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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 7094, dff3 7095, and dff4 7096. (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 6532 | . 2 wff 𝐹:𝐴⟶𝐵 |
| 5 | 3, 1 | wfn 6531 | . . 3 wff 𝐹 Fn 𝐴 |
| 6 | 3 | crn 5661 | . . . 4 class ran 𝐹 |
| 7 | 6, 2 | wss 3904 | . . 3 wff ran 𝐹 ⊆ 𝐵 |
| 8 | 5, 7 | wa 400 | . 2 wff (𝐹 Fn 𝐴 ∧ ran 𝐹 ⊆ 𝐵) |
| 9 | 4, 8 | wb 209 | 1 wff (𝐹:𝐴⟶𝐵 ↔ (𝐹 Fn 𝐴 ∧ ran 𝐹 ⊆ 𝐵)) |
| Colors of variables: wff setvar class |
| This definition is used by: feq1 6683 feq2 6684 feq3 6685 nff 6701 sbcfg 6703 ffn 6705 dffn2 6707 frn 6713 dffn3 6718 ffrnb 6720 fss 6722 fcof 6729 funssxp 6734 fdmrn 6737 fun 6740 fnfco 6743 fssres 6744 fcoi2 6753 fint 6757 fin 6758 f0 6759 fconst 6764 f1ssr 6782 fof 6792 dff1o2 6826 dff2 7094 dff3 7095 fmpt 7105 ffnfv 7114 ffvresb 7121 idref 7142 fpr 7151 dff1o6 7273 fliftf 7313 fiun 7938 f1iun 7939 ffoss 7941 1stcof 8014 2ndcof 8015 smores 8337 smores2 8339 iordsmo 8342 sbthlem9 9081 inf3lem6 9600 alephsmo 10093 alephsing 10266 axdc3lem2 10441 smobeth 10577 fpwwe2lem10 10631 gruiun 10790 gruima 10793 nqerf 10921 om2uzf1oi 13996 fclim 15611 invf 17831 funcres2b 17960 funcres2c 17966 hofcllem 18320 hofcl 18321 nfchnd 18673 gsumval2 18750 resmgmhm2b 18777 resmhm2b 18887 frmdss2 18928 gsumval3a 19979 subgdmdprd 20112 srgfcl 20284 lsslindf 21991 indlcim 22001 cnrest2 23454 lmss 23466 conncn 23594 txflf 24174 cnextf 24234 clsnsg 24278 tgpconncomp 24281 psmetxrge0 24481 causs 25468 ellimc2 26047 perfdvf 26073 c1lip2 26168 dvne0 26181 plyeq0 26379 plyreres 26455 aannenlem1 26502 taylf 26535 ulmss 26571 elno2 27829 elno3 27830 cutsf 27996 madef 28040 oniso 28475 mpteleeOLD 29256 ausgrusgrb 29526 ausgrumgri 29528 usgrexmplef 29620 subuhgr 29647 subupgr 29648 subumgr 29649 subusgr 29650 upgrres 29667 umgrres 29668 hhssnv 31627 pjfi 32067 maprnin 33087 cycpmconjslem1 33483 esplyfv1 33968 measdivcstALTV 34624 sitgf 34746 eulerpartlemn 34780 reprinrn 35014 cvmlift2lem9a 35803 satff 35910 icoreresf 38026 poimirlem30 38329 poimirlem31 38330 isbnd3 38463 dihf11lem 42068 ofoafg 44109 ofoaid1 44113 ofoaid2 44114 naddcnff 44117 ntrf 44877 clsf2 44880 gneispace3 44887 gneispacef2 44890 k0004lem1 44901 dvsid 45069 stoweidlem27 46769 stoweidlem29 46771 stoweidlem31 46773 fourierdlem15 46864 mbfresmf 47481 sinnpoly 47656 ffnafv 47936 fcdmvafv2v 48001 iccpartf 48208 slotresfo 49705 |
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