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Theorem tgtop11 14255
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 14247 . . 3  |-  ( J  e.  Top  ->  ( topGen `
 J )  =  J )
2 tgtop 14247 . . 3  |-  ( K  e.  Top  ->  ( topGen `
 K )  =  K )
31, 2eqeqan12d 2209 . 2  |-  ( ( J  e.  Top  /\  K  e.  Top )  ->  ( ( topGen `  J
)  =  ( topGen `  K )  <->  J  =  K ) )
43biimp3a 1356 1  |-  ( ( J  e.  Top  /\  K  e.  Top  /\  ( topGen `
 J )  =  ( topGen `  K )
)  ->  J  =  K )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ w3a 980    = wceq 1364    e. wcel 2164   ` cfv 5255   topGenctg 12868   Topctop 14176
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 710  ax-5 1458  ax-7 1459  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-8 1515  ax-10 1516  ax-11 1517  ax-i12 1518  ax-bndl 1520  ax-4 1521  ax-17 1537  ax-i9 1541  ax-ial 1545  ax-i5r 1546  ax-13 2166  ax-14 2167  ax-ext 2175  ax-sep 4148  ax-pow 4204  ax-pr 4239  ax-un 4465
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1472  df-sb 1774  df-eu 2045  df-mo 2046  df-clab 2180  df-cleq 2186  df-clel 2189  df-nfc 2325  df-ral 2477  df-rex 2478  df-v 2762  df-sbc 2987  df-un 3158  df-in 3160  df-ss 3167  df-pw 3604  df-sn 3625  df-pr 3626  df-op 3628  df-uni 3837  df-br 4031  df-opab 4092  df-mpt 4093  df-id 4325  df-xp 4666  df-rel 4667  df-cnv 4668  df-co 4669  df-dm 4670  df-iota 5216  df-fun 5257  df-fv 5263  df-topgen 12874  df-top 14177
This theorem is referenced by: (None)
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