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Mirrors > Home > MPE Home > Th. List > fzfi | Structured version Visualization version Unicode version |
Description: A finite interval of integers is finite. (Contributed by Jeff Madsen, 2-Sep-2009.) (Revised by Mario Carneiro, 12-Mar-2015.) |
Ref | Expression |
---|---|
fzfi |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0fin 8188 | . . 3 | |
2 | eleq1 2689 | . . 3 | |
3 | 1, 2 | mpbiri 248 | . 2 |
4 | fzn0 12355 | . . 3 | |
5 | onfin2 8152 | . . . . . 6 | |
6 | inss2 3834 | . . . . . 6 | |
7 | 5, 6 | eqsstri 3635 | . . . . 5 |
8 | eqid 2622 | . . . . . . 7 | |
9 | 8 | hashgf1o 12770 | . . . . . 6 |
10 | peano2uz 11741 | . . . . . . 7 | |
11 | uznn0sub 11719 | . . . . . . 7 | |
12 | 10, 11 | syl 17 | . . . . . 6 |
13 | f1ocnvdm 6540 | . . . . . 6 | |
14 | 9, 12, 13 | sylancr 695 | . . . . 5 |
15 | 7, 14 | sseldi 3601 | . . . 4 |
16 | 8 | fzen2 12768 | . . . 4 |
17 | enfii 8177 | . . . 4 | |
18 | 15, 16, 17 | syl2anc 693 | . . 3 |
19 | 4, 18 | sylbi 207 | . 2 |
20 | 3, 19 | pm2.61ine 2877 | 1 |
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