Moon in a puddle and the four-vertex theorem
arXiv:2107.08455 · doi:10.1080/00029890.2022.2041355
Abstract
We present a proof of the Moon in a puddle theorem, and use its key lemma to prove a generalization of the four-vertex theorem.
5 pges, 6 figure. arXiv admin note: text overlap with arXiv:2012.11814