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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 5337 | . 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 3201 ran crn 4732 Fn wfn 5328 ⟶wf 5329 |
| 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 5337 |
| This theorem is referenced by: ffnd 5490 ffun 5492 frel 5494 fdm 5495 fresin 5523 fcoi1 5525 feu 5527 f0bi 5538 fnconstg 5543 f1fn 5553 fofn 5570 dffo2 5572 fimadmfo 5577 f1ofn 5593 fdmeu 5698 feqmptd 5708 fvco3 5726 ffvelcdm 5788 dff2 5799 dffo3 5802 dffo4 5803 dffo5 5804 f1ompt 5806 ffnfv 5813 fcompt 5825 fsn2 5829 fconst2g 5877 fconstfvm 5880 fdmexb 5886 fex 5893 dff13 5919 cocan1 5938 off 6257 suppssof1 6262 ofco 6263 caofref 6269 caofrss 6276 caoftrn 6277 fo1stresm 6333 fo2ndresm 6334 1stcof 6335 2ndcof 6336 fo2ndf 6401 fsuppeq 6425 fsuppeqg 6426 tposf2 6477 smoiso 6511 tfrcllemssrecs 6561 tfrcllemsucaccv 6563 elmapfn 6883 mapsn 6902 pw2f1odclem 7063 mapen 7075 updjudhcoinlf 7322 updjudhcoinrg 7323 updjud 7324 omp1eomlem 7336 dfz2 9596 uzn0 9816 unirnioo 10252 dfioo2 10253 ioorebasg 10254 fzen 10323 fseq1p1m1 10374 2ffzeq 10421 fvinim0ffz 10533 frecuzrdglem 10719 frecuzrdgtcl 10720 frecuzrdg0 10721 frecuzrdgfunlem 10727 frecuzrdg0t 10730 seq3val 10768 seqvalcd 10769 ser0f 10842 ffz0hash 11143 fnfzo0hash 11145 wrdred1hash 11206 shftf 11453 uzin2 11610 rexanuz 11611 prodf1f 12167 eff2 12304 reeff1 12324 tanvalap 12332 1arithlem4 13002 1arith 13003 isgrpinv 13700 kerf1ghm 13924 cnfldadd 14641 cnfldmul 14643 cnfldplusf 14653 cnfldsub 14654 znunit 14738 psrbaglecl 14754 lmbr2 15008 cncnpi 15022 cncnp 15024 cnpdis 15036 lmff 15043 tx1cn 15063 tx2cn 15064 upxp 15066 txcnmpt 15067 uptx 15068 xmettpos 15164 blrnps 15205 blrn 15206 xmeterval 15229 qtopbasss 15315 cnbl0 15328 cnblcld 15329 cnfldms 15330 tgioo 15348 tgqioo 15349 dvfre 15504 plyreres 15558 reeff1o 15567 pilem1 15573 ioocosf1o 15648 dfrelog 15654 mpodvdsmulf1o 15787 fsumdvdsmul 15788 012of 16696 2o01f 16697 taupi 16789 |
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