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Mirrors > Home > MPE Home > Th. List > elnn0z | Structured version Visualization version Unicode version |
Description: Nonnegative integer property expressed in terms of integers. (Contributed by NM, 9-May-2004.) |
Ref | Expression |
---|---|
elnn0z |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elnn0 11294 | . 2 | |
2 | elnnz 11387 | . . 3 | |
3 | eqcom 2629 | . . 3 | |
4 | 2, 3 | orbi12i 543 | . 2 |
5 | id 22 | . . . . . 6 | |
6 | 0z 11388 | . . . . . . 7 | |
7 | eleq1 2689 | . . . . . . 7 | |
8 | 6, 7 | mpbii 223 | . . . . . 6 |
9 | 5, 8 | jaoi 394 | . . . . 5 |
10 | orc 400 | . . . . 5 | |
11 | 9, 10 | impbii 199 | . . . 4 |
12 | 11 | anbi1i 731 | . . 3 |
13 | ordir 909 | . . 3 | |
14 | 0re 10040 | . . . . 5 | |
15 | zre 11381 | . . . . 5 | |
16 | leloe 10124 | . . . . 5 | |
17 | 14, 15, 16 | sylancr 695 | . . . 4 |
18 | 17 | pm5.32i 669 | . . 3 |
19 | 12, 13, 18 | 3bitr4i 292 | . 2 |
20 | 1, 4, 19 | 3bitri 286 | 1 |
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