首页> 外文期刊>Differential and integral equations >CONVERGENCE TO EQUILIBRIUM FOR DISCRETIZATIONS OF GRADIENT-LIKE FLOWS ON RIEMANNIAN MANIFOLDS
【24h】

CONVERGENCE TO EQUILIBRIUM FOR DISCRETIZATIONS OF GRADIENT-LIKE FLOWS ON RIEMANNIAN MANIFOLDS

机译:黎曼流形上梯度流的离散化的均衡收敛

获取原文
获取原文并翻译 | 示例
           

摘要

In this paper, we consider discretizations of systems of disfferential equations on manifolds that admit a strict Lyapunov function. We study the long-time behavior of the discrete solutions. In the continuous case, if a solution admits an accumulation point for which a Lojasiewicz inequality holds then its trajectory converges. Here we continue the work started in [18] by showing that discrete solutions have the same behavior under mild hypotheses. In particular, we consider the θ-scheme for systems with solutions in Rd and a projected θ-scheme for systems de ned on an embedded manifold. As illustrations, we show that our results apply to existing algorithms:1) Alouges' algorithm for computing minimizing discrete harmonic maps with values in the sphere, and 2) a discretization of the Landau-Lifshitz equations of micromagnetism.
机译:在本文中,我们考虑了允许严格Lyapunov函数的流形上微分方程组的离散化。我们研究离散解决方案的长期行为。在连续的情况下,如果解允许一个Lojasiewicz不等式成立的累加点,则其轨迹会收敛。在这里,我们通过显示离散假设在温和假设下具有相同的行为,继续[18]中的工作。特别是,对于在Rd中具有解的系统,我们考虑θ方案;对于在嵌入式歧管上定义的系统,我们考虑投影的θ方案。作为说明,我们证明了我们的结果适用于现有算法:1)Alouges的算法,用于最小化球面中值的离散谐波图,以及2)离散化微磁的Landau-Lifshitz方程。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号