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math.DG2019
Symmetric spaces with dissecting involutions
Karl-Hermann Neeb, Gestur Olafsson
An involutive diffeomorphism of a connected smooth manifold is called dissecting if the complement of its fixed point set is not connected. Dissecting involutions on a comp…
math.DG2019
Central extensions of Lie groups preserving a differential form
Tobias Diez, Bas Janssens, Karl-Hermann Neeb +1
Let be a manifold with a closed, integral -form , and let be a Fréchet-Lie group acting on . As a generalization of the Kostant-Souriau extension for sympl…