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arXiv 0906.4901math.RTmath.SG
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李准态

Lie quasi-states

Michael Entov, Leonid Polterovich

摘要:

实李代数上的李拟态是任意交换子代数上的线性泛函。我们证明了在秩至少为3的辛李代数上,只有一个连续的非线性李拟态(直到一个标量因子,模线性泛函)。它与辛矩阵路的渐近Maslov指标有关。

英文摘要:

Lie quasi-states on a real Lie algebra are functionals which are linear on any abelian subalgebra. We show that on the symplectic Lie algebra of rank at least 3 there is only one continuous non-linear Lie quasi-state (up to a scalar factor, modulo linear functionals). It is related to the asymptotic Maslov index of paths of symplectic matrices.

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