| Metamath Proof Explorer |
< Previous
Next >
Related theorems Unicode version |
| Description: The domain of a mapping. |
| Ref | Expression |
|---|---|
| fdm |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ffn 3625 |
. 2
| |
| 2 | fndm 3585 |
. 2
| |
| 3 | 1, 2 | syl 10 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: fdmi 3630 fco 3634 fssxp 3635 ffdm 3637 dmfex 3653 f00 3655 foima 3674 fornex 3677 foco 3680 f1ores 3701 f1imacnv 3703 f1ococnv2 3706 fimacnv 3808 dff2 3815 fopab2 3821 cbvfo 3883 mapprc 4324 map0b 4341 mapsn 4343 brdomg 4372 fodomr 4477 mapdom2lem 4487 fodomfi 4554 fodomfib 4555 inf3lem7 4607 fodom 4786 fodomb 4788 fseqsupcl 6485 fseqsupub 6486 infmap2 7538 iscnp2 7718 cnpco 7726 iscncl 7727 cnsscnp 7729 cncnplem4 7734 cnconst 7737 ismet 7755 dfms2 7756 metssba 7766 metne0 7778 metreslem 7779 metres 7780 metcnplem 7843 metcnp 7844 metcnp3 7853 metcnss 7855 metcnss2 7856 grprndm 8011 resgrprn 8052 subgres 8074 vcoprne 8155 nvdm 8246 imsdval 8274 imsba 8278 ipfval 8309 sspn 8352 dmadjrnb 9785 ghomfo 10346 mapdiscn 10453 dcsda 10578 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 |
| This theorem depends on definitions: df-bi 147 df-an 225 df-fn 3191 df-f 3192 |