<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Structure-Preserving on Chen Kai Blog</title><link>https://www.chenk.top/zh/tags/structure-preserving/</link><description>Recent content in Structure-Preserving on Chen Kai Blog</description><generator>Hugo</generator><language>zh-CN</language><lastBuildDate>Sun, 30 Jun 2024 09:00:00 +0000</lastBuildDate><atom:link href="https://www.chenk.top/zh/tags/structure-preserving/index.xml" rel="self" type="application/rss+xml"/><item><title>偏微分方程与机器学习（五）：辛几何与保结构网络</title><link>https://www.chenk.top/zh/pde-ml/05-%E8%BE%9B%E5%87%A0%E4%BD%95%E4%B8%8E%E4%BF%9D%E7%BB%93%E6%9E%84%E7%BD%91%E7%BB%9C/</link><pubDate>Sun, 30 Jun 2024 09:00:00 +0000</pubDate><guid>https://www.chenk.top/zh/pde-ml/05-%E8%BE%9B%E5%87%A0%E4%BD%95%E4%B8%8E%E4%BF%9D%E7%BB%93%E6%9E%84%E7%BD%91%E7%BB%9C/</guid><description>&lt;p>钟摆能摆很久而不慢慢停下来——能量守恒。地球绕太阳转十亿年也不会突然飞走——角动量守恒。这种“某个量恒定不变”的性质背后，藏着一种叫&lt;strong>辛结构&lt;/strong>的几何。&lt;/p></description></item></channel></rss>