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Theorem pw1ne3 7579
Description: The power set of  1o is not three. (Contributed by James E. Hanson and Jim Kingdon, 30-Jul-2024.)
Assertion
Ref Expression
pw1ne3  |-  ~P 1o  =/=  3o

Proof of Theorem pw1ne3
StepHypRef Expression
1 1lt2o 6705 . . . . 5  |-  1o  e.  2o
2 ssnel 4711 . . . . 5  |-  ( 2o  C_  1o  ->  -.  1o  e.  2o )
31, 2mt2 649 . . . 4  |-  -.  2o  C_  1o
4 2onn 6784 . . . . . 6  |-  2o  e.  om
54elexi 2834 . . . . 5  |-  2o  e.  _V
65elpw 3691 . . . 4  |-  ( 2o  e.  ~P 1o  <->  2o  C_  1o )
73, 6mtbir 682 . . 3  |-  -.  2o  e.  ~P 1o
85sucid 4557 . . . . 5  |-  2o  e.  suc  2o
9 df-3o 6679 . . . . 5  |-  3o  =  suc  2o
108, 9eleqtrri 2314 . . . 4  |-  2o  e.  3o
11 eleq2 2302 . . . 4  |-  ( ~P 1o  =  3o  ->  ( 2o  e.  ~P 1o  <->  2o  e.  3o ) )
1210, 11mpbiri 168 . . 3  |-  ( ~P 1o  =  3o  ->  2o  e.  ~P 1o )
137, 12mto 672 . 2  |-  -.  ~P 1o  =  3o
1413neir 2423 1  |-  ~P 1o  =/=  3o
Colors of variables: wff set class
Syntax hints:    = wceq 1402    e. wcel 2209    =/= wne 2420    C_ wss 3220   ~Pcpw 3685   suc csuc 4505   omcom 4732   1oc1o 6670   2oc2o 6671   3oc3o 6672
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 4244  ax-nul 4254  ax-pow 4306  ax-pr 4341  ax-un 4573  ax-setind 4679
This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  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 3687  df-sn 3711  df-pr 3712  df-uni 3931  df-int 3966  df-tr 4225  df-iord 4506  df-on 4508  df-suc 4511  df-iom 4733  df-1o 6677  df-2o 6678  df-3o 6679
This theorem is referenced by:  3nelsucpw1  7583
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