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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 5358 | . 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 3213 ran crn 4752 Fn wfn 5349 ⟶wf 5350 |
| 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 5358 |
| This theorem is referenced by: ffnd 5511 ffun 5513 frel 5515 fdm 5516 ffrn 5522 fresin 5545 fresaunres2disj 5547 fcoi1 5549 feu 5551 f0bi 5562 fnconstg 5567 f1fn 5577 fofn 5594 dffo2 5596 fimadmfo 5601 f1ofn 5617 fdmeu 5722 feqmptd 5732 fvco3 5750 ffvelcdm 5812 dff2 5823 dffo3 5826 dffo4 5827 dffo5 5828 f1ompt 5830 ffnfv 5837 fcompt 5849 fsn2 5853 fconst2g 5901 fconstfvm 5904 fdmexb 5910 fex 5917 dff13 5943 cocan1 5962 off 6281 suppssof1 6286 ofco 6287 caofref 6293 caofrss 6300 caoftrn 6301 fo1stresm 6357 fo2ndresm 6358 1stcof 6359 2ndcof 6360 fo2ndf 6425 fsuppeq 6449 fsuppeqg 6450 tposf2 6501 smoiso 6535 tfrcllemssrecs 6585 tfrcllemsucaccv 6587 elmapfn 6907 mapsnd 6925 mapsn 6927 pw2f1odclem 7089 mapen 7101 mapunen 7106 updjudhcoinlf 7373 updjudhcoinrg 7374 updjud 7375 omp1eomlem 7387 dfz2 9652 uzn0 9873 unirnioo 10309 dfioo2 10310 ioorebasg 10311 fzen 10380 fseq1p1m1 10432 2ffzeq 10479 fvinim0ffz 10591 frecuzrdglem 10777 frecuzrdgtcl 10778 frecuzrdg0 10779 frecuzrdgfunlem 10785 frecuzrdg0t 10788 seq3val 10826 seqvalcd 10827 ser0f 10900 ffz0hash 11204 fnfzo0hash 11206 wrdred1hash 11272 shftf 11519 uzin2 11676 rexanuz 11677 prodf1f 12233 eff2 12370 reeff1 12390 tanvalap 12398 1arithlem4 13068 1arith 13069 isgrpinv 13784 kerf1ghm 14008 cnfldadd 14727 cnfldmul 14729 cnfldplusf 14739 cnfldsub 14740 znunit 14824 psrbaglecl 14841 lmbr2 15096 cncnpi 15110 cncnp 15112 cnpdis 15124 lmff 15131 tx1cn 15151 tx2cn 15152 upxp 15154 txcnmpt 15155 uptx 15156 xmettpos 15252 blrnps 15293 blrn 15294 xmeterval 15317 qtopbasss 15403 cnbl0 15416 cnblcld 15417 cnfldms 15418 tgioo 15436 tgqioo 15437 dvfre 15592 plyreres 15646 reeff1o 15655 pilem1 15661 ioocosf1o 15736 dfrelog 15742 mpodvdsmulf1o 15875 fsumdvdsmul 15876 012of 16784 2o01f 16785 taupi 16876 |
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