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| Mirrors > Home > ILE Home > Th. List > alrot4 | Unicode version | ||
| Description: Rotate 4 universal quantifiers twice. (Contributed by NM, 2-Feb-2005.) (Proof shortened by Wolf Lammen, 28-Jun-2014.) |
| Ref | Expression |
|---|---|
| alrot4 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | alrot3 1414 |
. . 3
| |
| 2 | 1 | albii 1399 |
. 2
|
| 3 | alcom 1407 |
. 2
| |
| 4 | alcom 1407 |
. . 3
| |
| 5 | 4 | albii 1399 |
. 2
|
| 6 | 2, 3, 5 | 3bitri 204 |
1
|
| 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 104 ax-ia2 105 ax-ia3 106 ax-5 1376 ax-7 1377 ax-gen 1378 |
| This theorem depends on definitions: df-bi 115 |
| This theorem is referenced by: fun11 4986 |
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