Homogeneous hypersurfaces in symmetric spaces

A hypersurface of a Riemannian manifold is called homogeneous if it is an orbit of an isometric action on the ambient manifold. Homogeneous hypersurfaces have remarkable geometric properties, providing the simplest examples of hypersurfaces with constant mean curvature. Thus, they are crucial for th...

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Detalles Bibliográficos
Autores: Díaz Ramos, José Carlos, Domínguez Vázquez, Miguel, Otero Casal, Tomás
Tipo de recurso: capítulo de libro
Fecha de publicación:2023
País:España
Institución:Universidad de Santiago de Compostela (USC)
Repositorio:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
Idioma:inglés
OAI Identifier:oai:minerva.usc.gal:10347/44120
Acceso en línea:https://hdl.handle.net/10347/44120
Access Level:acceso abierto
Palabra clave:Symmetric space
noncompact type
homogeneous submanifold
isometric action
cohomogeneity one action
isoparametric hypersurface
minimal submanifold
constant principal curvatures
projective space
hyperbolic space
parabolic subgroup
Descripción
Sumario:A hypersurface of a Riemannian manifold is called homogeneous if it is an orbit of an isometric action on the ambient manifold. Homogeneous hypersurfaces have remarkable geometric properties, providing the simplest examples of hypersurfaces with constant mean curvature. Thus, they are crucial for the investigation of more general types of submanifolds in ambient spaces with large isometry groups. In this survey article we present an introduction to some of the basic geometric, topological, and algebraic features of homogeneous hypersurfaces, describing what is known about their classification problem in symmetric spaces, and explaining the main tools needed for their study in the context of symmetric spaces of noncompact type.