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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 5533 |
. . 3
| |
| 2 | fnfvelrn 5840 |
. . 3
| |
| 3 | 1, 2 | sylan 283 |
. 2
|
| 4 | frn 5542 |
. . . 4
| |
| 5 | 4 | sseld 3247 |
. . 3
|
| 6 | 5 | adantr 276 |
. 2
|
| 7 | 3, 6 | mpd 13 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-sbc 3052 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-opab 4193 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-iota 5337 df-fun 5379 df-fn 5380 df-f 5381 df-fv 5385 |
| This theorem is used by: ffvelcdmi 5842 ffvelcdmda 5843 dffo3 5855 ffnfv 5866 ffvresb 5871 fcompt 5878 fsn2 5882 fvconst 5903 foco2 5959 fcofo 5990 cocan1 5993 isocnv 6017 isores2 6019 isopolem 6028 isosolem 6030 fovcdm 6232 off 6315 mapsncnv 6977 2dom 7093 dom1o 7116 enm 7118 xpdom2 7129 xpmapenlem 7149 fiintim 7238 isotilem 7346 updjudhf 7419 exmidomniim 7481 finacn 7560 seqf1og 10958 hashf1lem1 11285 shftf 11595 summodclem2a 12148 isumcl 12192 mertenslem2 12303 3dvds 12631 nn0seqcvgd 12819 algrf 12823 eucalg 12837 phimullem 13003 pcmpt 13122 pcprod 13125 imasaddfnlemg 13635 imasaddflemg 13637 mhmpropd 13773 ghmsub 14054 znunit 14994 upxp 15373 uptx 15375 txhmeo 15420 cncfmet 15693 dvaddxxbr 15802 dvcj 15810 dvfre 15811 plyf 15838 plyaddlem 15850 plymullem 15851 plycolemc 15859 plyreres 15865 dvply1 15866 lgsdir 16154 lgsdi 16156 lgseisenlem3 16191 wlkpvtx 16615 wlkepvtx 16616 bj-charfunr 16836 |
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