Theorem naecoms 2053

Description: A commutation rule for distinct variable specifiers. (Contributed by NM, 2-Jan-2002.)

Hypothesis

Ref	Expression
naecoms.1

Assertion

Ref	Expression
naecoms

Proof of Theorem naecoms

Step	Hyp	Ref	Expression
1		aecom 2051	. 2
2		naecoms.1	. 2
3	1, 2	sylnbir 307	1

Syntax hints:  -.wn 3  ->wi 4  A.wal 1393

This theorem is referenced by:  sb9  2169  eujustALT  2285  nfcvf2  2645  axpowndlem2  8994  wl-sbcom2d  30011  wl-mo2dnae  30019

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1618  ax-4 1631  ax-5 1704  ax-6 1747  ax-7 1790  ax-10 1837  ax-12 1854  ax-13 1999

This theorem depends on definitions:  df-bi 185  df-an 371  df-ex 1613  df-nf 1617