2008
DOI: 10.1007/s00020-008-1629-y
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Local Minimal Curves in Homogeneous Reductive Spaces of the Unitary Group of a Finite von Neumann Algebra

Abstract: We study the metric geometry of homogeneous reductive spaces of the unitary group of a finite von Neumann algebra with a non complete Riemannian metric. The main result gives an abstract sufficient condition in order that the geodesics of the Levi-Civita connection are locally minimal. Then, we show how this result applies to several examples. Mathematics Subject Classification (2000). Primary 58B20; Secondary 46L10.

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Cited by 2 publications
(2 citation statements)
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“…Therefore in the case of p = 2 the classical theory of Riemann-Hilbert manifolds is not available, so it makes sense to ask about the local minimality of the geodesics of the Levi-Civita connection. In [6] was given an abstract sufficient condition in order that these geodesics are locally minimal. In this section we shall prove a partial result toward the minimality of geodesics for p even, under the hypothesis specified below.…”
Section: Minimality Of Geodesics In Omentioning
confidence: 99%
“…Therefore in the case of p = 2 the classical theory of Riemann-Hilbert manifolds is not available, so it makes sense to ask about the local minimality of the geodesics of the Levi-Civita connection. In [6] was given an abstract sufficient condition in order that these geodesics are locally minimal. In this section we shall prove a partial result toward the minimality of geodesics for p even, under the hypothesis specified below.…”
Section: Minimality Of Geodesics In Omentioning
confidence: 99%
“…Los resultados originales expuestos en este trabajo están basados en los artículos [ACL09], [Ch08], [Ch09a] y [Ch09b]. Los primeros dos artículos son acerca de geometría métrica en espacios homogéneos del grupo unitario de unálgebra de von Neumann finita.…”
Section: Principales Resultados Obtenidos En Este Trabajounclassified