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| Mirrors > Home > MPE Home > Th. List > fofun | Structured version Visualization version GIF version | ||
| Description: An onto mapping is a function. (Contributed by NM, 29-Mar-2008.) |
| Ref | Expression |
|---|---|
| fofun | ⊢ (𝐹:𝐴–onto→𝐵 → Fun 𝐹) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fof 6782 | . 2 ⊢ (𝐹:𝐴–onto→𝐵 → 𝐹:𝐴⟶𝐵) | |
| 2 | 1 | ffund 6700 | 1 ⊢ (𝐹:𝐴–onto→𝐵 → Fun 𝐹) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 Fun wfun 6519 –onto→wfo 6523 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-9 2155 ax-ext 2737 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-ex 1803 df-cleq 2757 df-ss 3924 df-fn 6528 df-f 6529 df-fo 6531 |
| This theorem is referenced by: foco 6796 foimacnv 6828 resdif 6832 fococnv2 6837 focdmex 7941 fodomfi2 10032 fin1a2lem7 10378 brdom3 10500 1stf1 18238 1stf2 18239 2ndf1 18241 2ndf2 18242 1stfcl 18243 2ndfcl 18244 qtopcld 23831 qtopcmap 23837 elfm3 24068 bcthlem4 25447 uniiccdif 25698 bdayimaon 27815 nosupno 27825 noinfno 27840 bdayfun 27898 noeta2 27912 precsexlem10 28367 precsexlem11 28368 grporn 30782 xppreima 32902 fsuppcurry1 32981 fsuppcurry2 32982 qtophaus 34143 onvfowev 35471 poimirlem26 38157 poimirlem27 38158 ovoliunnfl 38173 voliunnfl 38175 fonex 49496 |
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