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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 5356 | . 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 3211 ran crn 4750 Fn wfn 5347 ⟶wf 5348 |
| 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 5356 |
| This theorem is referenced by: ffnd 5509 ffun 5511 frel 5513 fdm 5514 ffrn 5520 fresin 5543 fresaunres2disj 5545 fcoi1 5547 feu 5549 f0bi 5560 fnconstg 5565 f1fn 5575 fofn 5592 dffo2 5594 fimadmfo 5599 f1ofn 5615 fdmeu 5720 feqmptd 5730 fvco3 5748 ffvelcdm 5810 dff2 5821 dffo3 5824 dffo4 5825 dffo5 5826 f1ompt 5828 ffnfv 5835 fcompt 5847 fsn2 5851 fconst2g 5899 fconstfvm 5902 fdmexb 5908 fex 5915 dff13 5941 cocan1 5960 off 6279 suppssof1 6284 ofco 6285 caofref 6291 caofrss 6298 caoftrn 6299 fo1stresm 6355 fo2ndresm 6356 1stcof 6357 2ndcof 6358 fo2ndf 6423 fsuppeq 6447 fsuppeqg 6448 tposf2 6499 smoiso 6533 tfrcllemssrecs 6583 tfrcllemsucaccv 6585 elmapfn 6905 mapsnd 6923 mapsn 6925 pw2f1odclem 7087 mapen 7099 mapunen 7104 updjudhcoinlf 7371 updjudhcoinrg 7372 updjud 7373 omp1eomlem 7385 dfz2 9650 uzn0 9870 unirnioo 10306 dfioo2 10307 ioorebasg 10308 fzen 10377 fseq1p1m1 10428 2ffzeq 10475 fvinim0ffz 10587 frecuzrdglem 10773 frecuzrdgtcl 10774 frecuzrdg0 10775 frecuzrdgfunlem 10781 frecuzrdg0t 10784 seq3val 10822 seqvalcd 10823 ser0f 10896 ffz0hash 11200 fnfzo0hash 11202 wrdred1hash 11268 shftf 11515 uzin2 11672 rexanuz 11673 prodf1f 12229 eff2 12366 reeff1 12386 tanvalap 12394 1arithlem4 13064 1arith 13065 isgrpinv 13767 kerf1ghm 13991 cnfldadd 14710 cnfldmul 14712 cnfldplusf 14722 cnfldsub 14723 znunit 14807 psrbaglecl 14824 lmbr2 15079 cncnpi 15093 cncnp 15095 cnpdis 15107 lmff 15114 tx1cn 15134 tx2cn 15135 upxp 15137 txcnmpt 15138 uptx 15139 xmettpos 15235 blrnps 15276 blrn 15277 xmeterval 15300 qtopbasss 15386 cnbl0 15399 cnblcld 15400 cnfldms 15401 tgioo 15419 tgqioo 15420 dvfre 15575 plyreres 15629 reeff1o 15638 pilem1 15644 ioocosf1o 15719 dfrelog 15725 mpodvdsmulf1o 15858 fsumdvdsmul 15859 012of 16767 2o01f 16768 taupi 16859 |
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