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Theorem pw1ne3 7342
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 6528 . . . . 5  |-  1o  e.  2o
2 ssnel 4617 . . . . 5  |-  ( 2o  C_  1o  ->  -.  1o  e.  2o )
31, 2mt2 641 . . . 4  |-  -.  2o  C_  1o
4 2onn 6607 . . . . . 6  |-  2o  e.  om
54elexi 2784 . . . . 5  |-  2o  e.  _V
65elpw 3622 . . . 4  |-  ( 2o  e.  ~P 1o  <->  2o  C_  1o )
73, 6mtbir 673 . . 3  |-  -.  2o  e.  ~P 1o
85sucid 4464 . . . . 5  |-  2o  e.  suc  2o
9 df-3o 6504 . . . . 5  |-  3o  =  suc  2o
108, 9eleqtrri 2281 . . . 4  |-  2o  e.  3o
11 eleq2 2269 . . . 4  |-  ( ~P 1o  =  3o  ->  ( 2o  e.  ~P 1o  <->  2o  e.  3o ) )
1210, 11mpbiri 168 . . 3  |-  ( ~P 1o  =  3o  ->  2o  e.  ~P 1o )
137, 12mto 664 . 2  |-  -.  ~P 1o  =  3o
1413neir 2379 1  |-  ~P 1o  =/=  3o
Colors of variables: wff set class
Syntax hints:    = wceq 1373    e. wcel 2176    =/= wne 2376    C_ wss 3166   ~Pcpw 3616   suc csuc 4412   omcom 4638   1oc1o 6495   2oc2o 6496   3oc3o 6497
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 615  ax-in2 616  ax-io 711  ax-5 1470  ax-7 1471  ax-gen 1472  ax-ie1 1516  ax-ie2 1517  ax-8 1527  ax-10 1528  ax-11 1529  ax-i12 1530  ax-bndl 1532  ax-4 1533  ax-17 1549  ax-i9 1553  ax-ial 1557  ax-i5r 1558  ax-13 2178  ax-14 2179  ax-ext 2187  ax-sep 4162  ax-nul 4170  ax-pow 4218  ax-pr 4253  ax-un 4480  ax-setind 4585
This theorem depends on definitions:  df-bi 117  df-3an 983  df-tru 1376  df-nf 1484  df-sb 1786  df-clab 2192  df-cleq 2198  df-clel 2201  df-nfc 2337  df-ne 2377  df-ral 2489  df-rex 2490  df-v 2774  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-nul 3461  df-pw 3618  df-sn 3639  df-pr 3640  df-uni 3851  df-int 3886  df-tr 4143  df-iord 4413  df-on 4415  df-suc 4418  df-iom 4639  df-1o 6502  df-2o 6503  df-3o 6504
This theorem is referenced by:  3nelsucpw1  7346
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