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Theorem pw1ne3 7290
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 6495 . . . . 5  |-  1o  e.  2o
2 ssnel 4601 . . . . 5  |-  ( 2o  C_  1o  ->  -.  1o  e.  2o )
31, 2mt2 641 . . . 4  |-  -.  2o  C_  1o
4 2onn 6574 . . . . . 6  |-  2o  e.  om
54elexi 2772 . . . . 5  |-  2o  e.  _V
65elpw 3607 . . . 4  |-  ( 2o  e.  ~P 1o  <->  2o  C_  1o )
73, 6mtbir 672 . . 3  |-  -.  2o  e.  ~P 1o
85sucid 4448 . . . . 5  |-  2o  e.  suc  2o
9 df-3o 6471 . . . . 5  |-  3o  =  suc  2o
108, 9eleqtrri 2269 . . . 4  |-  2o  e.  3o
11 eleq2 2257 . . . 4  |-  ( ~P 1o  =  3o  ->  ( 2o  e.  ~P 1o  <->  2o  e.  3o ) )
1210, 11mpbiri 168 . . 3  |-  ( ~P 1o  =  3o  ->  2o  e.  ~P 1o )
137, 12mto 663 . 2  |-  -.  ~P 1o  =  3o
1413neir 2367 1  |-  ~P 1o  =/=  3o
Colors of variables: wff set class
Syntax hints:    = wceq 1364    e. wcel 2164    =/= wne 2364    C_ wss 3153   ~Pcpw 3601   suc csuc 4396   omcom 4622   1oc1o 6462   2oc2o 6463   3oc3o 6464
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 710  ax-5 1458  ax-7 1459  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-8 1515  ax-10 1516  ax-11 1517  ax-i12 1518  ax-bndl 1520  ax-4 1521  ax-17 1537  ax-i9 1541  ax-ial 1545  ax-i5r 1546  ax-13 2166  ax-14 2167  ax-ext 2175  ax-sep 4147  ax-nul 4155  ax-pow 4203  ax-pr 4238  ax-un 4464  ax-setind 4569
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1472  df-sb 1774  df-clab 2180  df-cleq 2186  df-clel 2189  df-nfc 2325  df-ne 2365  df-ral 2477  df-rex 2478  df-v 2762  df-dif 3155  df-un 3157  df-in 3159  df-ss 3166  df-nul 3447  df-pw 3603  df-sn 3624  df-pr 3625  df-uni 3836  df-int 3871  df-tr 4128  df-iord 4397  df-on 4399  df-suc 4402  df-iom 4623  df-1o 6469  df-2o 6470  df-3o 6471
This theorem is referenced by:  3nelsucpw1  7294
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