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| Description: A one-to-one onto function is an onto function. |
| Ref | Expression |
|---|---|
| f1ofo |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dff1o3 3770 |
. 2
| |
| 2 | 1 | pm3.26bi 320 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: f1imacnv 3781 f1ococnv2 3784 f1dmex 3786 fo00 3791 isoini 3976 isofrlem 3977 isowe 3979 f1oweALT 3982 ncanth 3984 curry1 4208 curry2 4211 f1imaen 4509 en1 4513 canth2 4571 ssenen 4593 phplem4 4600 php3 4604 ssfi 4625 unifi 4642 fiint 4644 fodomfi 4650 unbenlem 7629 ruc 7674 infxpidmlem8 7684 infxpidmlem10 7686 infxpidmlem11 7687 infmap2lem1 7704 cnvunop 9960 counop 9963 idunop 10019 elunop2 10055 eqindhome 10677 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 994 ax-gen 995 ax-8 996 ax-10 998 ax-12 1000 ax-17 1003 ax-4 1005 ax-5o 1007 ax-6o 1010 ax-9o 1155 ax-10o 1173 ax-16 1243 ax-11o 1251 ax-ext 1494 |
| This theorem depends on definitions: df-bi 145 df-an 223 df-ex 1013 df-sb 1205 df-clab 1500 df-cleq 1505 df-clel 1508 df-in 2095 df-ss 2097 df-f 3249 df-f1 3250 df-fo 3251 df-f1o 3252 |