Evolution of convex lens-shaped networks
under curve shortening flow, Oliver Schnürer, Abderrahim Azouani, Marc Georgi,
Juliette Hell, Nihar Jangle, Amos Koeller, Tobias Marxen,
Sandra Ritthaler, Mariel Sáez, Felix Schulze, and Brian Smith,
accepted by Trans. Amer. Math. Soc.