Answer more than 30 days after a question was asked as first answer scoring 2 or more. This badge can be awarded multiple times.
earned this badge 4 times
Closed-forms of real parts of special value dilogarithm identities from inverse tangent integral function
Awarded Jan 3 at 21:41
Awarded Aug 4 '15 at 19:33
Awarded May 7 '13 at 20:38