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Theorem 2onetap 7615
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 6788 . . . . 5  |-  2o  e.  om
2 elnn 4751 . . . . 5  |-  ( ( x  e.  2o  /\  2o  e.  om )  ->  x  e.  om )
31, 2mpan2 429 . . . 4  |-  ( x  e.  2o  ->  x  e.  om )
4 elnn 4751 . . . . 5  |-  ( ( y  e.  2o  /\  2o  e.  om )  -> 
y  e.  om )
51, 4mpan2 429 . . . 4  |-  ( y  e.  2o  ->  y  e.  om )
6 nndceq 6766 . . . 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 2636 . 2  |-  A. x  e.  2o  A. y  e.  2o DECID  x  =  y
9 netap 7614 . 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 846    e. wcel 2209    =/= wne 2420   A.wral 2528   {copab 4189   omcom 4735   2oc2o 6675   TAp wtap 7608
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 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4247  ax-nul 4257  ax-pow 4309  ax-pr 4344  ax-un 4576  ax-setind 4682  ax-iinf 4733
This theorem depends on definitions:  df-bi 117  df-dc 847  df-3or 1010  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-v 2823  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-pw 3690  df-sn 3714  df-pr 3715  df-op 3717  df-uni 3934  df-int 3969  df-br 4129  df-opab 4191  df-tr 4228  df-iord 4509  df-on 4511  df-suc 4514  df-iom 4736  df-xp 4778  df-1o 6681  df-2o 6682  df-pap 7602  df-tap 7609
This theorem is referenced by:  2omotaplemst  7618
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