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Mirrors > Home > MPE Home > Th. List > df-f | Structured version Visualization version GIF version |
Description: Define a function (mapping) with domain and codomain. Definition 6.15(3) of [TakeutiZaring] p. 27. 𝐹:𝐴⟶𝐵 can be read as "𝐹 is a function from 𝐴 to 𝐵". For alternate definitions, see dff2 6865, dff3 6866, and dff4 6867. (Contributed by NM, 1-Aug-1994.) |
Ref | Expression |
---|---|
df-f | ⊢ (𝐹:𝐴⟶𝐵 ↔ (𝐹 Fn 𝐴 ∧ ran 𝐹 ⊆ 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cA | . . 3 class 𝐴 | |
2 | cB | . . 3 class 𝐵 | |
3 | cF | . . 3 class 𝐹 | |
4 | 1, 2, 3 | wf 6351 | . 2 wff 𝐹:𝐴⟶𝐵 |
5 | 3, 1 | wfn 6350 | . . 3 wff 𝐹 Fn 𝐴 |
6 | 3 | crn 5556 | . . . 4 class ran 𝐹 |
7 | 6, 2 | wss 3936 | . . 3 wff ran 𝐹 ⊆ 𝐵 |
8 | 5, 7 | wa 398 | . 2 wff (𝐹 Fn 𝐴 ∧ ran 𝐹 ⊆ 𝐵) |
9 | 4, 8 | wb 208 | 1 wff (𝐹:𝐴⟶𝐵 ↔ (𝐹 Fn 𝐴 ∧ ran 𝐹 ⊆ 𝐵)) |
Colors of variables: wff setvar class |
This definition is referenced by: feq1 6495 feq2 6496 feq3 6497 nff 6510 sbcfg 6512 ffn 6514 dffn2 6516 frn 6520 dffn3 6525 fss 6527 fco 6531 funssxp 6535 fdmrn 6538 fun 6540 fnfco 6543 fssres 6544 fcoi2 6553 fint 6558 fin 6559 f0 6560 fconst 6565 f1ssr 6581 fof 6590 dff1o2 6620 dff2 6865 dff3 6866 fmpt 6874 ffnfv 6882 ffvresb 6888 idref 6908 fpr 6916 dff1o6 7032 fliftf 7068 fiun 7644 f1iun 7645 ffoss 7647 1stcof 7719 2ndcof 7720 smores 7989 smores2 7991 iordsmo 7994 sbthlem9 8635 inf3lem6 9096 alephsmo 9528 alephsing 9698 axdc3lem2 9873 smobeth 10008 fpwwe2lem11 10062 gruiun 10221 gruima 10224 nqerf 10352 om2uzf1oi 13322 fclim 14910 invf 17038 funcres2b 17167 funcres2c 17171 hofcllem 17508 hofcl 17509 gsumval2 17896 resmhm2b 17987 frmdss2 18028 gsumval3a 19023 subgdmdprd 19156 srgfcl 19265 lsslindf 20974 indlcim 20984 cnrest2 21894 lmss 21906 conncn 22034 txflf 22614 cnextf 22674 clsnsg 22718 tgpconncomp 22721 psmetxrge0 22923 causs 23901 ellimc2 24475 perfdvf 24501 c1lip2 24595 dvne0 24608 plyeq0 24801 plyreres 24872 aannenlem1 24917 taylf 24949 ulmss 24985 mptelee 26681 ausgrusgrb 26950 ausgrumgri 26952 usgrexmplef 27041 subuhgr 27068 subupgr 27069 subumgr 27070 subusgr 27071 upgrres 27088 umgrres 27089 hhssnv 29041 pjfi 29481 maprnin 30467 cycpmconjslem1 30796 measdivcstALTV 31484 sitgf 31605 eulerpartlemn 31639 reprinrn 31889 cvmlift2lem9a 32550 satff 32657 elno2 33161 elno3 33162 scutf 33273 icoreresf 34636 poimirlem30 34937 poimirlem31 34938 isbnd3 35077 dihf11lem 38417 ntrf 40522 clsf2 40525 gneispace3 40532 gneispacef2 40535 k0004lem1 40546 dvsid 40712 stoweidlem27 42361 stoweidlem29 42363 stoweidlem31 42365 fourierdlem15 42456 mbfresmf 43065 ffnafv 43419 frnvafv2v 43484 iccpartf 43640 resmgmhm2b 44116 |
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