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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 5514 |
. . . 4
| |
| 2 | focdmex 6181 |
. . . 4
| |
| 3 | 1, 2 | syl5 32 |
. . 3
|
| 4 | 3 | imp 124 |
. 2
|
| 5 | f1oen2g 6823 |
. . 3
| |
| 6 | 5 | 3com23 1211 |
. 2
|
| 7 | 4, 6 | mpd3an3 1349 |
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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-coll 4149 ax-sep 4152 ax-pow 4208 ax-pr 4243 ax-un 4469 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-reu 2482 df-rab 2484 df-v 2765 df-sbc 2990 df-csb 3085 df-un 3161 df-in 3163 df-ss 3170 df-pw 3608 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-iun 3919 df-br 4035 df-opab 4096 df-mpt 4097 df-id 4329 df-xp 4670 df-rel 4671 df-cnv 4672 df-co 4673 df-dm 4674 df-rn 4675 df-res 4676 df-ima 4677 df-iota 5220 df-fun 5261 df-fn 5262 df-f 5263 df-f1 5264 df-fo 5265 df-f1o 5266 df-fv 5267 df-en 6809 |
| This theorem is referenced by: f1oen 6827 f1imaeng 6860 xpen 6915 fidifsnen 6940 dif1en 6949 f1ofi 7018 f1dmvrnfibi 7019 omp1eom 7170 endjusym 7171 eninl 7172 eninr 7173 summodclem2 11564 zsumdc 11566 prodmodclem2 11759 zproddc 11761 eulerthlemh 12424 4sqlem11 12595 ssnnctlemct 12688 conjsubgen 13484 znfi 14287 znhash 14288 2omapen 15727 pwf1oexmid 15730 |
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