| 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 7099, dff3 7100, and dff4 7101. (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 6534 | . 2 wff 𝐹:𝐴⟶𝐵 |
| 5 | 3, 1 | wfn 6533 | . . 3 wff 𝐹 Fn 𝐴 |
| 6 | 3 | crn 5651 | . . . 4 class ran 𝐹 |
| 7 | 6, 2 | wss 3895 | . . 3 wff ran 𝐹 ⊆ 𝐵 |
| 8 | 5, 7 | wa 401 | . 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 6687 feq2 6688 feq3 6689 nff 6705 sbcfg 6707 ffn 6709 dffn2 6711 frn 6717 dffn3 6722 ffrnb 6724 fss 6726 fcof 6733 funssxp 6738 fdmrn 6741 fun 6744 fnfco 6747 fssres 6748 fcoi2 6757 fint 6761 fin 6762 f0 6763 fconst 6768 f1ssr 6786 fof 6796 dff1o2 6830 dff2 7099 dff3 7100 fmpt 7110 ffnfv 7119 ffvresb 7126 idref 7149 fpr 7158 dff1o6 7283 fliftf 7323 fiun 7955 f1iun 7956 ffoss 7958 1stcof 8031 2ndcof 8032 smores 8360 smores2 8362 iordsmo 8365 sbthlem9 9114 inf3lem6 9634 alephsmo 10181 alephsing 10354 axdc3lem2 10529 smobeth 10671 fpwwe2lem10 10725 gruiun 10884 gruima 10887 nqerf 11015 om2uzf1oi 14096 fclim 15720 invf 17943 funcres2b 18072 funcres2c 18078 hofcllem 18432 hofcl 18433 nfchnd 18785 mgmn0plusgf 18827 gsumval2 18875 resmgmhm2b 18902 resmhm2b 19018 frmdss2 19059 gsumval3a 20117 subgdmdprd 20250 srgfcl 20422 lsslindf 22136 indlcim 22146 cnrest2 23604 lmss 23616 conncn 23744 txflf 24325 cnextf 24385 clsnsg 24429 tgpconncomp 24432 psmetxrge0 24632 causs 25619 ellimc2 26197 perfdvf 26223 c1lip2 26318 dvne0 26331 plyeq0 26530 plyreres 26604 aannenlem1 26655 taylf 26688 ulmss 26724 elno2 28011 elno3 28012 cutsf 28178 madef 28222 oniso 28657 mpteleeOLD 29473 ausgrusgrb 29746 ausgrumgri 29748 usgrexmplef 29840 subuhgr 29867 subupgr 29868 subumgr 29869 subusgr 29870 upgrres 29887 umgrres 29888 hhssnv 31866 pjfi 32306 maprnin 33365 cycpmconjslem1 33757 esplyfv1 34243 measdivcstALTV 34900 sitgf 35021 eulerpartlemn 35055 reprinrn 35289 cvmlift2lem9a 36110 satff 36217 icoreresf 38318 poimirlem30 38611 poimirlem31 38612 isbnd3 38761 dihf11lem 42366 ofoafg 44398 ofoaid1 44402 ofoaid2 44403 naddcnff 44406 ntrf 45165 clsf2 45168 gneispace3 45175 gneispacef2 45178 k0004lem1 45189 dvsid 45357 stoweidlem27 47079 stoweidlem29 47081 stoweidlem31 47083 fourierdlem15 47174 mbfresmf 47791 ffnafv 48283 fcdmvafv2v 48348 iccpartf 48555 slotresfo 50049 |
| Copyright terms: Public domain | W3C validator |