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| Description: The domain of a mapping. |
| Ref | Expression |
|---|---|
| fdm |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ffn 3613 |
. 2
| |
| 2 | fndm 3573 |
. 2
| |
| 3 | 1, 2 | syl 10 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: fco 3621 fssxp 3622 ffdm 3624 dmfex 3640 f00 3642 foima 3661 fornex 3664 foco 3667 f1ores 3688 f1imacnv 3690 f1ococnv2 3693 fimacnv 3795 dff2 3802 fopab2 3808 cbvfo 3870 mapprc 4310 map0b 4327 mapsn 4329 brdomg 4358 fodomr 4463 mapdom2lem 4473 fodomfi 4540 fodomfib 4541 inf3lem7 4591 fodom 4770 fodomb 4772 fseqsupcl 6457 fseqsupub 6458 climsup 7091 cvgcmpub 7121 unbenlem 7447 infmap2 7523 cnpco 7708 iscncl 7709 cnsscnp 7711 cncnplem4 7716 cnconst 7719 ismet 7737 dfms2 7738 ismeti 7741 metssba 7748 metreslem 7762 metres 7763 metcnplem 7825 metcnp 7826 metcnp3 7835 metcnss 7837 metcnss2 7838 cnmetdval 7841 cnmetba 7842 cncfmet 7844 cncfmet1 7845 remetba 7848 bcthlem29 7961 grprndm 7988 grprnOLD 7991 resgrprn 8030 subgres 8054 readdsubg 8066 zaddsubg 8067 ghsubgi 8075 vcoprne 8136 cnvc 8140 vsfval 8194 cnnv 8245 imsdval 8255 imsba 8259 abscncfALT 8278 ipfval 8286 sspn 8329 efghgrpilem 8634 shftefif1olem 8661 dfhnorm2 8909 hilvc 8950 hhssabl 9053 hhssnv 9054 hhshsslem1 9057 hoco 9607 dmadjrnb 9747 ghomfo 10296 clsrebb 10380 mapdiscn 10398 dcsda 10510 |
| 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 3183 df-f 3184 |