Theorem tsettps 22767

Description: If the topology component is already correctly truncated, then it forms a topological space (with the topology extractor function coming out the same as the component). (Contributed by Mario Carneiro, 13-Aug-2015.)

Hypotheses

Ref	Expression
tsettps.a	⊢ 𝐴 = (Base‘𝐾)
tsettps.j	⊢ 𝐽 = (TopSet‘𝐾)

Assertion

Ref	Expression
tsettps	⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐾 ∈ TopSp)

Proof of Theorem tsettps

Step	Hyp	Ref	Expression
1		tsettps.a	. . . 4 ⊢ 𝐴 = (Base‘𝐾)
2		tsettps.j	. . . 4 ⊢ 𝐽 = (TopSet‘𝐾)
3	1, 2	topontopn 22766	. . 3 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐽 = (TopOpen‘𝐾))
4		id 22	. . 3 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐽 ∈ (TopOn‘𝐴))
5	3, 4	eqeltrrd 2826	. 2 ⊢ (𝐽 ∈ (TopOn‘𝐴) → (TopOpen‘𝐾) ∈ (TopOn‘𝐴))
6		eqid 2724	. . 3 ⊢ (TopOpen‘𝐾) = (TopOpen‘𝐾)
7	1, 6	istps 22760	. 2 ⊢ (𝐾 ∈ TopSp ↔ (TopOpen‘𝐾) ∈ (TopOn‘𝐴))
8	5, 7	sylibr 233	1 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐾 ∈ TopSp)

Syntax hints:   → wi 4   = wceq 1533   ∈ wcel 2098  ‘cfv 6534  Basecbs 17145  TopSetcts 17204  TopOpenctopn 17368  TopOnctopon 22736  TopSpctps 22758

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1905  ax-6 1963  ax-7 2003  ax-8 2100  ax-9 2108  ax-10 2129  ax-11 2146  ax-12 2163  ax-ext 2695  ax-rep 5276  ax-sep 5290  ax-nul 5297  ax-pow 5354  ax-pr 5418  ax-un 7719

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 845  df-3an 1086  df-tru 1536  df-fal 1546  df-ex 1774  df-nf 1778  df-sb 2060  df-mo 2526  df-eu 2555  df-clab 2702  df-cleq 2716  df-clel 2802  df-nfc 2877  df-ne 2933  df-ral 3054  df-rex 3063  df-reu 3369  df-rab 3425  df-v 3468  df-sbc 3771  df-csb 3887  df-dif 3944  df-un 3946  df-in 3948  df-ss 3958  df-nul 4316  df-if 4522  df-pw 4597  df-sn 4622  df-pr 4624  df-op 4628  df-uni 4901  df-iun 4990  df-br 5140  df-opab 5202  df-mpt 5223  df-id 5565  df-xp 5673  df-rel 5674  df-cnv 5675  df-co 5676  df-dm 5677  df-rn 5678  df-res 5679  df-ima 5680  df-iota 6486  df-fun 6536  df-fn 6537  df-f 6538  df-f1 6539  df-fo 6540  df-f1o 6541  df-fv 6542  df-ov 7405  df-oprab 7406  df-mpo 7407  df-1st 7969  df-2nd 7970  df-rest 17369  df-topn 17370  df-top 22720  df-topon 22737  df-topsp 22759

This theorem is referenced by:  eltpsg  22769  eltpsgOLD  22770  indistpsALT  22840  indistpsALTOLD  22841  xrstps  23037  prdstps  23457