Topics in Representation Theory of Real and p-adic Groups

这个项目涉及表征理论中的两个主题。 第一个是通过研究仿射Hecke代数在标量扩张下的行为来更深入地理解p-adic群的表示。看来这样的代数将完全控制p-adic群的表示理论。第二个项目是调查一个明确的家庭的最高权向量的张量积表示的GLn。这似乎是第一个这样明确给出的家庭。主要的问题是，它们是否真的跨越了所有最高权向量的空间。表示论是利用对称性存在的主要数学技术。例如，氢原子的结构，量子力学的基本计算之一，是由表示论控制的。关于表示论的另一种思考方式是把它作为特征值和矩阵理论的推广，很多人在大学的基础线性代数课程中看到过这些理论。这个项目解决了表征理论中的两个重要问题。其中一个可能对数论有重要的应用。另一个是量子力学中角动量理论的推广。它将有助于描述一对相当一般类型的相互作用的量子力学系统如何分裂成更简单的系统。

AbstractRoger HoweYale9970626This project concerns two topics in representation theory. The first is to attain a deeper understanding of representations of p-adic groups by studying the behavior of affine Hecke algebras under extension of scalars. It appears that such algebras will completely control the representation theory of p-adic groups. The second project is to investigate an explicit family of highest weight vectors in tensor products of representations of GLn. These appear to be the first such explicitly given family. The main question is, whether they infact span the space of all highest weight vectors.Representation theory is a major mathematical technique for exploiting the presence of symmetry. For example, the structure of the hydrogen atom, one of the fundamental computations in quantum mechanics, is controlled by representation theory. Another way of thinking about representation theory is as a generalization of the theory of eigenvalues and matrices that many people see in a college course on basic linear algebra. This project addresses two important questions in representation theory. One potentially has important applications to number theory. The other concerns a generalization of the theory of angular momentum in quantum mechanics. It will help describe how pair of interacting quantum mechanical systems of a rather general type breaks up into simpler systems.