# Submanifolds and Holonomy

Jurgen Berndt ; Sergio Console ; Carlos Enrique Olmos

Submanifolds and Holonomy, Second Edition explores recent progress in the submanifold geometry of space forms, including new
methods based on the holonomy of the normal connection. This second edition reflects many developments that have occurred since the publication of its popular predecessor. Les mer

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New to the Second Edition

New chapter on normal holonomy of complex submanifolds

New chapter on the Berger-Simons holonomy theorem

New chapter on the skew-torsion holonomy system

New chapter on polar actions on symmetric spaces of compact type

New chapter on polar actions on symmetric spaces of noncompact type

New section on the existence of slices and principal orbits for isometric actions

New subsection on maximal totally geodesic submanifolds

New subsection on the index of symmetric spaces

The book uses the reduction of codimension, Moore's lemma for local splitting, and the normal holonomy theorem to address the geometry of submanifolds. It presents a unified treatment of new proofs and main results of homogeneous submanifolds, isoparametric submanifolds, and their generalizations to Riemannian manifolds, particularly Riemannian symmetric spaces.

Basics of Submanifold Theory in Space Forms

The fundamental equations for submanifolds of space forms

Models of space forms

Principal curvatures

Totally geodesic submanifolds of space forms

Reduction of the codimension

Totally umbilical submanifolds of space forms

Reducibility of submanifolds

Submanifold Geometry of Orbits

Isometric actions of Lie groups

Existence of slices and principal orbits for isometric actions

Polar actions and s-representations

Equivariant maps

Homogeneous submanifolds of Euclidean spaces

Homogeneous submanifolds of hyperbolic spaces

Second fundamental form of orbits

Symmetric submanifolds

Isoparametric hypersurfaces in space forms

Algebraically constant second fundamental form

The Normal Holonomy Theorem

Normal holonomy

The normal holonomy theorem

Proof of the normal holonomy theorem

Some geometric applications of the normal holonomy theorem

Further remarks

Isoparametric Submanifolds and Their Focal Manifolds

Submersions and isoparametric maps

Isoparametric submanifolds and Coxeter groups

Geometric properties of submanifolds with constant principal curvatures

Homogeneous isoparametric submanifolds

Isoparametric rank

Rank Rigidity of Submanifolds and Normal Holonomy of Orbits

Submanifolds with curvature normals of constant length and rank of homogeneous submanifolds

Normal holonomy of orbits

Homogeneous Structures on Submanifolds

Homogeneous structures and homogeneity

Examples of homogeneous structures

Isoparametric submanifolds of higher rank

Normal Holonomy of Complex Submanifolds

Polar-like properties of the foliation by holonomy tubes

Shape operators with some constant eigenvalues in parallel manifolds

The canonical foliation of a full holonomy tube

Applications to complex submanifolds of Cn with nontransitive normal holonomy

Applications to complex submanifolds of CPn with nontransitive normal holonomy

The Berger-Simons Holonomy Theorem

Holonomy systems

The Simons holonomy theorem

The Berger holonomy theorem

The Skew-Torsion Holonomy Theorem

Fixed point sets of isometries and homogeneous submanifolds

Naturally reductive spaces

Totally skew one-forms with values in a Lie algebra

The derived 2-form with values in a Lie algebra

The skew-torsion holonomy theorem

Applications to naturally reductive spaces

Submanifolds of Riemannian Manifolds

Submanifolds and the fundamental equations

Focal points and Jacobi fields

Totally geodesic submanifolds

Totally umbilical submanifolds and extrinsic spheres

Symmetric submanifolds

Submanifolds of Symmetric Spaces

Totally geodesic submanifolds

Totally umbilical submanifolds and extrinsic spheres

Symmetric submanifolds

Submanifolds with parallel second fundamental form

Polar Actions on Symmetric Spaces of Compact Type

Polar actions - rank one

Polar actions - higher rank

Hyperpolar actions - higher rank

Cohomogeneity one actions - higher rank

Hypersurfaces with constant principal curvatures

Polar Actions on Symmetric Spaces of Noncompact Type

Dynkin diagrams of symmetric spaces of noncompact type

Parabolic subalgebras

Polar actions without singular orbits

Hyperpolar actions without singular orbits

Polar actions on hyperbolic spaces

Cohomogeneity one actions - higher rank

Hypersurfaces with constant principal curvatures

Appendix: Basic Material

Exercises appear at the end of each chapter.

The fundamental equations for submanifolds of space forms

Models of space forms

Principal curvatures

Totally geodesic submanifolds of space forms

Reduction of the codimension

Totally umbilical submanifolds of space forms

Reducibility of submanifolds

Submanifold Geometry of Orbits

Isometric actions of Lie groups

Existence of slices and principal orbits for isometric actions

Polar actions and s-representations

Equivariant maps

Homogeneous submanifolds of Euclidean spaces

Homogeneous submanifolds of hyperbolic spaces

Second fundamental form of orbits

Symmetric submanifolds

Isoparametric hypersurfaces in space forms

Algebraically constant second fundamental form

The Normal Holonomy Theorem

Normal holonomy

The normal holonomy theorem

Proof of the normal holonomy theorem

Some geometric applications of the normal holonomy theorem

Further remarks

Isoparametric Submanifolds and Their Focal Manifolds

Submersions and isoparametric maps

Isoparametric submanifolds and Coxeter groups

Geometric properties of submanifolds with constant principal curvatures

Homogeneous isoparametric submanifolds

Isoparametric rank

Rank Rigidity of Submanifolds and Normal Holonomy of Orbits

Submanifolds with curvature normals of constant length and rank of homogeneous submanifolds

Normal holonomy of orbits

Homogeneous Structures on Submanifolds

Homogeneous structures and homogeneity

Examples of homogeneous structures

Isoparametric submanifolds of higher rank

Normal Holonomy of Complex Submanifolds

Polar-like properties of the foliation by holonomy tubes

Shape operators with some constant eigenvalues in parallel manifolds

The canonical foliation of a full holonomy tube

Applications to complex submanifolds of Cn with nontransitive normal holonomy

Applications to complex submanifolds of CPn with nontransitive normal holonomy

The Berger-Simons Holonomy Theorem

Holonomy systems

The Simons holonomy theorem

The Berger holonomy theorem

The Skew-Torsion Holonomy Theorem

Fixed point sets of isometries and homogeneous submanifolds

Naturally reductive spaces

Totally skew one-forms with values in a Lie algebra

The derived 2-form with values in a Lie algebra

The skew-torsion holonomy theorem

Applications to naturally reductive spaces

Submanifolds of Riemannian Manifolds

Submanifolds and the fundamental equations

Focal points and Jacobi fields

Totally geodesic submanifolds

Totally umbilical submanifolds and extrinsic spheres

Symmetric submanifolds

Submanifolds of Symmetric Spaces

Totally geodesic submanifolds

Totally umbilical submanifolds and extrinsic spheres

Symmetric submanifolds

Submanifolds with parallel second fundamental form

Polar Actions on Symmetric Spaces of Compact Type

Polar actions - rank one

Polar actions - higher rank

Hyperpolar actions - higher rank

Cohomogeneity one actions - higher rank

Hypersurfaces with constant principal curvatures

Polar Actions on Symmetric Spaces of Noncompact Type

Dynkin diagrams of symmetric spaces of noncompact type

Parabolic subalgebras

Polar actions without singular orbits

Hyperpolar actions without singular orbits

Polar actions on hyperbolic spaces

Cohomogeneity one actions - higher rank

Hypersurfaces with constant principal curvatures

Appendix: Basic Material

Exercises appear at the end of each chapter.

Jurgen Berndt is a professor of mathematics at King's College London. He is the author of two research monographs and more
than 50 research articles. His research interests encompass geometrical problems with algebraic, analytic, or topological
aspects, particularly the geometry of submanifolds, curvature of Riemannian manifolds, geometry of homogeneous manifolds,
and Lie group actions on manifolds. He earned a PhD from the University of Cologne.

Sergio Console (1965-2013) was a researcher in the Department of Mathematics at the University of Turin. He was the author or coauthor of more than 30 publications. His research focused on differential geometry and algebraic topology.

Carlos Enrique Olmos is a professor of mathematics at the National University of Cordoba and principal researcher at the Argentine Research Council (CONICET). He is the author of more than 35 research articles. His research interests include Riemannian geometry, geometry of submanifolds, submanifolds, and holonomy. He earned a PhD from the National University of Cordoba.

Sergio Console (1965-2013) was a researcher in the Department of Mathematics at the University of Turin. He was the author or coauthor of more than 30 publications. His research focused on differential geometry and algebraic topology.

Carlos Enrique Olmos is a professor of mathematics at the National University of Cordoba and principal researcher at the Argentine Research Council (CONICET). He is the author of more than 35 research articles. His research interests include Riemannian geometry, geometry of submanifolds, submanifolds, and holonomy. He earned a PhD from the National University of Cordoba.