Theorem pw1ne0 7340

Description: The power set of 1o is not zero. (Contributed by Jim Kingdon, 30-Jul-2024.)

Assertion

Ref	Expression
pw1ne0	|- ~P 1o =/= (/)

Proof of Theorem pw1ne0

Step	Hyp	Ref	Expression
1		0elpw 4208	. 2 |- (/) e. ~P 1o
2	1	ne0ii 3470	1 |- ~P 1o =/= (/)

Syntax hints:   =/= wne 2376   (/)c0 3460   ~Pcpw 3616   1oc1o 6495

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-ext 2187  ax-nul 4170

This theorem depends on definitions:  df-bi 117  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-v 2774  df-dif 3168  df-in 3172  df-ss 3179  df-nul 3461  df-pw 3618

This theorem is referenced by:  pw1nel3  7343  sucpw1nel3  7345