93-28 Koiller J., Markarian R., Oliffson Kmaphorst S., Pinto de Carvalho S.

A Geometric Framework for time-dependent Billiards (42K, LaTeX) Feb 10, 93

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Abstract. Billiards with moving boundaries can be viewed as the limiting case of rigid ones, constructed on an augmented configuration space. The metric is defined by a new kinetic energy, singular in the limit. We describe the symplectic structure of the time-dependent billiard map and specify suitable coordinates for the convex case of dimension 2.

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