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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 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-rex 2918 | . . 3 | |
2 | euor2 2514 | . . 3 | |
3 | 1, 2 | sylnbi 320 | . 2 |
4 | df-reu 2919 | . . 3 | |
5 | elun 3753 | . . . . . 6 | |
6 | 5 | anbi1i 731 | . . . . 5 |
7 | andir 912 | . . . . . 6 | |
8 | orcom 402 | . . . . . 6 | |
9 | 7, 8 | bitri 264 | . . . . 5 |
10 | 6, 9 | bitri 264 | . . . 4 |
11 | 10 | eubii 2492 | . . 3 |
12 | 4, 11 | bitri 264 | . 2 |
13 | df-reu 2919 | . 2 | |
14 | 3, 12, 13 | 3bitr4g 303 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wi 4 wb 196 wo 383 wa 384 wex 1704 wcel 1990 weu 2470 wrex 2913 wreu 2914 cun 3572 |
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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