| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 7084, dff3 7085, and dff4 7086. (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 6521 | . 2 wff 𝐹:𝐴⟶𝐵 |
| 5 | 3, 1 | wfn 6520 | . . 3 wff 𝐹 Fn 𝐴 |
| 6 | 3 | crn 5653 | . . . 4 class ran 𝐹 |
| 7 | 6, 2 | wss 3907 | . . 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 referenced by: feq1 6673 feq2 6674 feq3 6675 nff 6691 sbcfg 6693 ffn 6695 dffn2 6697 frn 6703 dffn3 6708 ffrnb 6710 fss 6712 fcof 6719 funssxp 6724 fdmrn 6727 fun 6730 fnfco 6733 fssres 6734 fcoi2 6743 fint 6747 fin 6748 f0 6749 fconst 6754 f1ssr 6772 fof 6782 dff1o2 6816 dff2 7084 dff3 7085 fmpt 7095 ffnfv 7104 ffvresb 7111 idref 7132 fpr 7141 dff1o6 7263 fliftf 7303 fiun 7928 f1iun 7929 ffoss 7931 1stcof 8004 2ndcof 8005 smores 8327 smores2 8329 iordsmo 8332 sbthlem9 9071 inf3lem6 9590 alephsmo 10074 alephsing 10248 axdc3lem2 10423 smobeth 10559 fpwwe2lem10 10613 gruiun 10772 gruima 10775 nqerf 10903 om2uzf1oi 13980 fclim 15594 invf 17815 funcres2b 17944 funcres2c 17950 hofcllem 18304 hofcl 18305 nfchnd 18657 gsumval2 18734 resmgmhm2b 18761 resmhm2b 18871 frmdss2 18912 gsumval3a 19964 subgdmdprd 20097 srgfcl 20269 lsslindf 21940 indlcim 21950 cnrest2 23404 lmss 23416 conncn 23544 txflf 24124 cnextf 24184 clsnsg 24228 tgpconncomp 24231 psmetxrge0 24431 causs 25418 ellimc2 25997 perfdvf 26023 c1lip2 26118 dvne0 26131 plyeq0 26329 plyreres 26405 aannenlem1 26450 taylf 26482 ulmss 26518 elno2 27776 elno3 27777 cutsf 27943 madef 27987 oniso 28422 mpteleeOLD 29154 ausgrusgrb 29424 ausgrumgri 29426 usgrexmplef 29518 subuhgr 29545 subupgr 29546 subumgr 29547 subusgr 29548 upgrres 29565 umgrres 29566 hhssnv 31525 pjfi 31965 maprnin 32988 cycpmconjslem1 33387 esplyfv1 33876 measdivcstALTV 34532 sitgf 34654 eulerpartlemn 34688 reprinrn 34922 cvmlift2lem9a 35666 satff 35773 icoreresf 37858 poimirlem30 38161 poimirlem31 38162 isbnd3 38295 dihf11lem 41902 ofoafg 43943 ofoaid1 43947 ofoaid2 43948 naddcnff 43951 ntrf 44711 clsf2 44714 gneispace3 44721 gneispacef2 44724 k0004lem1 44735 dvsid 44905 stoweidlem27 46599 stoweidlem29 46601 stoweidlem31 46603 fourierdlem15 46694 mbfresmf 47311 sinnpoly 47483 ffnafv 47763 fcdmvafv2v 47828 iccpartf 48035 slotresfo 49528 |
| Copyright terms: Public domain | W3C validator |