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math.KT2013
Symmetric Representation Rings are -Rings
Marcus Zibrowius
The representation ring of an affine algebraic group scheme can be endowed with the structure of a (special) -ring. We show that the same is true for the ring of symmetric repre…
math.KT2013★ 2 cited
Twisted Witt Groups of Flag Varieties
Marcus Zibrowius
Calmès and Fasel have shown that the twisted Witt groups of split flag varieties vanish in a large number of cases. For flag varieties over algebraically closed fields, we sharpen…