Past exam of the mathematics course of the University of Cambridge 2019 ia Paper 4 8E c Solution Created 2026-09-24 Updated 2026-09-29
The conclusion remains true, even though the scaling factor and hence the radius may now be arbitrary. At the point where its handle meets its circle, every lollipop contains a simple triod: take a short arc of the circle in each direction together with a short segment of the handle. Pairwise disjoint lollipops therefore contain pairwise disjoint simple triods. The Moore triod theorem says that every such family in the plane is countable, so