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Mirrors > Home > ILE Home > Th. List > ee8anv | Unicode version |
Description: Rearrange existential quantifiers. (Contributed by Jim Kingdon, 23-Nov-2019.) |
Ref | Expression |
---|---|
ee8anv |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | exrot4 1627 |
. . 3
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2 | 1 | 2exbii 1543 |
. 2
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3 | ee4anv 1858 |
. . . 4
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4 | 3 | 2exbii 1543 |
. . 3
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5 | 4 | 2exbii 1543 |
. 2
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6 | ee4anv 1858 |
. 2
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7 | 2, 5, 6 | 3bitri 205 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1382 ax-7 1383 ax-gen 1384 ax-ie1 1428 ax-ie2 1429 ax-4 1446 ax-17 1465 ax-ial 1473 |
This theorem depends on definitions: df-bi 116 df-nf 1396 |
This theorem is referenced by: enq0tr 7054 |
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