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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 5869 fconstfvm 5872 fex 5883 dff13 5909 cocan1 5928 off 6248 suppssof1 6253 ofco 6254 caofref 6260 caofrss 6267 caoftrn 6268 fo1stresm 6324 fo2ndresm 6325 1stcof 6326 2ndcof 6327 fo2ndf 6392 tposf2 6434 smoiso 6468 tfrcllemssrecs 6518 tfrcllemsucaccv 6520 elmapfn 6840 mapsn 6859 pw2f1odclem 7020 mapen 7032 updjudhcoinlf 7279 updjudhcoinrg 7280 updjud 7281 omp1eomlem 7293 dfz2 9552 uzn0 9772 unirnioo 10208 dfioo2 10209 ioorebasg 10210 fzen 10278 fseq1p1m1 10329 2ffzeq 10376 fvinim0ffz 10488 frecuzrdglem 10674 frecuzrdgtcl 10675 frecuzrdg0 10676 frecuzrdgfunlem 10682 frecuzrdg0t 10685 seq3val 10723 seqvalcd 10724 ser0f 10797 ffz0hash 11098 fnfzo0hash 11100 wrdred1hash 11161 shftf 11395 uzin2 11552 rexanuz 11553 prodf1f 12109 eff2 12246 reeff1 12266 tanvalap 12274 1arithlem4 12944 1arith 12945 isgrpinv 13642 kerf1ghm 13866 cnfldadd 14582 cnfldmul 14584 cnfldplusf 14594 cnfldsub 14595 znunit 14679 lmbr2 14944 cncnpi 14958 cncnp 14960 cnpdis 14972 lmff 14979 tx1cn 14999 tx2cn 15000 upxp 15002 txcnmpt 15003 uptx 15004 xmettpos 15100 blrnps 15141 blrn 15142 xmeterval 15165 qtopbasss 15251 cnbl0 15264 cnblcld 15265 cnfldms 15266 tgioo 15284 tgqioo 15285 dvfre 15440 plyreres 15494 reeff1o 15503 pilem1 15509 ioocosf1o 15584 dfrelog 15590 mpodvdsmulf1o 15720 fsumdvdsmul 15721 012of 16618 2o01f 16619 taupi 16704 |
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