df-cleq 2753  df-clel 2836  df-ral 3076  df-rex 3086  df-rab 3414  df-v 3455  df-dif 3905  df-un 3907  df-ss 3919  df-nul 4284  df-if 4478  df-pw 4554  df-sn 4580  df-pr 4582  df-op 4586  df-uni 4863  df-br 5098  df-tsk 10701

This theorem is referenced by:  inaprc  10788  tskmval  10791  tskmcl  10793