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Mirrors > Home > ILE Home > Th. List > nffv | GIF version |
Description: Bound-variable hypothesis builder for function value. (Contributed by NM, 14-Nov-1995.) (Revised by Mario Carneiro, 15-Oct-2016.) |
Ref | Expression |
---|---|
nffv.1 | ⊢ Ⅎ𝑥𝐹 |
nffv.2 | ⊢ Ⅎ𝑥𝐴 |
Ref | Expression |
---|---|
nffv | ⊢ Ⅎ𝑥(𝐹‘𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-fv 5131 | . 2 ⊢ (𝐹‘𝐴) = (℩𝑦𝐴𝐹𝑦) | |
2 | nffv.2 | . . . 4 ⊢ Ⅎ𝑥𝐴 | |
3 | nffv.1 | . . . 4 ⊢ Ⅎ𝑥𝐹 | |
4 | nfcv 2281 | . . . 4 ⊢ Ⅎ𝑥𝑦 | |
5 | 2, 3, 4 | nfbr 3974 | . . 3 ⊢ Ⅎ𝑥 𝐴𝐹𝑦 |
6 | 5 | nfiotaw 5092 | . 2 ⊢ Ⅎ𝑥(℩𝑦𝐴𝐹𝑦) |
7 | 1, 6 | nfcxfr 2278 | 1 ⊢ Ⅎ𝑥(𝐹‘𝐴) |
Colors of variables: wff set class |
Syntax hints: Ⅎwnfc 2268 class class class wbr 3929 ℩cio 5086 ‘cfv 5123 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-rex 2422 df-v 2688 df-un 3075 df-sn 3533 df-pr 3534 df-op 3536 df-uni 3737 df-br 3930 df-iota 5088 df-fv 5131 |
This theorem is referenced by: nffvmpt1 5432 nffvd 5433 dffn5imf 5476 fvmptssdm 5505 fvmptf 5513 eqfnfv2f 5522 ralrnmpt 5562 rexrnmpt 5563 ffnfvf 5579 funiunfvdmf 5665 dff13f 5671 nfiso 5707 nfrecs 6204 nffrec 6293 nfseq 10228 seq3f1olemstep 10274 seq3f1olemp 10275 nfsum1 11125 nfsum 11126 fsumrelem 11240 nfcprod1 11323 nfcprod 11324 ctiunctlemfo 11952 ctiunct 11953 cnmpt11 12452 cnmpt21 12460 |
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