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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0fin 8188 |
. . 3
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2 | eleq1 2689 |
. . 3
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3 | 1, 2 | mpbiri 248 |
. 2
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4 | fzn0 12355 |
. . 3
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5 | onfin2 8152 |
. . . . . 6
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6 | inss2 3834 |
. . . . . 6
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7 | 5, 6 | eqsstri 3635 |
. . . . 5
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8 | eqid 2622 |
. . . . . . 7
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9 | 8 | hashgf1o 12770 |
. . . . . 6
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10 | peano2uz 11741 |
. . . . . . 7
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11 | uznn0sub 11719 |
. . . . . . 7
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12 | 10, 11 | syl 17 |
. . . . . 6
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13 | f1ocnvdm 6540 |
. . . . . 6
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14 | 9, 12, 13 | sylancr 695 |
. . . . 5
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15 | 7, 14 | sseldi 3601 |
. . . 4
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16 | 8 | fzen2 12768 |
. . . 4
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17 | enfii 8177 |
. . . 4
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18 | 15, 16, 17 | syl2anc 693 |
. . 3
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19 | 4, 18 | sylbi 207 |
. 2
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20 | 3, 19 | pm2.61ine 2877 |
1
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