Finsler metrics on symmetric cones

Finsler metrics on symmetric cones
复制标题

对称锥体上的芬斯勒度量

DOI:
--
复制
发表时间:
2000
期刊:
影响因子:
--
通讯作者:
Y. Lim
Y. Lim
中科院分区:
--
文献类型:
--
作者:
Y. Lim

文献摘要

被引文献

相似文献

抽象。设V是具有结合内积的单欧氏若当代数 $langle cdot| cdot angle,$,let $Omega$是相应的对称圆锥。让 ${mathcal J}(V)$是V的所有本原幂等元的紧对称空间。我们证明了由下式定义的函数s(a,B) [ s(a,B)=suplimits_{cin{mathcal J}(V)}|洛格朗格河|C 角-对数角B| C 角度| ] 是一 $G(Omega)$(的自同构群 $Omega$)-不变完备度量 $Ω $,它与自然芬斯勒距离一致, 欧米茄。我们还证明了度量s(a,B)(严格)收缩任何(严格)共形压缩 $欧米茄$。
Abstract. Let V be a simple Euclidean Jordan algebra with an associative inner product $langle cdot|cdot angle,$ and let $Omega$ be the corresponding symmetric cone. Let ${mathcal J}(V)$ be the compact symmetric space of all primitive idempotents of V. We show that the function s(a,b) defined by [ s(a,b)=suplimits_{cin{mathcal J}(V)}|loglangle a|c angle-loglangle b|c angle| ] is a $G(Omega)$ (the automorphism group of $Omega$)-invariant complete metric on $Omega$ and it coincides with a natural Finsler distance on $Omega.$ We also show that the metric s(a,b) (strictly) contracts any (strict) conformal compression of $Omega$.