Mathematical Sciences: Research in Global Analysis

数学科学：全球分析研究

• 批准号: 9002701
• 负责人: Richard Palais
• 金额: $ 17.45万
• 依托单位: Brandeis University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-06-01 至 1992-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9002701&HistoricalAwards=false
• 关键词: Mathematical; Sciences; Research; Global; Analysis

Three investigators will study problems interrelating the geometry and topology of finite dimensional manifolds with analytic, algebraic, and geometric properties of various function spaces that arise in the study of ordinary and partial differential equations on these manifolds. One investigator will study symmetry groups of a variational problem and the geometry of their associated sections and slices. The second will investigate the Grassmannian structures of the solution to integrable systems and the related Painleve analysis of these structures. And the third will analyze the relationship between the Laurent solutions to integrable systems and the geometry of their invariant tori. These three investigators will extend theories involving the geometry and algebra of certain integrable systems. One example of such systems are Hamiltonian differential equations which model the physical behavior of moving objects. These incorporate conservation of energy and momentum in an elegant manner. Solutions to these systems tend to circulate and don't have many of the properties of systems which incorporate friction.

三名研究人员将研究有限维流形的几何和拓扑与各种函数空间的解析、代数和几何性质之间的相互关系，这些性质是在研究这些流形上的常微分方程和偏微分方程式时产生的。一名研究人员将研究变分问题的对称群及其相关截面和切片的几何。第二部分将研究可积系统解的Grassman结构及其相关的Painleve分析。第三章将分析可积系统的Laurent解与其不变环面几何之间的关系。这三位研究人员将扩展涉及某些可积系统的几何和代数的理论。这种系统的一个例子是对运动对象的物理行为进行建模的哈密顿微分方程式。它们以优雅的方式将能量守恒和动量守恒结合在一起。这些系统的解往往是循环的，并不具有包含摩擦的系统的许多属性。