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Mirrors > Home > MPE Home > Th. List > Mathboxes > imaiun1 | Structured version Visualization version Unicode version |
Description: The image of an indexed union is the indexed union of the images. (Contributed by RP, 29-Jun-2020.) |
Ref | Expression |
---|---|
imaiun1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rexcom4 3225 | . . . 4 | |
2 | vex 3203 | . . . . . 6 | |
3 | 2 | elima3 5473 | . . . . 5 |
4 | 3 | rexbii 3041 | . . . 4 |
5 | eliun 4524 | . . . . . . 7 | |
6 | 5 | anbi2i 730 | . . . . . 6 |
7 | r19.42v 3092 | . . . . . 6 | |
8 | 6, 7 | bitr4i 267 | . . . . 5 |
9 | 8 | exbii 1774 | . . . 4 |
10 | 1, 4, 9 | 3bitr4ri 293 | . . 3 |
11 | 2 | elima3 5473 | . . 3 |
12 | eliun 4524 | . . 3 | |
13 | 10, 11, 12 | 3bitr4i 292 | . 2 |
14 | 13 | eqriv 2619 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wa 384 wceq 1483 wex 1704 wcel 1990 wrex 2913 cop 4183 ciun 4520 cima 5117 |
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 ax-sep 4781 ax-nul 4789 ax-pr 4906 |
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-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-iun 4522 df-br 4654 df-opab 4713 df-xp 5120 df-cnv 5122 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 |
This theorem is referenced by: trclimalb2 38018 |
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