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Dynamics of flows and maps (continuous and discrete time), including infinite-dimensional dynamics, Hamiltonian dynamics, ergodic theory.

1 vote

Types of triangles admitting periodic billiard orbits

This paper in 2018 showed that all obtuse triangles with angles at most 112.3 degrees have periodic trajectories. It's also a computed assisted proof but not the same method as Richard Schwarz's. http …
Pubo Huang's user avatar