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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 5312 | . . 3 | |
2 | fnfvelrn 5592 | . . 3 | |
3 | 1, 2 | sylan 281 | . 2 |
4 | frn 5321 | . . . 4 | |
5 | 4 | sseld 3123 | . . 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 2125 crn 4580 wfn 5158 wf 5159 cfv 5163 |
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 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1481 ax-10 1482 ax-11 1483 ax-i12 1484 ax-bndl 1486 ax-4 1487 ax-17 1503 ax-i9 1507 ax-ial 1511 ax-i5r 1512 ax-14 2128 ax-ext 2136 ax-sep 4078 ax-pow 4130 ax-pr 4164 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1740 df-eu 2006 df-mo 2007 df-clab 2141 df-cleq 2147 df-clel 2150 df-nfc 2285 df-ral 2437 df-rex 2438 df-v 2711 df-sbc 2934 df-un 3102 df-in 3104 df-ss 3111 df-pw 3541 df-sn 3562 df-pr 3563 df-op 3565 df-uni 3769 df-br 3962 df-opab 4022 df-id 4248 df-xp 4585 df-rel 4586 df-cnv 4587 df-co 4588 df-dm 4589 df-rn 4590 df-iota 5128 df-fun 5165 df-fn 5166 df-f 5167 df-fv 5171 |
This theorem is referenced by: ffvelrni 5594 ffvelrnda 5595 dffo3 5607 ffnfv 5618 ffvresb 5623 fcompt 5630 fsn2 5634 fvconst 5648 foco2 5695 fcofo 5725 cocan1 5728 isocnv 5752 isores2 5754 isopolem 5763 isosolem 5765 fovrn 5953 off 6034 mapsncnv 6629 2dom 6739 enm 6754 xpdom2 6765 xpmapenlem 6783 fiintim 6862 isotilem 6938 updjudhf 7009 exmidomniim 7063 shftf 10707 summodclem2a 11255 isumcl 11299 mertenslem2 11410 nn0seqcvgd 11889 algrf 11893 eucalg 11907 phimullem 12068 upxp 12611 uptx 12613 txhmeo 12658 cncfmet 12918 dvaddxxbr 13004 dvcj 13012 dvfre 13013 bj-charfunr 13323 |
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