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Theorem tg1 16702
 Description: Property of a member of a topology generated by a basis. (Contributed by NM, 20-Jul-2006.)
Assertion
Ref Expression
tg1

Proof of Theorem tg1
Dummy variables are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 elfvdm 5554 . 2
2 eltg2 16696 . . 3
32simprbda 606 . 2
41, 3mpancom 650 1
 Colors of variables: wff set class Syntax hints:   wi 4   wa 358   wcel 1684  wral 2543  wrex 2544   wss 3152  cuni 3827   cdm 4689  cfv 5255  ctg 13342 This theorem is referenced by:  tgcl  16707  ontgval  24870  intopcoaconlem3b  25538  intopcoaconlem3  25539 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-topgen 13344
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