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Theorem tgtop11 14958
Description: The topology generation function is one-to-one when applied to completed topologies. (Contributed by NM, 18-Jul-2006.)
Assertion
Ref Expression
tgtop11  |-  ( ( J  e.  Top  /\  K  e.  Top  /\  ( topGen `
 J )  =  ( topGen `  K )
)  ->  J  =  K )

Proof of Theorem tgtop11
StepHypRef Expression
1 tgtop 14950 . . 3  |-  ( J  e.  Top  ->  ( topGen `
 J )  =  J )
2 tgtop 14950 . . 3  |-  ( K  e.  Top  ->  ( topGen `
 K )  =  K )
31, 2eqeqan12d 2250 . 2  |-  ( ( J  e.  Top  /\  K  e.  Top )  ->  ( ( topGen `  J
)  =  ( topGen `  K )  <->  J  =  K ) )
43biimp3a 1382 1  |-  ( ( J  e.  Top  /\  K  e.  Top  /\  ( topGen `
 J )  =  ( topGen `  K )
)  ->  J  =  K )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ w3a 1005    = wceq 1398    e. wcel 2205   ` cfv 5354   topGenctg 13484   Topctop 14879
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-sep 4230  ax-pow 4289  ax-pr 4324  ax-un 4556
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ral 2527  df-rex 2528  df-v 2817  df-sbc 3045  df-un 3217  df-in 3219  df-ss 3226  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-br 4112  df-opab 4174  df-mpt 4175  df-id 4416  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-iota 5314  df-fun 5356  df-fv 5362  df-topgen 13490  df-top 14880
This theorem is referenced by: (None)
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