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| Title: | Mathematics at DEC |
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| Moderator: | RUSURE::EDP |
|
| Created: | Mon Feb 03 1986 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 2083 |
| Total number of notes: | 14613 |
2040.0. "Crux Mathematicorum 2129" by RUSURE::EDP (Always mount a scratch monkey.) Mon Apr 15 1996 09:11
Proposed by Stanley Rabinowitz, Westford, Massachusetts, USA.
For n > 1 and i = sqrt(-1), prove or disprove that
1 4n k k*pi
-- sum i tan(----)
4i k=1 4n
gcd(k,n)=1
is an integer.
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