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| Mirrors > Home > ILE Home > Th. List > ffn | GIF version | ||
| Description: A mapping is a function. (Contributed by NM, 2-Aug-1994.) |
| Ref | Expression |
|---|---|
| ffn | ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 Fn 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-f 5330 | . 2 ⊢ (𝐹:𝐴⟶𝐵 ↔ (𝐹 Fn 𝐴 ∧ ran 𝐹 ⊆ 𝐵)) | |
| 2 | 1 | simplbi 274 | 1 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 Fn 𝐴) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ⊆ wss 3200 ran crn 4726 Fn wfn 5321 ⟶wf 5322 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 |
| This theorem depends on definitions: df-bi 117 df-f 5330 |
| This theorem is referenced by: ffnd 5483 ffun 5485 frel 5487 fdm 5488 fresin 5515 fcoi1 5517 feu 5519 f0bi 5529 fnconstg 5534 f1fn 5544 fofn 5561 dffo2 5563 fimadmfo 5568 f1ofn 5584 fdmeu 5689 feqmptd 5699 fvco3 5717 ffvelcdm 5780 dff2 5791 dffo3 5794 dffo4 5795 dffo5 5796 f1ompt 5798 ffnfv 5805 fcompt 5817 fsn2 5821 fconst2g 5868 fconstfvm 5871 fex 5882 dff13 5908 cocan1 5927 off 6247 suppssof1 6252 ofco 6253 caofref 6259 caofrss 6266 caoftrn 6267 fo1stresm 6323 fo2ndresm 6324 1stcof 6325 2ndcof 6326 fo2ndf 6391 tposf2 6433 smoiso 6467 tfrcllemssrecs 6517 tfrcllemsucaccv 6519 elmapfn 6839 mapsn 6858 pw2f1odclem 7019 mapen 7031 updjudhcoinlf 7278 updjudhcoinrg 7279 updjud 7280 omp1eomlem 7292 dfz2 9551 uzn0 9771 unirnioo 10207 dfioo2 10208 ioorebasg 10209 fzen 10277 fseq1p1m1 10328 2ffzeq 10375 fvinim0ffz 10486 frecuzrdglem 10672 frecuzrdgtcl 10673 frecuzrdg0 10674 frecuzrdgfunlem 10680 frecuzrdg0t 10683 seq3val 10721 seqvalcd 10722 ser0f 10795 ffz0hash 11096 fnfzo0hash 11098 wrdred1hash 11156 shftf 11390 uzin2 11547 rexanuz 11548 prodf1f 12103 eff2 12240 reeff1 12260 tanvalap 12268 1arithlem4 12938 1arith 12939 isgrpinv 13636 kerf1ghm 13860 cnfldadd 14575 cnfldmul 14577 cnfldplusf 14587 cnfldsub 14588 znunit 14672 lmbr2 14937 cncnpi 14951 cncnp 14953 cnpdis 14965 lmff 14972 tx1cn 14992 tx2cn 14993 upxp 14995 txcnmpt 14996 uptx 14997 xmettpos 15093 blrnps 15134 blrn 15135 xmeterval 15158 qtopbasss 15244 cnbl0 15257 cnblcld 15258 cnfldms 15259 tgioo 15277 tgqioo 15278 dvfre 15433 plyreres 15487 reeff1o 15496 pilem1 15502 ioocosf1o 15577 dfrelog 15583 mpodvdsmulf1o 15713 fsumdvdsmul 15714 012of 16592 2o01f 16593 taupi 16677 |
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