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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 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | exrot4 1621 | . . 3 | |
2 | 1 | 2exbii 1537 | . 2 |
3 | ee4anv 1850 | . . . 4 | |
4 | 3 | 2exbii 1537 | . . 3 |
5 | 4 | 2exbii 1537 | . 2 |
6 | ee4anv 1850 | . 2 | |
7 | 2, 5, 6 | 3bitri 204 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 102 wb 103 wex 1421 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-4 1440 ax-17 1459 ax-ial 1467 |
This theorem depends on definitions: df-bi 115 df-nf 1390 |
This theorem is referenced by: enq0tr 6624 |
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