| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 5381 | . 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 |
| This proof depends on syntax axioms: → wi 4 ⊆ wss 3220 ran crn 4775 Fn wfn 5372 ⟶wf 5373 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 |
| This proof depends on definitions: df-bi 117 df-f 5381 |
| This theorem is used by: ffnd 5534 ffun 5536 frel 5538 fdm 5539 ffrn 5545 fresin 5568 fresaunres2disj 5570 fcoi1 5572 feu 5574 f0bi 5585 fnconstg 5590 f1fn 5600 fofn 5617 dffo2 5619 fimadmfo 5624 f1ofn 5640 fdmeu 5746 feqmptd 5756 fvco3 5776 ffvelcdm 5841 dff2 5852 dffo3 5855 dffo4 5856 dffo5 5857 f1ompt 5859 ffnfv 5866 fcompt 5878 fsn2 5882 fconst2g 5930 fconstfvm 5933 fdmexb 5939 fex 5947 dff13 5974 cocan1 5993 off 6315 suppssof1 6320 ofco 6321 caofref 6327 caofrss 6334 caoftrn 6335 fo1stresm 6395 fo2ndresm 6396 1stcof 6397 2ndcof 6398 fo2ndf 6463 fsuppeq 6487 fsuppeqg 6488 tposf2 6539 smoiso 6573 tfrcllemssrecs 6623 tfrcllemsucaccv 6625 elmapfn 6952 mapsnd 6970 mapsn 6972 pw2f1odclem 7134 mapen 7146 mapunen 7151 updjudhcoinlf 7420 updjudhcoinrg 7421 updjud 7422 omp1eomlem 7434 dfz2 9717 uzn0 9938 unirnioo 10375 dfioo2 10376 ioorebasg 10377 fzen 10447 fseq1p1m1 10501 2ffzeq 10548 fvinim0ffz 10660 frecuzrdglem 10848 frecuzrdgtcl 10849 frecuzrdg0 10850 frecuzrdgfunlem 10856 frecuzrdg0t 10859 seq3val 10897 seqvalcd 10898 ser0f 10971 ffz0hash 11276 fnfzo0hash 11278 wrdred1hash 11348 shftf 11595 uzin2 11753 rexanuz 11754 prodf1f 12310 eff2 12447 reeff1 12467 tanvalap 12475 1arithlem4 13145 1arith 13146 isgrpinv 13859 kerf1ghm 14077 cnfldadd 14899 cnfldmul 14901 cnfldplusf 14911 cnfldsub 14912 znunit 14994 psrbaglecl 15060 lmbr2 15315 cncnpi 15329 cncnp 15331 cnpdis 15343 lmff 15350 tx1cn 15370 tx2cn 15371 upxp 15373 txcnmpt 15374 uptx 15375 xmettpos 15471 blrnps 15512 blrn 15513 xmeterval 15536 qtopbasss 15622 cnbl0 15635 cnblcld 15636 cnfldms 15637 tgioo 15655 tgqioo 15656 dvfre 15811 plyreres 15865 reeff1o 15874 pilem1 15880 ioocosf1o 15955 dfrelog 15961 mpodvdsmulf1o 16104 fsumdvdsmul 16105 012of 17023 2o01f 17024 taupi 17123 |
| Copyright terms: Public domain | W3C validator |