Hermitian symplectic geometry and extension theory
Hermitian symplectic geometry and extension theory
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厄米辛几何与可拓理论
DOI:
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发表时间:
2000
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通讯作者:
M. Harmer
中科院分区:
文献类型:
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作者:
M. Harmer
Here we give brief account of Hermitian symplectic spaces, showing that they are intimately connected to symmetric as well as self-adjoint extensions of a symmetric operator. Furthermore, we find an explicit parametrization of the Lagrange Grassmannian in terms of the unitary matrices . This allows us to explicitly describe all self-adjoint boundary conditions for the Schrodinger operator on the graph in terms of a unitary matrix. We show that the asymptotics of the scattering matrix can be expressed simply in terms of this unitary matrix.