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Mirrors > Home > ILE Home > Th. List > Mathboxes > bj-indint | Unicode version |
Description: The property of being an inductive class is closed under intersections. (Contributed by BJ, 30-Nov-2019.) |
Ref | Expression |
---|---|
bj-indint |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-bj-ind 14819 |
. . . . 5
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2 | 1 | simplbi 274 |
. . . 4
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3 | 2 | rgenw 2532 |
. . 3
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4 | 0ex 4132 |
. . . 4
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5 | 4 | elintrab 3858 |
. . 3
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6 | 3, 5 | mpbir 146 |
. 2
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7 | bj-indsuc 14820 |
. . . . . 6
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8 | 7 | a2i 11 |
. . . . 5
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9 | 8 | ralimi 2540 |
. . . 4
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10 | vex 2742 |
. . . . 5
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11 | 10 | elintrab 3858 |
. . . 4
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12 | 10 | bj-sucex 14815 |
. . . . 5
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13 | 12 | elintrab 3858 |
. . . 4
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14 | 9, 11, 13 | 3imtr4i 201 |
. . 3
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
15 | 14 | rgen 2530 |
. 2
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16 | df-bj-ind 14819 |
. 2
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17 | 6, 15, 16 | mpbir2an 942 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-nul 4131 ax-pr 4211 ax-un 4435 ax-bd0 14705 ax-bdor 14708 ax-bdex 14711 ax-bdeq 14712 ax-bdel 14713 ax-bdsb 14714 ax-bdsep 14776 |
This theorem depends on definitions: df-bi 117 df-tru 1356 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ral 2460 df-rex 2461 df-rab 2464 df-v 2741 df-dif 3133 df-un 3135 df-nul 3425 df-sn 3600 df-pr 3601 df-uni 3812 df-int 3847 df-suc 4373 df-bdc 14733 df-bj-ind 14819 |
This theorem is referenced by: bj-omind 14826 |
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