Theorem tskmcl 10827

Description: A Tarski class that contains 𝐴 is a Tarski class. (Contributed by FL, 17-Apr-2011.) (Proof shortened by Mario Carneiro, 21-Sep-2014.)

Assertion

Ref	Expression
tskmcl	⊢ (tarskiMap‘𝐴) ∈ Tarski

Proof of Theorem tskmcl

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		tskmval 10825	. . 3 ⊢ (𝐴 ∈ V → (tarskiMap‘𝐴) = ∩ {𝑥 ∈ Tarski ∣ 𝐴 ∈ 𝑥})
2		ssrab2 4035	. . . 4 ⊢ {𝑥 ∈ Tarski ∣ 𝐴 ∈ 𝑥} ⊆ Tarski
3		id 23	. . . . . . 7 ⊢ (𝐴 ∈ V → 𝐴 ∈ V)
4		grothtsk 10821	. . . . . . 7 ⊢ ∪ Tarski = V
5	3, 4	eleqtrrdi 2874	. . . . . 6 ⊢ (𝐴 ∈ V → 𝐴 ∈ ∪ Tarski)
6		eluni2 4877	. . . . . 6 ⊢ (𝐴 ∈ ∪ Tarski ↔ ∃𝑥 ∈ Tarski 𝐴 ∈ 𝑥)
7	5, 6	sylib 221	. . . . 5 ⊢ (𝐴 ∈ V → ∃𝑥 ∈ Tarski 𝐴 ∈ 𝑥)
8		rabn0 4347	. . . . 5 ⊢ ({𝑥 ∈ Tarski ∣ 𝐴 ∈ 𝑥} ≠ ∅ ↔ ∃𝑥 ∈ Tarski 𝐴 ∈ 𝑥)
9	7, 8	sylibr 237	. . . 4 ⊢ (𝐴 ∈ V → {𝑥 ∈ Tarski ∣ 𝐴 ∈ 𝑥} ≠ ∅)
10		inttsk 10760	. . . 4 ⊢ (({𝑥 ∈ Tarski ∣ 𝐴 ∈ 𝑥} ⊆ Tarski ∧ {𝑥 ∈ Tarski ∣ 𝐴 ∈ 𝑥} ≠ ∅) → ∩ {𝑥 ∈ Tarski ∣ 𝐴 ∈ 𝑥} ∈ Tarski)
11	2, 9, 10	sylancr 598	. . 3 ⊢ (𝐴 ∈ V → ∩ {𝑥 ∈ Tarski ∣ 𝐴 ∈ 𝑥} ∈ Tarski)
12	1, 11	eqeltrd 2863	. 2 ⊢ (𝐴 ∈ V → (tarskiMap‘𝐴) ∈ Tarski)
13		fvprc 6875	. . 3 ⊢ (¬ 𝐴 ∈ V → (tarskiMap‘𝐴) = ∅)
14		0tsk 10741	. . 3 ⊢ ∅ ∈ Tarski
15	13, 14	eqeltrdi 2871	. 2 ⊢ (¬ 𝐴 ∈ V → (tarskiMap‘𝐴) ∈ Tarski)
16	12, 15	pm2.61i 184	1 ⊢ (tarskiMap‘𝐴) ∈ Tarski

Syntax hints:  ¬ wn 3   ∈ wcel 2143   ≠ wne 2958  ∃wrex 3089  {crab 3416  Vcvv 3455   ⊆ wss 3906  ∅c0 4287  ∪ cuni 4873  ∩ cint 4913  ‘cfv 6538  Tarskictsk 10734  tarskiMapctskm 10823

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-sep 5258  ax-nul 5270  ax-pow 5338  ax-pr 5406  ax-un 7734  ax-groth 10809

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-nf 1814  df-sb 2097  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-ral 3080  df-rex 3090  df-rab 3417  df-v 3457  df-dif 3909  df-un 3911  df-in 3913  df-ss 3923  df-nul 4288  df-if 4489  df-pw 4565  df-sn 4591  df-pr 4593  df-op 4597  df-uni 4874  df-int 4914  df-br 5111  df-opab 5175  df-mpt 5194  df-id 5558  df-xp 5669  df-rel 5670  df-cnv 5671  df-co 5672  df-dm 5673  df-rn 5674  df-res 5675  df-ima 5676  df-iota 6494  df-fun 6540  df-fn 6541  df-f 6542  df-f1 6543  df-fo 6544  df-f1o 6545  df-fv 6546  df-er 8695  df-en 8945  df-dom 8946  df-tsk 10735  df-tskm 10824

This theorem is referenced by:  eltskm  10829