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Mirrors > Home > MPE Home > Th. List > reuun2 | Structured version Visualization version Unicode version |
Description: Transfer uniqueness to a smaller or larger class. (Contributed by NM, 21-Oct-2005.) |
Ref | Expression |
---|---|
reuun2 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-rex 2918 |
. . 3
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2 | euor2 2514 |
. . 3
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3 | 1, 2 | sylnbi 320 |
. 2
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4 | df-reu 2919 |
. . 3
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5 | elun 3753 |
. . . . . 6
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6 | 5 | anbi1i 731 |
. . . . 5
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7 | andir 912 |
. . . . . 6
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8 | orcom 402 |
. . . . . 6
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9 | 7, 8 | bitri 264 |
. . . . 5
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10 | 6, 9 | bitri 264 |
. . . 4
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11 | 10 | eubii 2492 |
. . 3
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12 | 4, 11 | bitri 264 |
. 2
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13 | df-reu 2919 |
. 2
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14 | 3, 12, 13 | 3bitr4g 303 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-rex 2918 df-reu 2919 df-v 3202 df-un 3579 |
This theorem is referenced by: hdmap14lem4a 37163 |
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