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| Mirrors > Home > ILE Home > Th. List > f1oeng | Unicode version | ||
| Description: The domain and range of a one-to-one, onto function are equinumerous. (Contributed by NM, 19-Jun-1998.) |
| Ref | Expression |
|---|---|
| f1oeng |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1ofo 5641 |
. . . 4
| |
| 2 | focdmex 6334 |
. . . 4
| |
| 3 | 1, 2 | syl5 32 |
. . 3
|
| 4 | 3 | imp 124 |
. 2
|
| 5 | f1oen2g 7031 |
. . 3
| |
| 6 | 5 | 3com23 1240 |
. 2
|
| 7 | 4, 6 | mpd3an3 1379 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4241 ax-sep 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-un 3224 df-in 3226 df-ss 3233 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-iun 4009 df-br 4126 df-opab 4188 df-mpt 4189 df-id 4433 df-xp 4775 df-rel 4776 df-cnv 4777 df-co 4778 df-dm 4779 df-rn 4780 df-res 4781 df-ima 4782 df-iota 5332 df-fun 5374 df-fn 5375 df-f 5376 df-f1 5377 df-fo 5378 df-f1o 5379 df-fv 5380 df-en 7013 |
| This theorem is referenced by: f1oen 7035 f1imaeng 7069 xpen 7135 fidifsnen 7162 dif1en 7173 f1ofi 7247 f1dmvrnfibi 7248 2omapen 7309 omp1eom 7425 endjusym 7426 eninl 7427 eninr 7428 summodclem2 12127 zsumdc 12129 prodmodclem2 12322 zproddc 12324 eulerthlemh 12987 4sqlem11 13158 ssnnctlemct 13315 conjsubgen 14058 gsumf1ofi 14137 znfi 14962 znhash 14963 usgrsizedgen 16368 eupthfi 16606 pw1mapen 16940 pwf1oexmid 16943 |
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