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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 6117 | . 2 ⊢ (⊤ → Ⅎ𝑥(𝐴𝐹𝐵)) |
| 8 | 7 | mptru 1411 | 1 ⊢ Ⅎ𝑥(𝐴𝐹𝐵) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ⊤wtru 1403 Ⅎwnfc 2379 (class class class)co 6088 |
| 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 4132 df-iota 5340 df-fv 5388 df-ov 6091 |
| This theorem is used by: csbov123g 6127 ovmpos 6215 ov2gf 6216 ovmpodxf 6217 ovmpodv2 6225 ovi3 6229 nfof 6312 offval2 6322 caucvgprprlemaddq 8081 nfseq 10915 fsumadd 12198 mertenslem2 12328 fprodrec 12421 fproddivapf 12423 nnmaxpwlemdvds 12974 nnmaxpwlemndvds 12975 pcmpt 13151 pcmptdvds 13153 gsummptfidmadd 14251 gsum2d2fi 14274 gsumcom2fi 14275 cnmpt2t 15519 cnmptcom 15524 fsumcncntop 15793 dvmptfsum 15951 elplyd 15967 |
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