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2018-05-21  01:54 hrs.

Equivariant versions of indices of 1-forms and of the Euler obstruction

W. Ebeling
Institut fur Algebraische Geometrie, Leibniz Universitat Hannover

Resumen:

For a complex analytic variety with an action of a finite group and for an invariant 1-form on it, we give equivariant versions (with values in the Burnside ring of the group) of the radial index, the GSV-index and of the local Euler obstruction of the 1-form and describe their relations. In particular, this leads to equivariant versions of the local Euler obstruction of a complex analytic space and of the global Euler obstruction. This is joint work with Sabir Gusein-Zade.

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