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pro vyhledávání: '"Janas, Jan"'
This paper provides decay bounds for Green matrices and generalized eigenvectors of block Jacobi operators when the real part of the spectral parameter lies in a bounded gap of the operator's essential spectrum. The case of the spectral parameter bei
Externí odkaz:
http://arxiv.org/abs/1905.04688
This work deals with decay bounds for Green matrices and generalized eigenvectors of block Jacobi matrices when the real part of the spectral parameter lies in an infinite gap of the operator's essential spectrum. We consider the cases of commutative
Externí odkaz:
http://arxiv.org/abs/1801.01924
We investigate the asymptotic behaviour of large eigenvalues for a class of finite difference self-adjoint operators with compact resolvent in $l^2$.
Externí odkaz:
http://arxiv.org/abs/1206.1763
Autor:
Janas, Jan, Simonov, Sergey
We consider discrete Schroedinger operator J with Wigner-von Neumann potential not belonging to l^2. We find asymptotics of orthonormal polynomials associated to J. We prove the Weyl-Titchmarsh type formula, which relates the spectral density of J to
Externí odkaz:
http://arxiv.org/abs/1003.3319
Bounds on the exponential decay of generalized eigenfunctions of bounded and unbounded selfadjoint Jacobi matrices are established. Two cases are considered separately: (i) the case in which the spectral parameter lies in a general gap of the spectru
Externí odkaz:
http://arxiv.org/abs/0711.4035
Publikováno v:
In Journal of Approximation Theory March 2018 227:51-69
Autor:
Janas, Jan, Naboko, Serguei
Publikováno v:
Proceedings of the American Mathematical Society, 1999 Mar 01. 127(3), 791-800.
Externí odkaz:
https://www.jstor.org/stable/119012
Autor:
JANAS, JAN
Publikováno v:
Mathematica Scandinavica, 2001 Jan 01. 88(1), 126-136.
Externí odkaz:
https://www.jstor.org/stable/24491875
Autor:
Janas, Jan
Publikováno v:
Proceedings of the American Mathematical Society, 1975 Jul 01. 50(1), 303-308.
Externí odkaz:
https://www.jstor.org/stable/2040557
Autor:
JANAS, JAN, NABOKO, SERGUEI N.
Publikováno v:
Journal of Operator Theory, 1998 Jul 01. 40(1), 113-132.
Externí odkaz:
https://www.jstor.org/stable/24714730