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Theorem 2onetap 7565
Description: Negated equality is a tight apartness on  2o. (Contributed by Jim Kingdon, 6-Feb-2025.)
Assertion
Ref Expression
2onetap  |-  { <. u ,  v >.  |  ( ( u  e.  2o  /\  v  e.  2o )  /\  u  =/=  v
) } TAp  2o
Distinct variable group:    v, u

Proof of Theorem 2onetap
Dummy variables  x  y are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 2onn 6753 . . . . 5  |-  2o  e.  om
2 elnn 4727 . . . . 5  |-  ( ( x  e.  2o  /\  2o  e.  om )  ->  x  e.  om )
31, 2mpan2 425 . . . 4  |-  ( x  e.  2o  ->  x  e.  om )
4 elnn 4727 . . . . 5  |-  ( ( y  e.  2o  /\  2o  e.  om )  -> 
y  e.  om )
51, 4mpan2 425 . . . 4  |-  ( y  e.  2o  ->  y  e.  om )
6 nndceq 6731 . . . 4  |-  ( ( x  e.  om  /\  y  e.  om )  -> DECID  x  =  y )
73, 5, 6syl2an 289 . . 3  |-  ( ( x  e.  2o  /\  y  e.  2o )  -> DECID  x  =  y )
87rgen2 2628 . 2  |-  A. x  e.  2o  A. y  e.  2o DECID  x  =  y
9 netap 7564 . 2  |-  ( A. x  e.  2o  A. y  e.  2o DECID  x  =  y  ->  { <. u ,  v
>.  |  ( (
u  e.  2o  /\  v  e.  2o )  /\  u  =/=  v
) } TAp  2o )
108, 9ax-mp 5 1  |-  { <. u ,  v >.  |  ( ( u  e.  2o  /\  v  e.  2o )  /\  u  =/=  v
) } TAp  2o
Colors of variables: wff set class
Syntax hints:    /\ wa 104  DECID wdc 842    e. wcel 2203    =/= wne 2412   A.wral 2520   {copab 4169   omcom 4711   2oc2o 6640   TAp wtap 7559
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-in1 619  ax-in2 620  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 2205  ax-14 2206  ax-ext 2214  ax-sep 4227  ax-nul 4235  ax-pow 4286  ax-pr 4321  ax-un 4553  ax-setind 4658  ax-iinf 4709
This theorem depends on definitions:  df-bi 117  df-dc 843  df-3or 1006  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-ral 2525  df-rex 2526  df-v 2814  df-dif 3212  df-un 3214  df-in 3216  df-ss 3223  df-nul 3508  df-pw 3670  df-sn 3694  df-pr 3695  df-op 3697  df-uni 3914  df-int 3949  df-br 4109  df-opab 4171  df-tr 4208  df-iord 4486  df-on 4488  df-suc 4491  df-iom 4712  df-xp 4754  df-1o 6646  df-2o 6647  df-pap 7558  df-tap 7560
This theorem is referenced by:  2omotaplemst  7568
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