THE motion of a perfectly elastic billiard ball upon a convex billiard table is a highly typical system of dynamical systems. Let Γ be the boundary of a billiard table, strictly convex and C^1 smooth. The ball is ass...THE motion of a perfectly elastic billiard ball upon a convex billiard table is a highly typical system of dynamical systems. Let Γ be the boundary of a billiard table, strictly convex and C^1 smooth. The ball is assumed to roll on the table. It goes straight until it hits the boundary Γ where the ball bounces off according to the law that the angle of incidence is equal to the angle of reflection. Its path will be a closed n-sided polygon inscribed in Γ having no coincident sides, if and only if the motion is periodic with the positive number n as its minimal period. This is called n-bounce periodic orbit. If an n-bounce periodic orbit makes κ circuits of Γ展开更多
The variational method is used to obtain some existence theorems of periodic solutions of sublinear systems with or not with impacts under suitable growth conditions. Compared with normal systems, impact systems need ...The variational method is used to obtain some existence theorems of periodic solutions of sublinear systems with or not with impacts under suitable growth conditions. Compared with normal systems, impact systems need additional conditions to ensure the existence of periodic bouncing solutions.展开更多
文摘THE motion of a perfectly elastic billiard ball upon a convex billiard table is a highly typical system of dynamical systems. Let Γ be the boundary of a billiard table, strictly convex and C^1 smooth. The ball is assumed to roll on the table. It goes straight until it hits the boundary Γ where the ball bounces off according to the law that the angle of incidence is equal to the angle of reflection. Its path will be a closed n-sided polygon inscribed in Γ having no coincident sides, if and only if the motion is periodic with the positive number n as its minimal period. This is called n-bounce periodic orbit. If an n-bounce periodic orbit makes κ circuits of Γ
基金Supported by National Natural Science Foundation of China(Grant Nos.11501308,11271277 and 11571249)Jiangsu Government Scholarship for Overseas Studies
文摘The variational method is used to obtain some existence theorems of periodic solutions of sublinear systems with or not with impacts under suitable growth conditions. Compared with normal systems, impact systems need additional conditions to ensure the existence of periodic bouncing solutions.
