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Large-Time Series Expansion of the Wave Front Length in the Euclidean Disk
Experimental Mathematics ( IF 0.5 ) Pub Date : 2022-05-09 , DOI: 10.1080/10586458.2022.2063208 Yves Colin de Verdière 1 , David Vicente 2
中文翻译:
欧几里德圆盘中波前长度的大时间序列展开
更新日期:2022-05-09
Experimental Mathematics ( IF 0.5 ) Pub Date : 2022-05-09 , DOI: 10.1080/10586458.2022.2063208 Yves Colin de Verdière 1 , David Vicente 2
Affiliation
Abstract
In the paper [4 Vicente, D. (2020). Une goutte d’eau dans un bol. Quadrature 117. [Google Scholar]], the second author proves that the length of the wave front St at time t of a wave propagating in an Euclidean disk of radius 1, starting from a source q, admits a linear asymptotics as : with and . We will give a more direct proof and compute the oscillating corrections to this linear asymptotics. The proof is based on the “stationary phase” approximation.
中文翻译:
欧几里德圆盘中波前长度的大时间序列展开
摘要
在论文[ 4 维森特,D.(2020 年)。Une goutte d'eau dans un bol。正交117。 [Google Scholar] ],第二作者证明长度在欧几里得圆盘中传播的波在时间t的波前S t半径为 1 的,从源q开始,允许线性渐近为:和和. 我们将给出更直接的证明并计算该线性渐近的振荡修正。证明基于“平稳阶段”近似。