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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 5347 | . . 3 | |
2 | fnfvelrn 5628 | . . 3 | |
3 | 1, 2 | sylan 281 | . 2 |
4 | frn 5356 | . . . 4 | |
5 | 4 | sseld 3146 | . . 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 2141 crn 4612 wfn 5193 wf 5194 cfv 5198 |
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 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-pow 4160 ax-pr 4194 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ral 2453 df-rex 2454 df-v 2732 df-sbc 2956 df-un 3125 df-in 3127 df-ss 3134 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-br 3990 df-opab 4051 df-id 4278 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-fv 5206 |
This theorem is referenced by: ffvelrni 5630 ffvelrnda 5631 dffo3 5643 ffnfv 5654 ffvresb 5659 fcompt 5666 fsn2 5670 fvconst 5684 foco2 5733 fcofo 5763 cocan1 5766 isocnv 5790 isores2 5792 isopolem 5801 isosolem 5803 fovrn 5995 off 6073 mapsncnv 6673 2dom 6783 enm 6798 xpdom2 6809 xpmapenlem 6827 fiintim 6906 isotilem 6983 updjudhf 7056 exmidomniim 7117 shftf 10794 summodclem2a 11344 isumcl 11388 mertenslem2 11499 nn0seqcvgd 11995 algrf 11999 eucalg 12013 phimullem 12179 pcmpt 12295 pcprod 12298 mhmpropd 12689 upxp 13066 uptx 13068 txhmeo 13113 cncfmet 13373 dvaddxxbr 13459 dvcj 13467 dvfre 13468 lgsdir 13730 lgsdi 13732 bj-charfunr 13845 |
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