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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 5361 | . 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 3214 ran crn 4755 Fn wfn 5352 ⟶wf 5353 |
| 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 5361 |
| This theorem is referenced by: ffnd 5514 ffun 5516 frel 5518 fdm 5519 ffrn 5525 fresin 5548 fresaunres2disj 5550 fcoi1 5552 feu 5554 f0bi 5565 fnconstg 5570 f1fn 5580 fofn 5597 dffo2 5599 fimadmfo 5604 f1ofn 5620 fdmeu 5725 feqmptd 5735 fvco3 5753 ffvelcdm 5815 dff2 5826 dffo3 5829 dffo4 5830 dffo5 5831 f1ompt 5833 ffnfv 5840 fcompt 5852 fsn2 5856 fconst2g 5904 fconstfvm 5907 fdmexb 5913 fex 5920 dff13 5947 cocan1 5966 off 6288 suppssof1 6293 ofco 6294 caofref 6300 caofrss 6307 caoftrn 6308 fo1stresm 6368 fo2ndresm 6369 1stcof 6370 2ndcof 6371 fo2ndf 6436 fsuppeq 6460 fsuppeqg 6461 tposf2 6512 smoiso 6546 tfrcllemssrecs 6596 tfrcllemsucaccv 6598 elmapfn 6918 mapsnd 6936 mapsn 6938 pw2f1odclem 7100 mapen 7112 mapunen 7117 updjudhcoinlf 7384 updjudhcoinrg 7385 updjud 7386 omp1eomlem 7398 dfz2 9667 uzn0 9888 unirnioo 10325 dfioo2 10326 ioorebasg 10327 fzen 10397 fseq1p1m1 10450 2ffzeq 10497 fvinim0ffz 10609 frecuzrdglem 10797 frecuzrdgtcl 10798 frecuzrdg0 10799 frecuzrdgfunlem 10805 frecuzrdg0t 10808 seq3val 10846 seqvalcd 10847 ser0f 10920 ffz0hash 11225 fnfzo0hash 11227 wrdred1hash 11293 shftf 11540 uzin2 11697 rexanuz 11698 prodf1f 12254 eff2 12391 reeff1 12411 tanvalap 12419 1arithlem4 13089 1arith 13090 isgrpinv 13809 kerf1ghm 14027 cnfldadd 14836 cnfldmul 14838 cnfldplusf 14848 cnfldsub 14849 znunit 14933 psrbaglecl 14950 lmbr2 15205 cncnpi 15219 cncnp 15221 cnpdis 15233 lmff 15240 tx1cn 15260 tx2cn 15261 upxp 15263 txcnmpt 15264 uptx 15265 xmettpos 15361 blrnps 15402 blrn 15403 xmeterval 15426 qtopbasss 15512 cnbl0 15525 cnblcld 15526 cnfldms 15527 tgioo 15545 tgqioo 15546 dvfre 15701 plyreres 15755 reeff1o 15764 pilem1 15770 ioocosf1o 15845 dfrelog 15851 mpodvdsmulf1o 15984 fsumdvdsmul 15985 012of 16893 2o01f 16894 taupi 16985 |
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