On a Question of Connes and Zagier Regarding Parallelograms Inscribed in a Pair of Confocal Ellipses

Nicolae Anghel. On a Question of Connes and Zagier Regarding Parallelograms Inscribed in a Pair of Confocal Ellipses. The American Mathematical Monthly, 117(9):828-831, 2010. [doi]

Abstract

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