Theorem snm 3696

Description: The singleton of a set is inhabited. (Contributed by Jim Kingdon, 11-Aug-2018.)

Hypothesis

Ref	Expression
snnz.1	|- A e. _V

Assertion

Ref	Expression
snm	|- E. x x e. { A }

Distinct variable group:   x, A

Proof of Theorem snm

Step	Hyp	Ref	Expression
1		snnz.1	. 2 |- A e. _V
2		snmg 3694	. 2 |- ( A e. _V -> E. x x e. { A } )
3	1, 2	ax-mp 5	1 |- E. x x e. { A }

Syntax hints:   E.wex 1480   e. wcel 2136   _Vcvv 2726   {csn 3576

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-ext 2147

This theorem depends on definitions:  df-bi 116  df-tru 1346  df-nf 1449  df-sb 1751  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2297  df-v 2728  df-sn 3582

This theorem is referenced by:  mss  4204  ssfilem  6841  diffitest  6853  djuexb  7009  exmidonfinlem  7149  exmidfodomrlemim  7157  cc2lem  7207