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Theorem 2onetap 7574
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 6756 . . . . 5  |-  2o  e.  om
2 elnn 4730 . . . . 5  |-  ( ( x  e.  2o  /\  2o  e.  om )  ->  x  e.  om )
31, 2mpan2 425 . . . 4  |-  ( x  e.  2o  ->  x  e.  om )
4 elnn 4730 . . . . 5  |-  ( ( y  e.  2o  /\  2o  e.  om )  -> 
y  e.  om )
51, 4mpan2 425 . . . 4  |-  ( y  e.  2o  ->  y  e.  om )
6 nndceq 6734 . . . 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 2630 . 2  |-  A. x  e.  2o  A. y  e.  2o DECID  x  =  y
9 netap 7573 . 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 2205    =/= wne 2414   A.wral 2522   {copab 4172   omcom 4714   2oc2o 6643   TAp wtap 7567
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 2207  ax-14 2208  ax-ext 2216  ax-sep 4230  ax-nul 4238  ax-pow 4289  ax-pr 4324  ax-un 4556  ax-setind 4661  ax-iinf 4712
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 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-ral 2527  df-rex 2528  df-v 2817  df-dif 3215  df-un 3217  df-in 3219  df-ss 3226  df-nul 3511  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-int 3952  df-br 4112  df-opab 4174  df-tr 4211  df-iord 4489  df-on 4491  df-suc 4494  df-iom 4715  df-xp 4757  df-1o 6649  df-2o 6650  df-pap 7561  df-tap 7568
This theorem is referenced by:  2omotaplemst  7577
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