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Regular version of the site

Article

Proper affine actions on semisimple Lie algebras

Annales de l'Institut Fourier. 2016. Vol. 66. No. 2 . P. 785-831.

For any noncompact semisimple real Lie group G, we construct a group of affine transformations of its Lie algebra g whose linear part is Zariskidense in Ad G and which is free, nonabelian and acts properly discontinuously on g.