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Mirrors > Home > ILE Home > Th. List > reu3 | Unicode version |
Description: A way to express restricted uniqueness. (Contributed by NM, 24-Oct-2006.) |
Ref | Expression |
---|---|
reu3 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | reurex 2568 |
. . 3
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2 | reu6 2782 |
. . . 4
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3 | bi1 116 |
. . . . . 6
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4 | 3 | ralimi 2427 |
. . . . 5
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5 | 4 | reximi 2459 |
. . . 4
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6 | 2, 5 | sylbi 119 |
. . 3
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7 | 1, 6 | jca 300 |
. 2
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8 | rexex 2411 |
. . . 4
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9 | 8 | anim2i 334 |
. . 3
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10 | nfv 1462 |
. . . . 5
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11 | 10 | eu3 1988 |
. . . 4
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12 | df-reu 2356 |
. . . 4
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13 | df-rex 2355 |
. . . . 5
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14 | df-ral 2354 |
. . . . . . 7
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15 | impexp 259 |
. . . . . . . 8
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16 | 15 | albii 1400 |
. . . . . . 7
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17 | 14, 16 | bitr4i 185 |
. . . . . 6
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18 | 17 | exbii 1537 |
. . . . 5
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19 | 13, 18 | anbi12i 448 |
. . . 4
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20 | 11, 12, 19 | 3bitr4i 210 |
. . 3
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21 | 9, 20 | sylibr 132 |
. 2
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22 | 7, 21 | impbii 124 |
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 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2064 |
This theorem depends on definitions: df-bi 115 df-nf 1391 df-sb 1687 df-eu 1945 df-mo 1946 df-cleq 2075 df-clel 2078 df-ral 2354 df-rex 2355 df-reu 2356 df-rmo 2357 |
This theorem is referenced by: reu7 2788 bdreu 10804 |
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