AUTHOR : S. Tabachnikov : EDITOR/ART : R. Ghrist : This review is for the preprint: F. Wegner, From elastica to floating bodies of equilibrium, https://arxiv.org/abs/1909.12596. Problem No 19 in [14] reads: Is a solid of uniform density which will float in water in every position a sphere? This question by S. Ulam can be […]