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Theorem nfov 6043
Description: Bound-variable hypothesis builder for operation value. (Contributed by NM, 4-May-2004.)
Hypotheses
Ref Expression
nfov.1 𝑥𝐴
nfov.2 𝑥𝐹
nfov.3 𝑥𝐵
Assertion
Ref Expression
nfov 𝑥(𝐴𝐹𝐵)

Proof of Theorem nfov
StepHypRef Expression
1 nfov.1 . . . 4 𝑥𝐴
21a1i 9 . . 3 (⊤ → 𝑥𝐴)
3 nfov.2 . . . 4 𝑥𝐹
43a1i 9 . . 3 (⊤ → 𝑥𝐹)
5 nfov.3 . . . 4 𝑥𝐵
65a1i 9 . . 3 (⊤ → 𝑥𝐵)
72, 4, 6nfovd 6042 . 2 (⊤ → 𝑥(𝐴𝐹𝐵))
87mptru 1404 1 𝑥(𝐴𝐹𝐵)
Colors of variables: wff set class
Syntax hints:  wtru 1396  wnfc 2359  (class class class)co 6013
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-ext 2211
This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-nf 1507  df-sb 1809  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-rex 2514  df-v 2802  df-un 3202  df-sn 3673  df-pr 3674  df-op 3676  df-uni 3892  df-br 4087  df-iota 5284  df-fv 5332  df-ov 6016
This theorem is referenced by:  csbov123g  6052  ovmpos  6140  ov2gf  6141  ovmpodxf  6142  ovmpodv2  6150  ovi3  6154  nfof  6236  offval2  6246  caucvgprprlemaddq  7918  nfseq  10709  fsumadd  11957  mertenslem2  12087  fprodrec  12180  fproddivapf  12182  oddpwdclemdvds  12732  oddpwdclemndvds  12733  pcmpt  12906  pcmptdvds  12908  cnmpt2t  15007  cnmptcom  15012  fsumcncntop  15281  dvmptfsum  15439  elplyd  15455
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