Theorem elisset 2836

Description: An element of a class exists. (Contributed by NM, 1-May-1995.)

Assertion

Ref	Expression
elisset	|- ( A e. V -> E. x x = A )

Distinct variable group:   x, A

Allowed substitution hint:   V( x)

Proof of Theorem elisset

Step	Hyp	Ref	Expression
1		elex 2833	. 2 |- ( A e. V -> A e. _V )
2		isset 2828	. 2 |- ( A e. _V <-> E. x x = A )
3	1, 2	sylib 122	1 |- ( A e. V -> E. x x = A )

Syntax hints:   -> wi 4   = wceq 1402   E.wex 1545   e. wcel 2209   _Vcvv 2821

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-5 1500  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-ext 2220

This theorem depends on definitions:  df-bi 117  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-v 2823

This theorem is referenced by:  elex22  2837  elex2  2838  ceqsalt  2848  ceqsalg  2850  cgsexg  2857  cgsex2g  2858  cgsex4g  2859  vtoclgft  2873  vtocleg  2896  vtoclegft  2897  spc2egv  2915  spc2gv  2916  spc3egv  2917  spc3gv  2918  eqvincg  2950  tpid3g  3823  iinexgm  4285  copsex2t  4380  copsex2g  4381  ralxfr2d  4605  rexxfr2d  4606  fliftf  5995  eloprabga  6165  ovmpt4g  6201  spc2ed  6459  eroveu  6890  supelti  7332  genpassl  7881  genpassu  7882  eqord1  8801  nn1suc  9302  bj-inex  16847