Finsler metrics on symmetric cones
Finsler metrics on symmetric cones
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对称锥体上的芬斯勒度量
DOI:
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发表时间:
2000
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通讯作者:
Y. Lim
中科院分区:
文献类型:
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作者:
Y. Lim
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
$Omega$.