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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 5267 | . . 3 | |
2 | fnfvelrn 5545 | . . 3 | |
3 | 1, 2 | sylan 281 | . 2 |
4 | frn 5276 | . . . 4 | |
5 | 4 | sseld 3091 | . . 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 4535 wfn 5113 wf 5114 cfv 5118 |
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 2119 ax-sep 4041 ax-pow 4093 ax-pr 4126 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-eu 2000 df-mo 2001 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ral 2419 df-rex 2420 df-v 2683 df-sbc 2905 df-un 3070 df-in 3072 df-ss 3079 df-pw 3507 df-sn 3528 df-pr 3529 df-op 3531 df-uni 3732 df-br 3925 df-opab 3985 df-id 4210 df-xp 4540 df-rel 4541 df-cnv 4542 df-co 4543 df-dm 4544 df-rn 4545 df-iota 5083 df-fun 5120 df-fn 5121 df-f 5122 df-fv 5126 |
This theorem is referenced by: ffvelrni 5547 ffvelrnda 5548 dffo3 5560 ffnfv 5571 ffvresb 5576 fcompt 5583 fsn2 5587 fvconst 5601 foco2 5648 fcofo 5678 cocan1 5681 isocnv 5705 isores2 5707 isopolem 5716 isosolem 5718 fovrn 5906 off 5987 mapsncnv 6582 2dom 6692 enm 6707 xpdom2 6718 xpmapenlem 6736 fiintim 6810 isotilem 6886 updjudhf 6957 exmidomniim 7006 shftf 10595 summodclem2a 11143 isumcl 11187 mertenslem2 11298 nn0seqcvgd 11711 algrf 11715 eucalg 11729 phimullem 11890 upxp 12430 uptx 12432 txhmeo 12477 cncfmet 12737 dvaddxxbr 12823 dvcj 12831 dvfre 12832 |
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