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Mirrors > Home > ILE Home > Th. List > ffvelrn | Unicode version |
Description: A function's value belongs to its codomain. (Contributed by NM, 12-Aug-1999.) |
Ref | Expression |
---|---|
ffvelrn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ffn 5272 | . . 3 | |
2 | fnfvelrn 5552 | . . 3 | |
3 | 1, 2 | sylan 281 | . 2 |
4 | frn 5281 | . . . 4 | |
5 | 4 | sseld 3096 | . . 3 |
6 | 5 | adantr 274 | . 2 |
7 | 3, 6 | mpd 13 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wcel 1480 crn 4540 wfn 5118 wf 5119 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-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-sep 4046 ax-pow 4098 ax-pr 4131 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-eu 2002 df-mo 2003 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ral 2421 df-rex 2422 df-v 2688 df-sbc 2910 df-un 3075 df-in 3077 df-ss 3084 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 df-uni 3737 df-br 3930 df-opab 3990 df-id 4215 df-xp 4545 df-rel 4546 df-cnv 4547 df-co 4548 df-dm 4549 df-rn 4550 df-iota 5088 df-fun 5125 df-fn 5126 df-f 5127 df-fv 5131 |
This theorem is referenced by: ffvelrni 5554 ffvelrnda 5555 dffo3 5567 ffnfv 5578 ffvresb 5583 fcompt 5590 fsn2 5594 fvconst 5608 foco2 5655 fcofo 5685 cocan1 5688 isocnv 5712 isores2 5714 isopolem 5723 isosolem 5725 fovrn 5913 off 5994 mapsncnv 6589 2dom 6699 enm 6714 xpdom2 6725 xpmapenlem 6743 fiintim 6817 isotilem 6893 updjudhf 6964 exmidomniim 7013 shftf 10602 summodclem2a 11150 isumcl 11194 mertenslem2 11305 nn0seqcvgd 11722 algrf 11726 eucalg 11740 phimullem 11901 upxp 12441 uptx 12443 txhmeo 12488 cncfmet 12748 dvaddxxbr 12834 dvcj 12842 dvfre 12843 |
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