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Theorem tpstop 16677
Description: The topology extractor on a topological space is a topology. (Contributed by FL, 27-Jun-2014.)
Hypothesis
Ref Expression
tpstop.j  |-  J  =  ( TopOpen `  K )
Assertion
Ref Expression
tpstop  |-  ( K  e.  TopSp  ->  J  e.  Top )

Proof of Theorem tpstop
StepHypRef Expression
1 eqid 2283 . . 3  |-  ( Base `  K )  =  (
Base `  K )
2 tpstop.j . . 3  |-  J  =  ( TopOpen `  K )
31, 2istps2 16675 . 2  |-  ( K  e.  TopSp 
<->  ( J  e.  Top  /\  ( Base `  K
)  =  U. J
) )
43simplbi 446 1  |-  ( K  e.  TopSp  ->  J  e.  Top )
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1623    e. wcel 1684   U.cuni 3827   ` cfv 5255   Basecbs 13148   TopOpenctopn 13326   Topctop 16631   TopSpctps 16634
This theorem is referenced by:  mreclatdemo  16833  prdstmdd  17806  invrcn  17863  prdsxmslem2  18075  rlmbn  18778
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-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-rab 2552  df-v 2790  df-sbc 2992  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-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-iota 5219  df-fun 5257  df-fv 5263  df-top 16636  df-topon 16639  df-topsp 16640
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