Valuations on manifolds and Rumin cohomology

Bernig, Andreas; Bröcker, Ludwig

doi:10.4310/jdg/1175266280

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Journal article

Valuations on manifolds and Rumin cohomology

Bernig, Andreas Département de Mathématiques, Université de Fribourg, Switzerland
Bröcker, Ludwig Mathematisches Institut, Universität Münster, Germany

2007

Published in:

Journal of Differential Geometry. - 2007, vol. 75, no. 3, p. 433-457

English Smooth valuations on manifolds are studied by establishing a link with the Rumin-de Rham complex of the co-sphere bundle. Several operations on differential forms induce operations on smooth valuations: signature operator, Rumin-Laplace operator, Euler-Verdier involution and derivation operator. As an application, Alesker’s Hard Lefschetz Theorem for even translation invariant valuations on a finite-dimensional Euclidean space is generalized to all translation invariant valuations. The proof uses Kaehler identities, the Rumin-de Rham complex and spectral geometry.

Faculty

Faculté des sciences et de médecine

Department

Département de Mathématiques

Language