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Mirrors > Home > MPE Home > Th. List > Mathboxes > eliuniin2 | Structured version Visualization version Unicode version |
Description: Indexed union of indexed intersections. See eliincex 39293 for a counterexample showing that the precondition cannot be simply dropped. (Contributed by Glauco Siliprandi, 26-Jun-2021.) |
Ref | Expression |
---|---|
eliuniin2.1 | |
eliuniin2.2 |
Ref | Expression |
---|---|
eliuniin2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eliuniin2.2 | . . . . 5 | |
2 | 1 | eleq2i 2693 | . . . 4 |
3 | eliun 4524 | . . . 4 | |
4 | 2, 3 | sylbb 209 | . . 3 |
5 | eliin 4525 | . . . . . 6 | |
6 | 5 | ibi 256 | . . . . 5 |
7 | 6 | a1i 11 | . . . 4 |
8 | 7 | reximdv 3016 | . . 3 |
9 | 4, 8 | mpd 15 | . 2 |
10 | eliuniin2.1 | . . . 4 | |
11 | nfcv 2764 | . . . 4 | |
12 | 10, 11 | nfne 2894 | . . 3 |
13 | nfv 1843 | . . 3 | |
14 | simp2 1062 | . . . . . . 7 | |
15 | eliin2 39299 | . . . . . . . 8 | |
16 | 15 | biimpar 502 | . . . . . . 7 |
17 | rspe 3003 | . . . . . . 7 | |
18 | 14, 16, 17 | 3imp3i2an 1278 | . . . . . 6 |
19 | 18, 3 | sylibr 224 | . . . . 5 |
20 | 19, 2 | sylibr 224 | . . . 4 |
21 | 20 | 3exp 1264 | . . 3 |
22 | 12, 13, 21 | rexlimd 3026 | . 2 |
23 | 9, 22 | impbid2 216 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 w3a 1037 wceq 1483 wcel 1990 wnfc 2751 wne 2794 wral 2912 wrex 2913 c0 3915 ciun 4520 ciin 4521 |
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-3an 1039 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-ne 2795 df-ral 2917 df-rex 2918 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-nul 3916 df-iun 4522 df-iin 4523 |
This theorem is referenced by: (None) |
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