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Theorem hmeocnvb 12859
Description: The converse of a homeomorphism is a homeomorphism. (Contributed by FL, 5-Mar-2007.) (Revised by Mario Carneiro, 23-Aug-2015.)
Assertion
Ref Expression
hmeocnvb  |-  ( Rel 
F  ->  ( `' F  e.  ( J Homeo K )  <->  F  e.  ( K Homeo J ) ) )

Proof of Theorem hmeocnvb
StepHypRef Expression
1 hmeocnv 12848 . . 3  |-  ( `' F  e.  ( J
Homeo K )  ->  `' `' F  e.  ( K Homeo J ) )
2 dfrel2 5048 . . . 4  |-  ( Rel 
F  <->  `' `' F  =  F
)
3 eleq1 2227 . . . 4  |-  ( `' `' F  =  F  ->  ( `' `' F  e.  ( K Homeo J )  <-> 
F  e.  ( K
Homeo J ) ) )
42, 3sylbi 120 . . 3  |-  ( Rel 
F  ->  ( `' `' F  e.  ( K Homeo J )  <->  F  e.  ( K Homeo J ) ) )
51, 4syl5ib 153 . 2  |-  ( Rel 
F  ->  ( `' F  e.  ( J Homeo K )  ->  F  e.  ( K Homeo J ) ) )
6 hmeocnv 12848 . 2  |-  ( F  e.  ( K Homeo J )  ->  `' F  e.  ( J Homeo K ) )
75, 6impbid1 141 1  |-  ( Rel 
F  ->  ( `' F  e.  ( J Homeo K )  <->  F  e.  ( K Homeo J ) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 104    = wceq 1342    e. wcel 2135   `'ccnv 4597   Rel wrel 4603  (class class class)co 5836   Homeochmeo 12841
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 604  ax-in2 605  ax-io 699  ax-5 1434  ax-7 1435  ax-gen 1436  ax-ie1 1480  ax-ie2 1481  ax-8 1491  ax-10 1492  ax-11 1493  ax-i12 1494  ax-bndl 1496  ax-4 1497  ax-17 1513  ax-i9 1517  ax-ial 1521  ax-i5r 1522  ax-13 2137  ax-14 2138  ax-ext 2146  ax-sep 4094  ax-pow 4147  ax-pr 4181  ax-un 4405  ax-setind 4508
This theorem depends on definitions:  df-bi 116  df-3an 969  df-tru 1345  df-fal 1348  df-nf 1448  df-sb 1750  df-eu 2016  df-mo 2017  df-clab 2151  df-cleq 2157  df-clel 2160  df-nfc 2295  df-ne 2335  df-ral 2447  df-rex 2448  df-rab 2451  df-v 2723  df-sbc 2947  df-csb 3041  df-dif 3113  df-un 3115  df-in 3117  df-ss 3124  df-pw 3555  df-sn 3576  df-pr 3577  df-op 3579  df-uni 3784  df-iun 3862  df-br 3977  df-opab 4038  df-mpt 4039  df-id 4265  df-xp 4604  df-rel 4605  df-cnv 4606  df-co 4607  df-dm 4608  df-rn 4609  df-res 4610  df-ima 4611  df-iota 5147  df-fun 5184  df-fn 5185  df-f 5186  df-fv 5190  df-ov 5839  df-oprab 5840  df-mpo 5841  df-1st 6100  df-2nd 6101  df-map 6607  df-top 12537  df-topon 12550  df-cn 12729  df-hmeo 12842
This theorem is referenced by: (None)
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