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| Mirrors > Home > ILE Home > Th. List > f1f1orn | Unicode version | ||
| Description: A one-to-one function maps one-to-one onto its range. (Contributed by NM, 4-Sep-2004.) |
| Ref | Expression |
|---|---|
| f1f1orn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1fn 5600 |
. 2
| |
| 2 | df-f1 5382 |
. . 3
| |
| 3 | 2 | simprbi 275 |
. 2
|
| 4 | f1orn 5649 |
. 2
| |
| 5 | 1, 3, 4 | sylanbrc 421 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-11 1559 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-in 3226 df-ss 3233 df-f 5381 df-f1 5382 df-fo 5383 df-f1o 5384 |
| This theorem is used by: f1ores 5654 f1cnv 5663 f1cocnv1 5669 f1ocnvfvrneq 5988 ssenen 7152 f1dmvrnfibi 7258 cc2lem 7633 hashf1lem1 11301 hashf1lem2 11302 4sqlem11 13203 xpsff1o2 13725 imasmndf1 13814 imasgrpf1 13968 conjsubgen 14134 imasrngf1 14340 imasringf1 14454 usgrf1o 16581 uspgrf1oedg 16583 |
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