The Finite Section Method for Dissipative Operators
نویسنده
چکیده
We show that for self-adjoint Jacobi matrices and Schrödinger operators, peturbed by dissipative potentials in l(N) and L(0,∞) respectively, the finite section method does not omit any points of the spectrum. In the Schrödinger case two different approaches are presented. Many aspects of the proofs can be expected to carry over to higher dimensions, particularly for a.c. spectrum. This is the authors’ post-print version of the article published by Cambridge University Press in the London Mathematical Society journal Mathematika.
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تاریخ انتشار 2017