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Mirrors > Home > MPE Home > Th. List > elfz2nn0 | Structured version Visualization version Unicode version |
Description: Membership in a finite set of sequential nonnegative integers. (Contributed by NM, 16-Sep-2005.) (Revised by Mario Carneiro, 28-Apr-2015.) |
Ref | Expression |
---|---|
elfz2nn0 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elnn0uz 11725 |
. . . 4
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2 | 1 | anbi1i 731 |
. . 3
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3 | eluznn0 11757 |
. . . . . 6
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4 | eluzle 11700 |
. . . . . . 7
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5 | 4 | adantl 482 |
. . . . . 6
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6 | 3, 5 | jca 554 |
. . . . 5
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7 | nn0z 11400 |
. . . . . . . 8
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8 | nn0z 11400 |
. . . . . . . 8
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9 | eluz 11701 |
. . . . . . . 8
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10 | 7, 8, 9 | syl2an 494 |
. . . . . . 7
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11 | 10 | biimprd 238 |
. . . . . 6
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12 | 11 | impr 649 |
. . . . 5
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13 | 6, 12 | impbida 877 |
. . . 4
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14 | 13 | pm5.32i 669 |
. . 3
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15 | 2, 14 | bitr3i 266 |
. 2
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16 | elfzuzb 12336 |
. 2
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17 | 3anass 1042 |
. 2
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18 | 15, 16, 17 | 3bitr4i 292 |
1
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