Finite deficiency indices and uniform remainder in Weyl's law

Details Finite deficiency indices and uniform remainder in Weyl's law Finite deficiency indices and uniform remainder in Weyl's law

2010-01-12

arxiv.org/abs/1001.1795v2

Mathematics

Spectral Theory

7 p., references added

Scientific paper

We give a proof that in settings where Von Neumann deficiency indices are finite the spectral counting functions of two different self-adjoint extensions of the same symmetric operator differ by a uniformly bounded term (see also Birman-Solomjak's 'Spectral Theory of Self-adjoint operators in Hilbert Space') >. We apply this result to quantum graphs, pseudo-laplacians and surfaces with conical singularities.

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