Theorem kqf 22349

Description: The Kolmogorov quotient is a topology on the quotient set. (Contributed by Mario Carneiro, 25-Aug-2015.)

Assertion

Ref	Expression
kqf	⊢ KQ:Top⟶Kol2

Proof of Theorem kqf

Dummy variables 𝑥 𝑦 𝑗 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		ovex 7183	. . 3 ⊢ (𝑗 qTop (𝑥 ∈ ∪ 𝑗 ↦ {𝑦 ∈ 𝑗 ∣ 𝑥 ∈ 𝑦})) ∈ V
2		df-kq 22296	. . 3 ⊢ KQ = (𝑗 ∈ Top ↦ (𝑗 qTop (𝑥 ∈ ∪ 𝑗 ↦ {𝑦 ∈ 𝑗 ∣ 𝑥 ∈ 𝑦})))
3	1, 2	fnmpti 6486	. 2 ⊢ KQ Fn Top
4		kqt0 22348	. . . 4 ⊢ (𝑥 ∈ Top ↔ (KQ‘𝑥) ∈ Kol2)
5	4	biimpi 218	. . 3 ⊢ (𝑥 ∈ Top → (KQ‘𝑥) ∈ Kol2)
6	5	rgen 3148	. 2 ⊢ ∀𝑥 ∈ Top (KQ‘𝑥) ∈ Kol2
7		ffnfv 6877	. 2 ⊢ (KQ:Top⟶Kol2 ↔ (KQ Fn Top ∧ ∀𝑥 ∈ Top (KQ‘𝑥) ∈ Kol2))
8	3, 6, 7	mpbir2an 709	1 ⊢ KQ:Top⟶Kol2

Syntax hints:   ∈ wcel 2110  ∀wral 3138  {crab 3142  ∪ cuni 4832   ↦ cmpt 5139   Fn wfn 6345  ⟶wf 6346  ‘cfv 6350  (class class class)co 7150   qTop cqtop 16770  Topctop 21495  Kol2ct0 21908  KQckq 22295

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2156  ax-12 2172  ax-ext 2793  ax-rep 5183  ax-sep 5196  ax-nul 5203  ax-pow 5259  ax-pr 5322  ax-un 7455

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-ral 3143  df-rex 3144  df-reu 3145  df-rab 3147  df-v 3497  df-sbc 3773  df-csb 3884  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4833  df-iun 4914  df-br 5060  df-opab 5122  df-mpt 5140  df-id 5455  df-xp 5556  df-rel 5557  df-cnv 5558  df-co 5559  df-dm 5560  df-rn 5561  df-res 5562  df-ima 5563  df-iota 6309  df-fun 6352  df-fn 6353  df-f 6354  df-f1 6355  df-fo 6356  df-f1o 6357  df-fv 6358  df-ov 7153  df-oprab 7154  df-mpo 7155  df-qtop 16774  df-top 21496  df-topon 21513  df-t0 21915  df-kq 22296

This theorem is referenced by: (None)