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arXiv 2102.10899math.DScs.SYeess.SY
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具有空间积分的平均椭圆台球不变量

Average Elliptic Billiard Invariants with Spatial Integrals

Jair Koiller, Dan Reznik, Ronaldo Garcia

摘要:

我们比较不变量的N-周期轨迹的椭圆台球,经典的和新的,他们的非周期性的同行通过一个空间积分评估的边界上的椭圆台球。被积函数的权重是一个通用的措施,等于密度的射线击中一个给定的边界点。我们发现,非周期平均是光滑和单调的焦散偏心率,并完全匹配N-周期平均不变量的离散焦散参数,承认一个给定的N-周期的家庭。

英文摘要:

We compare invariants of N-periodic trajectories in the elliptic billiard, classic and new, to their aperiodic counterparts via a spatial integrals evaluated over the boundary of the elliptic billiard. The integrand is weighed by a universal measure equal to the density of rays hitting a given boundary point. We find that aperiodic averages are smooth and monotonic on caustic eccentricity, and perfectly match N-periodic average invariants at the discrete caustic parameters which admit a given N-periodic family.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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