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Theorem nfopk 4068
Description: Bound-variable hypothesis builder for ordered pairs. (Contributed by NM, 14-Nov-1995.)
Hypotheses
Ref Expression
nfopk.1  F/_
nfopk.2  F/_
Assertion
Ref Expression
nfopk  F/_

Proof of Theorem nfopk
StepHypRef Expression
1 df-opk 4058 . 2
2 nfopk.1 . . . 4  F/_
32nfsn 3784 . . 3  F/_
4 nfopk.2 . . . 4  F/_
52, 4nfpr 3773 . . 3  F/_
63, 5nfpr 3773 . 2  F/_
71, 6nfcxfr 2486 1  F/_
Colors of variables: wff set class
Syntax hints:   F/_wnfc 2476  csn 3737  cpr 3738  copk 4057
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-6 1729  ax-7 1734  ax-11 1746  ax-12 1925  ax-ext 2334
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-nan 1288  df-tru 1319  df-ex 1542  df-nf 1545  df-sb 1649  df-clab 2340  df-cleq 2346  df-clel 2349  df-nfc 2478  df-v 2861  df-nin 3211  df-compl 3212  df-un 3214  df-sn 3741  df-pr 3742  df-opk 4058
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