Metamath Proof Explorer < Previous   Next > Nearby theorems Mirrors  >  Home  >  MPE Home  >  Th. List  >  nfbrd Structured version   Unicode version

Theorem nfbrd 4258
 Description: Deduction version of bound-variable hypothesis builder nfbr 4259. (Contributed by NM, 13-Dec-2005.) (Revised by Mario Carneiro, 14-Oct-2016.)
Hypotheses
Ref Expression
nfbrd.2
nfbrd.3
nfbrd.4
Assertion
Ref Expression
nfbrd

Proof of Theorem nfbrd
StepHypRef Expression
1 df-br 4216 . 2
2 nfbrd.2 . . . 4
3 nfbrd.4 . . . 4
42, 3nfopd 4003 . . 3
5 nfbrd.3 . . 3
64, 5nfeld 2589 . 2
71, 6nfxfrd 1581 1
 Colors of variables: wff set class Syntax hints:   wi 4  wnf 1554   wcel 1726  wnfc 2561  cop 3819   class class class wbr 4215 This theorem is referenced by:  nfbr  4259 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1556  ax-5 1567  ax-17 1627  ax-9 1667  ax-8 1688  ax-6 1745  ax-7 1750  ax-11 1762  ax-12 1951  ax-ext 2419 This theorem depends on definitions:  df-bi 179  df-or 361  df-an 362  df-3an 939  df-tru 1329  df-ex 1552  df-nf 1555  df-sb 1660  df-clab 2425  df-cleq 2431  df-clel 2434  df-nfc 2563  df-rab 2716  df-v 2960  df-dif 3325  df-un 3327  df-in 3329  df-ss 3336  df-nul 3631  df-if 3742  df-sn 3822  df-pr 3823  df-op 3825  df-br 4216
 Copyright terms: Public domain W3C validator