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Mirrors > Home > ILE Home > Th. List > reu2 | Unicode version |
Description: A way to express restricted uniqueness. (Contributed by NM, 22-Nov-1994.) |
Ref | Expression |
---|---|
reu2 |
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfv 1528 |
. . 3
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
2 | 1 | eu2 2070 |
. 2
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3 | df-reu 2462 |
. 2
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
4 | df-rex 2461 |
. . 3
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
5 | df-ral 2460 |
. . . 4
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6 | 19.21v 1873 |
. . . . . 6
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7 | nfv 1528 |
. . . . . . . . . . . . 13
![]() ![]() ![]() ![]() ![]() ![]() | |
8 | nfs1v 1939 |
. . . . . . . . . . . . 13
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
9 | 7, 8 | nfan 1565 |
. . . . . . . . . . . 12
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
10 | eleq1 2240 |
. . . . . . . . . . . . 13
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
11 | sbequ12 1771 |
. . . . . . . . . . . . 13
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
12 | 10, 11 | anbi12d 473 |
. . . . . . . . . . . 12
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13 | 9, 12 | sbie 1791 |
. . . . . . . . . . 11
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14 | 13 | anbi2i 457 |
. . . . . . . . . 10
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15 | an4 586 |
. . . . . . . . . 10
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16 | 14, 15 | bitri 184 |
. . . . . . . . 9
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17 | 16 | imbi1i 238 |
. . . . . . . 8
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18 | impexp 263 |
. . . . . . . 8
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19 | impexp 263 |
. . . . . . . 8
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20 | 17, 18, 19 | 3bitri 206 |
. . . . . . 7
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21 | 20 | albii 1470 |
. . . . . 6
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22 | df-ral 2460 |
. . . . . . 7
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23 | 22 | imbi2i 226 |
. . . . . 6
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24 | 6, 21, 23 | 3bitr4i 212 |
. . . . 5
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25 | 24 | albii 1470 |
. . . 4
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26 | 5, 25 | bitr4i 187 |
. . 3
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27 | 4, 26 | anbi12i 460 |
. 2
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28 | 2, 3, 27 | 3bitr4i 212 |
1
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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-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-ext 2159 |
This theorem depends on definitions: df-bi 117 df-nf 1461 df-sb 1763 df-eu 2029 df-cleq 2170 df-clel 2173 df-ral 2460 df-rex 2461 df-reu 2462 |
This theorem is referenced by: (None) |
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