Theorem pw0ss 16307

Description: There are no inhabited subsets of the empty set. (Contributed by Jim Kingdon, 31-Dec-2025.)

Assertion

Ref	Expression
pw0ss	|- { s e. ~P (/) | E. j j e. s } = (/)

Distinct variable group:   j, s

Proof of Theorem pw0ss

Step	Hyp	Ref	Expression
1		pw0 3860	. . 3 |- ~P (/) = { (/) }
2	1	rabeqi 2814	. 2 |- { s e. ~P (/) | E. j j e. s } = { s e. { (/) } | E. j j e. s }
3		rabeq0 3552	. . 3 |- ( { s e. { (/) } | E. j j e. s } = (/) <-> A. s e. { (/) } -. E. j j e. s )
4		elsni 3726	. . . 4 |- ( s e. { (/) } -> s = (/) )
5		notm0 3542	. . . 4 |- ( -. E. j j e. s <-> s = (/) )
6	4, 5	sylibr 134	. . 3 |- ( s e. { (/) } -> -. E. j j e. s )
7	3, 6	mprgbir 2608	. 2 |- { s e. { (/) } | E. j j e. s } = (/)
8	2, 7	eqtri 2259	1 |- { s e. ~P (/) | E. j j e. s } = (/)

Syntax hints:   -. wn 3   = wceq 1402   E.wex 1545   e. wcel 2209   {crab 2532   (/)c0 3520   ~Pcpw 3688   {csn 3708

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-ext 2220

This theorem depends on definitions:  df-bi 117  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rab 2537  df-v 2823  df-dif 3222  df-in 3226  df-ss 3233  df-nul 3521  df-pw 3690  df-sn 3714

This theorem is referenced by:  uhgr0vb  16308  uhgr0  16309