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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 5322 | . 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 3197 ran crn 4720 Fn wfn 5313 ⟶wf 5314 |
| 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 5322 |
| This theorem is referenced by: ffnd 5474 ffun 5476 frel 5478 fdm 5479 fresin 5506 fcoi1 5508 feu 5510 f0bi 5520 fnconstg 5525 f1fn 5535 fofn 5552 dffo2 5554 fimadmfo 5559 f1ofn 5575 fdmeu 5679 feqmptd 5689 fvco3 5707 ffvelcdm 5770 dff2 5781 dffo3 5784 dffo4 5785 dffo5 5786 f1ompt 5788 ffnfv 5795 fcompt 5807 fsn2 5811 fconst2g 5858 fconstfvm 5861 fex 5872 dff13 5898 cocan1 5917 off 6237 suppssof1 6242 ofco 6243 caofref 6249 caofrss 6256 caoftrn 6257 fo1stresm 6313 fo2ndresm 6314 1stcof 6315 2ndcof 6316 fo2ndf 6379 tposf2 6420 smoiso 6454 tfrcllemssrecs 6504 tfrcllemsucaccv 6506 elmapfn 6826 mapsn 6845 pw2f1odclem 7003 mapen 7015 updjudhcoinlf 7258 updjudhcoinrg 7259 updjud 7260 omp1eomlem 7272 dfz2 9530 uzn0 9750 unirnioo 10181 dfioo2 10182 ioorebasg 10183 fzen 10251 fseq1p1m1 10302 2ffzeq 10349 fvinim0ffz 10459 frecuzrdglem 10645 frecuzrdgtcl 10646 frecuzrdg0 10647 frecuzrdgfunlem 10653 frecuzrdg0t 10656 seq3val 10694 seqvalcd 10695 ser0f 10768 ffz0hash 11068 fnfzo0hash 11070 wrdred1hash 11128 shftf 11356 uzin2 11513 rexanuz 11514 prodf1f 12069 eff2 12206 reeff1 12226 tanvalap 12234 1arithlem4 12904 1arith 12905 isgrpinv 13602 kerf1ghm 13826 cnfldadd 14541 cnfldmul 14543 cnfldplusf 14553 cnfldsub 14554 znunit 14638 lmbr2 14903 cncnpi 14917 cncnp 14919 cnpdis 14931 lmff 14938 tx1cn 14958 tx2cn 14959 upxp 14961 txcnmpt 14962 uptx 14963 xmettpos 15059 blrnps 15100 blrn 15101 xmeterval 15124 qtopbasss 15210 cnbl0 15223 cnblcld 15224 cnfldms 15225 tgioo 15243 tgqioo 15244 dvfre 15399 plyreres 15453 reeff1o 15462 pilem1 15468 ioocosf1o 15543 dfrelog 15549 mpodvdsmulf1o 15679 fsumdvdsmul 15680 012of 16416 2o01f 16417 taupi 16501 |
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