Arcs intersecting at most once on the 4-punctured sphere
Volume 174 / 2023
Colloquium Mathematicum 174 (2023), 13-35
MSC: Primary 57R99.
DOI: 10.4064/cm8729-6-2023
Published online: 24 August 2023
Abstract
We classify maximal systems of arcs which intersect at most once on the 4-punctured sphere.