Elli Heesch, Heinrich Heesch and Hilbert’s eighteenth problem: collaborative research between philosophy, mathematics and application (Q6546580)

In this insightful article, the author skillfully accomplishes three challenging tasks with rigor: 1) providing well-documented biographical information about the mathematician/philosopher siblings Heinrich Heesch and Elli Heesch, 2) detailing their collaboration and presenting intriguing documents that confirm their joint work on the regular tiling problem, despite Elli Heesch's contributions being largely unknown to the public, and 3) discussing the broader context of this lack of recognition, addressing significant ethical and philosophical questions. The paper concludes with an thoughtful discussion on these important issues.