Computing the cardinality of the lattice of characteristic subspaces
Linear Algebra and its Applications(2017)
摘要
We obtain the cardinality of the lattice of characteristic subspaces of a nilpotent Jordan matrix when the underlying field is GF(2), the only field where the lattices of characteristic and hyperinvariant subspaces can be different. If the characteristic polynomial of the matrix splits in the field, the general case can be reduced to the nilpotent Jordan case. Results are complex and highly combinatorial, and include the design of an algorithm.
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关键词
15A03,05A10,05A17
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