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Theorem qtoptop 17391
Description: The quotient topology is a topology. (Contributed by Mario Carneiro, 23-Mar-2015.)
Hypothesis
Ref Expression
qtoptop.1  |-  X  = 
U. J
Assertion
Ref Expression
qtoptop  |-  ( ( J  e.  Top  /\  F  Fn  X )  ->  ( J qTop  F )  e.  Top )

Proof of Theorem qtoptop
StepHypRef Expression
1 simpl 443 . 2  |-  ( ( J  e.  Top  /\  F  Fn  X )  ->  J  e.  Top )
2 id 19 . . 3  |-  ( F  Fn  X  ->  F  Fn  X )
3 qtoptop.1 . . . 4  |-  X  = 
U. J
43topopn 16652 . . 3  |-  ( J  e.  Top  ->  X  e.  J )
5 fnex 5741 . . 3  |-  ( ( F  Fn  X  /\  X  e.  J )  ->  F  e.  _V )
62, 4, 5syl2anr 464 . 2  |-  ( ( J  e.  Top  /\  F  Fn  X )  ->  F  e.  _V )
7 fnfun 5341 . . 3  |-  ( F  Fn  X  ->  Fun  F )
87adantl 452 . 2  |-  ( ( J  e.  Top  /\  F  Fn  X )  ->  Fun  F )
9 qtoptop2 17390 . 2  |-  ( ( J  e.  Top  /\  F  e.  _V  /\  Fun  F )  ->  ( J qTop  F )  e.  Top )
101, 6, 8, 9syl3anc 1182 1  |-  ( ( J  e.  Top  /\  F  Fn  X )  ->  ( J qTop  F )  e.  Top )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 358    = wceq 1623    e. wcel 1684   _Vcvv 2788   U.cuni 3827   Fun wfun 5249    Fn wfn 5250  (class class class)co 5858   qTop cqtop 13406   Topctop 16631
This theorem is referenced by:  qtoptopon  17395  qtopkgen  17401
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1533  ax-5 1544  ax-17 1603  ax-9 1635  ax-8 1643  ax-13 1686  ax-14 1688  ax-6 1703  ax-7 1708  ax-11 1715  ax-12 1866  ax-ext 2264  ax-rep 4131  ax-sep 4141  ax-nul 4149  ax-pow 4188  ax-pr 4214  ax-un 4512
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3an 936  df-tru 1310  df-ex 1529  df-nf 1532  df-sb 1630  df-eu 2147  df-mo 2148  df-clab 2270  df-cleq 2276  df-clel 2279  df-nfc 2408  df-ne 2448  df-ral 2548  df-rex 2549  df-reu 2550  df-rab 2552  df-v 2790  df-sbc 2992  df-csb 3082  df-dif 3155  df-un 3157  df-in 3159  df-ss 3166  df-nul 3456  df-if 3566  df-pw 3627  df-sn 3646  df-pr 3647  df-op 3649  df-uni 3828  df-iun 3907  df-br 4024  df-opab 4078  df-mpt 4079  df-id 4309  df-xp 4695  df-rel 4696  df-cnv 4697  df-co 4698  df-dm 4699  df-rn 4700  df-res 4701  df-ima 4702  df-iota 5219  df-fun 5257  df-fn 5258  df-f 5259  df-f1 5260  df-fo 5261  df-f1o 5262  df-fv 5263  df-ov 5861  df-oprab 5862  df-mpt2 5863  df-qtop 13410  df-top 16636
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