ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  nfov GIF version

Theorem nfov 6048
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 6047 . 2 (⊤ → 𝑥(𝐴𝐹𝐵))
87mptru 1406 1 𝑥(𝐴𝐹𝐵)
Colors of variables: wff set class
Syntax hints:  wtru 1398  wnfc 2361  (class class class)co 6018
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-ext 2213
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-rex 2516  df-v 2804  df-un 3204  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-br 4089  df-iota 5286  df-fv 5334  df-ov 6021
This theorem is referenced by:  csbov123g  6057  ovmpos  6145  ov2gf  6146  ovmpodxf  6147  ovmpodv2  6155  ovi3  6159  nfof  6241  offval2  6251  caucvgprprlemaddq  7928  nfseq  10720  fsumadd  11985  mertenslem2  12115  fprodrec  12208  fproddivapf  12210  oddpwdclemdvds  12760  oddpwdclemndvds  12761  pcmpt  12934  pcmptdvds  12936  cnmpt2t  15036  cnmptcom  15041  fsumcncntop  15310  dvmptfsum  15468  elplyd  15484
  Copyright terms: Public domain W3C validator