Bessa, MárioDel Magno, GianluigiDias, João LopesGaivão, José PedroTorres, Maria Joana2024-11-082024-11-0820240001-8708http://hdl.handle.net/10400.2/16743We show that there exists a C2-open dense set of convex bodies with smooth boundary whose billiard map exhibits a non-trivial hyperbolic basic set. As a consequence billiards in generic convex bodies have positive topological entropy and exponential growth of the number of periodic orbits.engMultidimensional billiardsTopological entropyBilliards in generic convex bodies have positive topological entropyjournal article10.1016/j.aim.2024.109592