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Mirrors > Home > MPE Home > Th. List > Mathboxes > rp-fakeinunass | Structured version Visualization version Unicode version |
Description: A special case where a mixture of intersection and union appears to conform to a mixed associative law. (Contributed by Richard Penner, 26-Feb-2020.) |
Ref | Expression |
---|---|
rp-fakeinunass |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rp-fakeanorass 37858 | . . 3 | |
2 | 1 | albii 1747 | . 2 |
3 | dfss2 3591 | . 2 | |
4 | dfcleq 2616 | . . 3 | |
5 | elun 3753 | . . . . . 6 | |
6 | elin 3796 | . . . . . . 7 | |
7 | 6 | orbi1i 542 | . . . . . 6 |
8 | 5, 7 | bitri 264 | . . . . 5 |
9 | elin 3796 | . . . . . 6 | |
10 | elun 3753 | . . . . . . 7 | |
11 | 10 | anbi2i 730 | . . . . . 6 |
12 | 9, 11 | bitri 264 | . . . . 5 |
13 | 8, 12 | bibi12i 329 | . . . 4 |
14 | 13 | albii 1747 | . . 3 |
15 | 4, 14 | bitri 264 | . 2 |
16 | 2, 3, 15 | 3bitr4i 292 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wo 383 wa 384 wal 1481 wceq 1483 wcel 1990 cun 3572 cin 3573 wss 3574 |
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-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-v 3202 df-un 3579 df-in 3581 df-ss 3588 |
This theorem is referenced by: rp-fakeuninass 37862 |
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