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Theorem nfrmo1 2499
Description:  x is not free in  E* x  e.  A ph. (Contributed by NM, 16-Jun-2017.)
Assertion
Ref Expression
nfrmo1  |-  F/ x E* x  e.  A  ph

Proof of Theorem nfrmo1
StepHypRef Expression
1 df-rmo 2331 . 2  |-  ( E* x  e.  A  ph  <->  E* x ( x  e.  A  /\  ph )
)
2 nfmo1 1928 . 2  |-  F/ x E* x ( x  e.  A  /\  ph )
31, 2nfxfr 1379 1  |-  F/ x E* x  e.  A  ph
Colors of variables: wff set class
Syntax hints:    /\ wa 101   F/wnf 1365    e. wcel 1409   E*wmo 1917   E*wrmo 2326
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 103  ax-ia2 104  ax-ia3 105  ax-5 1352  ax-7 1353  ax-gen 1354  ax-ie1 1398  ax-ie2 1399  ax-4 1416  ax-ial 1443  ax-i5r 1444
This theorem depends on definitions:  df-bi 114  df-nf 1366  df-eu 1919  df-mo 1920  df-rmo 2331
This theorem is referenced by:  nfdisj1  3786
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