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Mirrors > Home > ILE Home > Th. List > reupick | Unicode version |
Description: Restricted uniqueness "picks" a member of a subclass. (Contributed by NM, 21-Aug-1999.) |
Ref | Expression |
---|---|
reupick |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssel 2993 |
. . 3
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2 | 1 | ad2antrr 471 |
. 2
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3 | df-rex 2354 |
. . . . . 6
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4 | df-reu 2355 |
. . . . . 6
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5 | 3, 4 | anbi12i 447 |
. . . . 5
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6 | 1 | ancrd 319 |
. . . . . . . . . . 11
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7 | 6 | anim1d 329 |
. . . . . . . . . 10
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8 | an32 526 |
. . . . . . . . . 10
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9 | 7, 8 | syl6ib 159 |
. . . . . . . . 9
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10 | 9 | eximdv 1801 |
. . . . . . . 8
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11 | eupick 2020 |
. . . . . . . . 9
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12 | 11 | ex 113 |
. . . . . . . 8
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13 | 10, 12 | syl9 71 |
. . . . . . 7
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14 | 13 | com23 77 |
. . . . . 6
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15 | 14 | imp32 253 |
. . . . 5
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16 | 5, 15 | sylan2b 281 |
. . . 4
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17 | 16 | expcomd 1370 |
. . 3
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18 | 17 | imp 122 |
. 2
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19 | 2, 18 | impbid 127 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 |
This theorem depends on definitions: df-bi 115 df-nf 1390 df-sb 1686 df-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-rex 2354 df-reu 2355 df-in 2979 df-ss 2986 |
This theorem is referenced by: supelti 6415 |
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