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Mirrors > Home > MPE Home > Th. List > uniiunlem | Structured version Visualization version Unicode version |
Description: A subset relationship useful for converting union to indexed union using dfiun2 4554 or dfiun2g 4552 and intersection to indexed intersection using dfiin2 4555. (Contributed by NM, 5-Oct-2006.) (Proof shortened by Mario Carneiro, 26-Sep-2015.) |
Ref | Expression |
---|---|
uniiunlem |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqeq1 2626 |
. . . . . 6
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2 | 1 | rexbidv 3052 |
. . . . 5
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3 | 2 | cbvabv 2747 |
. . . 4
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4 | 3 | sseq1i 3629 |
. . 3
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5 | r19.23v 3023 |
. . . . 5
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6 | 5 | albii 1747 |
. . . 4
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7 | ralcom4 3224 |
. . . 4
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8 | abss 3671 |
. . . 4
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9 | 6, 7, 8 | 3bitr4i 292 |
. . 3
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10 | 4, 9 | bitr4i 267 |
. 2
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11 | nfv 1843 |
. . . . 5
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12 | eleq1 2689 |
. . . . 5
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13 | 11, 12 | ceqsalg 3230 |
. . . 4
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14 | 13 | ralimi 2952 |
. . 3
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15 | ralbi 3068 |
. . 3
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16 | 14, 15 | syl 17 |
. 2
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17 | 10, 16 | syl5rbb 273 |
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-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-ral 2917 df-rex 2918 df-v 3202 df-in 3581 df-ss 3588 |
This theorem is referenced by: mreiincl 16256 iunopn 20703 sigaclci 30195 dihglblem5 36587 |
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