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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 5513 |
. . 3
| |
| 2 | fnfvelrn 5814 |
. . 3
| |
| 3 | 1, 2 | sylan 283 |
. 2
|
| 4 | frn 5522 |
. . . 4
| |
| 5 | 4 | sseld 3241 |
. . 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 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-v 2817 df-sbc 3046 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-br 4115 df-opab 4177 df-id 4419 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-iota 5317 df-fun 5359 df-fn 5360 df-f 5361 df-fv 5365 |
| This theorem is referenced by: ffvelcdmi 5816 ffvelcdmda 5817 dffo3 5829 ffnfv 5840 ffvresb 5845 fcompt 5852 fsn2 5856 fvconst 5877 foco2 5932 fcofo 5963 cocan1 5966 isocnv 5990 isores2 5992 isopolem 6001 isosolem 6003 fovcdm 6205 off 6288 mapsncnv 6943 2dom 7059 dom1o 7082 enm 7084 xpdom2 7095 xpmapenlem 7115 fiintim 7204 isotilem 7310 updjudhf 7383 exmidomniim 7445 finacn 7524 seqf1og 10907 shftf 11540 summodclem2a 12092 isumcl 12136 mertenslem2 12247 3dvds 12575 nn0seqcvgd 12763 algrf 12767 eucalg 12781 phimullem 12947 pcmpt 13066 pcprod 13069 imasaddfnlemg 13578 imasaddflemg 13580 mhmpropd 13721 ghmsub 14004 znunit 14933 upxp 15263 uptx 15265 txhmeo 15310 cncfmet 15583 dvaddxxbr 15692 dvcj 15700 dvfre 15701 plyf 15728 plyaddlem 15740 plymullem 15741 plycolemc 15749 plyreres 15755 dvply1 15756 lgsdir 16034 lgsdi 16036 lgseisenlem3 16071 wlkpvtx 16495 wlkepvtx 16496 bj-charfunr 16706 |
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