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

Theorem nfov 6115
Description: Bound-variable hypothesis builder for operation value. (Contributed by NM, 4-May-2004.)
Hypotheses
Ref Expression
nfov.1 Ⅎ𝑥𝐴
nfov.2 Ⅎ𝑥𝐹
nfov.3 Ⅎ𝑥𝐵
Assertion
Ref Expression
nfov Ⅎ𝑥(𝐴𝐹𝐵)

Proof of Theorem nfov
StepHypRef Expression
1 nfov.1 . . . 4 Ⅎ𝑥𝐴
21a1i 9 . . 3 (⊤ → Ⅎ𝑥𝐴)
3 nfov.2 . . . 4 Ⅎ𝑥𝐹
43a1i 9 . . 3 (⊤ → Ⅎ𝑥𝐹)
5 nfov.3 . . . 4 Ⅎ𝑥𝐵
65a1i 9 . . 3 (⊤ → Ⅎ𝑥𝐵)
72, 4, 6nfovd 6114 . 2 (⊤ → Ⅎ𝑥(𝐴𝐹𝐵))
87mptru 1411 1 Ⅎ𝑥(𝐴𝐹𝐵)
Colors of variables:    wff set class
This proof depends on syntax axioms:  ⊤wtru 1403  Ⅎwnfc 2379  (class class class)co 6085
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-rex 2534  df-v 2823  df-un 3224  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-br 4131  df-iota 5337  df-fv 5385  df-ov 6088
This theorem is used by:  csbov123g  6124  ovmpos  6212  ov2gf  6213  ovmpodxf  6214  ovmpodv2  6222  ovi3  6226  nfof  6308  offval2  6318  caucvgprprlemaddq  8076  nfseq  10909  fsumadd  12192  mertenslem2  12322  fprodrec  12415  fproddivapf  12417  nnmaxpwlemdvds  12968  nnmaxpwlemndvds  12969  pcmpt  13145  pcmptdvds  13147  gsummptfidmadd  14245  cnmpt2t  15485  cnmptcom  15490  fsumcncntop  15759  dvmptfsum  15917  elplyd  15933
  Copyright terms: Public domain W3C validator