Unipotent Invariant Matrices
classification
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keywords
fixedgenericmatricesunipotentvarietyactinganti-symmetricbilinear
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We describe the variety of fixed points of a unipotent operator acting on the space of matrices. We compute the determinant and the rank of a generic (symmetric, or anti-symmetric) matrix in the fixed variety, yielding information about the generic singular locus of the corresponding bilinear form.
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