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| Mirrors > Home > ILE Home > Th. List > ffvelcdm | Unicode version | ||
| Description: A function's value belongs to its codomain. (Contributed by NM, 12-Aug-1999.) |
| Ref | Expression |
|---|---|
| ffvelcdm |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ffn 5508 |
. . 3
| |
| 2 | fnfvelrn 5809 |
. . 3
| |
| 3 | 1, 2 | sylan 283 |
. 2
|
| 4 | frn 5517 |
. . . 4
| |
| 5 | 4 | sseld 3237 |
. . 3
|
| 6 | 5 | adantr 276 |
. 2
|
| 7 | 3, 6 | mpd 13 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2206 ax-ext 2214 ax-sep 4228 ax-pow 4287 ax-pr 4322 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ral 2525 df-rex 2526 df-v 2815 df-sbc 3043 df-un 3215 df-in 3217 df-ss 3224 df-pw 3671 df-sn 3695 df-pr 3696 df-op 3698 df-uni 3915 df-br 4110 df-opab 4172 df-id 4414 df-xp 4755 df-rel 4756 df-cnv 4757 df-co 4758 df-dm 4759 df-rn 4760 df-iota 5312 df-fun 5354 df-fn 5355 df-f 5356 df-fv 5360 |
| This theorem is referenced by: ffvelcdmi 5811 ffvelcdmda 5812 dffo3 5824 ffnfv 5835 ffvresb 5840 fcompt 5847 fsn2 5851 fvconst 5872 foco2 5926 fcofo 5957 cocan1 5960 isocnv 5984 isores2 5986 isopolem 5995 isosolem 5997 fovcdm 6197 off 6279 mapsncnv 6930 2dom 7046 dom1o 7069 enm 7071 xpdom2 7082 xpmapenlem 7102 fiintim 7191 isotilem 7297 updjudhf 7370 exmidomniim 7432 finacn 7511 seqf1og 10883 shftf 11515 summodclem2a 12067 isumcl 12111 mertenslem2 12222 3dvds 12550 nn0seqcvgd 12738 algrf 12742 eucalg 12756 phimullem 12922 pcmpt 13041 pcprod 13044 imasaddfnlemg 13527 imasaddflemg 13529 mhmpropd 13679 ghmsub 13968 znunit 14807 upxp 15137 uptx 15139 txhmeo 15184 cncfmet 15457 dvaddxxbr 15566 dvcj 15574 dvfre 15575 plyf 15602 plyaddlem 15614 plymullem 15615 plycolemc 15623 plyreres 15629 dvply1 15630 lgsdir 15908 lgsdi 15910 lgseisenlem3 15945 wlkpvtx 16369 wlkepvtx 16370 bj-charfunr 16580 |
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