Theorem uniexd 4403

Description: Deduction version of the ZF Axiom of Union in class notation. (Contributed by Glauco Siliprandi, 26-Jun-2021.)

Hypothesis

Ref	Expression
uniexd.1	|- ( ph -> A e. V )

Assertion

Ref	Expression
uniexd	|- ( ph -> U. A e. _V )

Proof of Theorem uniexd

Step	Hyp	Ref	Expression
1		uniexd.1	. 2 |- ( ph -> A e. V )
2		uniexg 4402	. 2 |- ( A e. V -> U. A e. _V )
3	1, 2	syl 14	1 |- ( ph -> U. A e. _V )

Syntax hints:   -> wi 4   e. wcel 2128   _Vcvv 2712   U.cuni 3774

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 1427  ax-7 1428  ax-gen 1429  ax-ie1 1473  ax-ie2 1474  ax-8 1484  ax-10 1485  ax-11 1486  ax-i12 1487  ax-bndl 1489  ax-4 1490  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-13 2130  ax-14 2131  ax-ext 2139  ax-sep 4085  ax-un 4396

This theorem depends on definitions:  df-bi 116  df-tru 1338  df-nf 1441  df-sb 1743  df-clab 2144  df-cleq 2150  df-clel 2153  df-nfc 2288  df-rex 2441  df-v 2714  df-uni 3775

This theorem is referenced by:  supex2g  6980