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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 5376 | . 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 3220 ran crn 4770 Fn wfn 5367 ⟶wf 5368 |
| 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 5376 |
| This theorem is referenced by: ffnd 5529 ffun 5531 frel 5533 fdm 5534 ffrn 5540 fresin 5563 fresaunres2disj 5565 fcoi1 5567 feu 5569 f0bi 5580 fnconstg 5585 f1fn 5595 fofn 5612 dffo2 5614 fimadmfo 5619 f1ofn 5635 fdmeu 5740 feqmptd 5750 fvco3 5770 ffvelcdm 5832 dff2 5843 dffo3 5846 dffo4 5847 dffo5 5848 f1ompt 5850 ffnfv 5857 fcompt 5869 fsn2 5873 fconst2g 5921 fconstfvm 5924 fdmexb 5930 fex 5937 dff13 5964 cocan1 5983 off 6305 suppssof1 6310 ofco 6311 caofref 6317 caofrss 6324 caoftrn 6325 fo1stresm 6385 fo2ndresm 6386 1stcof 6387 2ndcof 6388 fo2ndf 6453 fsuppeq 6477 fsuppeqg 6478 tposf2 6529 smoiso 6563 tfrcllemssrecs 6613 tfrcllemsucaccv 6615 elmapfn 6942 mapsnd 6960 mapsn 6962 pw2f1odclem 7124 mapen 7136 mapunen 7141 updjudhcoinlf 7410 updjudhcoinrg 7411 updjud 7412 omp1eomlem 7424 dfz2 9696 uzn0 9917 unirnioo 10354 dfioo2 10355 ioorebasg 10356 fzen 10426 fseq1p1m1 10479 2ffzeq 10526 fvinim0ffz 10638 frecuzrdglem 10826 frecuzrdgtcl 10827 frecuzrdg0 10828 frecuzrdgfunlem 10834 frecuzrdg0t 10837 seq3val 10875 seqvalcd 10876 ser0f 10949 ffz0hash 11254 fnfzo0hash 11256 wrdred1hash 11326 shftf 11573 uzin2 11731 rexanuz 11732 prodf1f 12288 eff2 12425 reeff1 12445 tanvalap 12453 1arithlem4 13123 1arith 13124 isgrpinv 13836 kerf1ghm 14054 cnfldadd 14871 cnfldmul 14873 cnfldplusf 14883 cnfldsub 14884 znunit 14966 psrbaglecl 14983 lmbr2 15238 cncnpi 15252 cncnp 15254 cnpdis 15266 lmff 15273 tx1cn 15293 tx2cn 15294 upxp 15296 txcnmpt 15297 uptx 15298 xmettpos 15394 blrnps 15435 blrn 15436 xmeterval 15459 qtopbasss 15545 cnbl0 15558 cnblcld 15559 cnfldms 15560 tgioo 15578 tgqioo 15579 dvfre 15734 plyreres 15788 reeff1o 15797 pilem1 15803 ioocosf1o 15878 dfrelog 15884 mpodvdsmulf1o 16018 fsumdvdsmul 16019 012of 16937 2o01f 16938 taupi 17028 |
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