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Mirrors > Home > ILE Home > Th. List > nfov | GIF version |
Description: Bound-variable hypothesis builder for operation value. (Contributed by NM, 4-May-2004.) |
Ref | Expression |
---|---|
nfov.1 | ⊢ Ⅎ𝑥𝐴 |
nfov.2 | ⊢ Ⅎ𝑥𝐹 |
nfov.3 | ⊢ Ⅎ𝑥𝐵 |
Ref | Expression |
---|---|
nfov | ⊢ Ⅎ𝑥(𝐴𝐹𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfov.1 | . . . 4 ⊢ Ⅎ𝑥𝐴 | |
2 | 1 | a1i 9 | . . 3 ⊢ (⊤ → Ⅎ𝑥𝐴) |
3 | nfov.2 | . . . 4 ⊢ Ⅎ𝑥𝐹 | |
4 | 3 | a1i 9 | . . 3 ⊢ (⊤ → Ⅎ𝑥𝐹) |
5 | nfov.3 | . . . 4 ⊢ Ⅎ𝑥𝐵 | |
6 | 5 | a1i 9 | . . 3 ⊢ (⊤ → Ⅎ𝑥𝐵) |
7 | 2, 4, 6 | nfovd 5907 | . 2 ⊢ (⊤ → Ⅎ𝑥(𝐴𝐹𝐵)) |
8 | 7 | mptru 1362 | 1 ⊢ Ⅎ𝑥(𝐴𝐹𝐵) |
Colors of variables: wff set class |
Syntax hints: ⊤wtru 1354 Ⅎwnfc 2306 (class class class)co 5878 |
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 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-ext 2159 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-rex 2461 df-v 2741 df-un 3135 df-sn 3600 df-pr 3601 df-op 3603 df-uni 3812 df-br 4006 df-iota 5180 df-fv 5226 df-ov 5881 |
This theorem is referenced by: csbov123g 5916 ovmpos 6001 ov2gf 6002 ovmpodxf 6003 ovmpodv2 6011 ovi3 6014 nfof 6091 offval2 6101 caucvgprprlemaddq 7710 nfseq 10458 fsumadd 11417 mertenslem2 11547 fprodrec 11640 fproddivapf 11642 oddpwdclemdvds 12173 oddpwdclemndvds 12174 pcmpt 12344 pcmptdvds 12346 cnmpt2t 13933 cnmptcom 13938 fsumcncntop 14196 |
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