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Karpenko, Nikita A.
- Orthogonal and Symplectic Grassmannians of Division Algebras
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1 Universite Pierre et Marie Curie, Institute de Mathematiques de Jussieu, Paris, FR
1 Universite Pierre et Marie Curie, Institute de Mathematiques de Jussieu, Paris, FR
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Journal of the Ramanujan Mathematical Society, Vol 28, No 2 (2013), Pagination: 213–222Abstract
We consider a central division algebra (over a field) endowed with a quadratic pair or with a symplectic involution and prove 2-incompressibility of certain varieties of isotropic right ideals of the algebra. This covers a recent conjecture raised by M. Zhykhovich. The remaining related projective homogeneous varieties are 2-compressible in general.- On Anisotropy of Orthogonal Involutions
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1 WestMlische Wilhelms-Universitat, Mathematisches Institut, Einsteinstr. 62, D-48149 Munster, DE
1 WestMlische Wilhelms-Universitat, Mathematisches Institut, Einsteinstr. 62, D-48149 Munster, DE