| 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 7040, dff3 7041, and dff4 7042. (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 6483 | . 2 wff 𝐹:𝐴⟶𝐵 |
| 5 | 3, 1 | wfn 6482 | . . 3 wff 𝐹 Fn 𝐴 |
| 6 | 3 | crn 5621 | . . . 4 class ran 𝐹 |
| 7 | 6, 2 | wss 3885 | . . 3 wff ran 𝐹 ⊆ 𝐵 |
| 8 | 5, 7 | wa 395 | . 2 wff (𝐹 Fn 𝐴 ∧ ran 𝐹 ⊆ 𝐵) |
| 9 | 4, 8 | wb 206 | 1 wff (𝐹:𝐴⟶𝐵 ↔ (𝐹 Fn 𝐴 ∧ ran 𝐹 ⊆ 𝐵)) |
| Colors of variables: wff setvar class |
| This definition is referenced by: feq1 6635 feq2 6636 feq3 6637 nff 6653 sbcfg 6655 ffn 6657 dffn2 6659 frn 6664 dffn3 6669 ffrnb 6671 fss 6673 fcof 6680 funssxp 6685 fdmrn 6688 fun 6691 fnfco 6694 fssres 6695 fcoi2 6704 fint 6708 fin 6709 f0 6710 fconst 6715 f1ssr 6731 fof 6741 dff1o2 6774 dff2 7040 dff3 7041 fmpt 7051 ffnfv 7060 ffvresb 7067 idref 7088 fpr 7097 dff1o6 7219 fliftf 7259 fiun 7885 f1iun 7886 ffoss 7888 1stcof 7961 2ndcof 7962 smores 8281 smores2 8283 iordsmo 8286 sbthlem9 9022 inf3lem6 9543 alephsmo 10013 alephsing 10187 axdc3lem2 10362 smobeth 10498 fpwwe2lem10 10552 gruiun 10711 gruima 10714 nqerf 10842 om2uzf1oi 13904 fclim 15504 invf 17724 funcres2b 17853 funcres2c 17859 hofcllem 18213 hofcl 18214 nfchnd 18566 gsumval2 18643 resmgmhm2b 18670 resmhm2b 18779 frmdss2 18820 gsumval3a 19867 subgdmdprd 20000 srgfcl 20166 lsslindf 21799 indlcim 21809 cnrest2 23239 lmss 23251 conncn 23379 txflf 23959 cnextf 24019 clsnsg 24063 tgpconncomp 24066 psmetxrge0 24266 causs 25253 ellimc2 25832 perfdvf 25858 c1lip2 25953 dvne0 25966 plyeq0 26164 plyreres 26237 aannenlem1 26282 taylf 26314 ulmss 26350 elno2 27606 elno3 27607 cutsf 27772 madef 27816 oniso 28251 mpteleeOLD 28952 ausgrusgrb 29222 ausgrumgri 29224 usgrexmplef 29316 subuhgr 29343 subupgr 29344 subumgr 29345 subusgr 29346 upgrres 29363 umgrres 29364 hhssnv 31323 pjfi 31763 maprnin 32792 cycpmconjslem1 33203 esplyfv1 33701 measdivcstALTV 34357 sitgf 34479 eulerpartlemn 34513 reprinrn 34750 cvmlift2lem9a 35473 satff 35580 icoreresf 37656 poimirlem30 37959 poimirlem31 37960 isbnd3 38093 dihf11lem 41700 ofoafg 43770 ofoaid1 43774 ofoaid2 43775 naddcnff 43778 ntrf 44538 clsf2 44541 gneispace3 44548 gneispacef2 44551 k0004lem1 44562 dvsid 44746 stoweidlem27 46443 stoweidlem29 46445 stoweidlem31 46447 fourierdlem15 46538 mbfresmf 47155 sinnpoly 47327 ffnafv 47607 fcdmvafv2v 47672 iccpartf 47879 slotresfo 49362 |
| Copyright terms: Public domain | W3C validator |