Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Demuth, Michael"'
Autor:
Demuth, Michael.
Univ., Diss.--Kiel, 2004.
Literaturverz. S. [127] - 132.
Literaturverz. S. [127] - 132.
Externí odkaz:
http://www.gbv.de/dms/spk/sbb/recht/toc/389344028.pdf
Publikováno v:
Journal of Functional Analysis, 268 (2015) 1032-1052
Let $L_0$ be a bounded operator on a Banach space, and consider a perturbation $L=L_0+K$, where $K$ is compact. This work is concerned with obtaining bounds on the number of eigenvalues of $L$ in subsets of the complement of the essential spectrum of
Externí odkaz:
http://arxiv.org/abs/1409.8569
Autor:
Demuth, Michael
The matter of this survey is the so-called disappointed-beneficiary cases. In these cases an intended beneficiary of a will suffers a loss, because the will is rendered invalid due to legal malpractice of the will-preparing lawyer. There are several
Externí odkaz:
http://hdl.handle.net/11427/35320
Autor:
Demuth, Michael, Hanauska, Franz
Let Z_0 be a bounded operator in a Banach space X with purely essential spectrum and K a nuclear operator in X. Using methods of complex analysis we study the discrete spectrum of Z_0+K and derive a Lieb-Thirring type inequality. We obtain estimates
Externí odkaz:
http://arxiv.org/abs/1309.4594
Publikováno v:
Operator Theory: Advances and Applications, Vol. 232, 107-163, 2013
The central problem we consider is the distribution of eigenvalues of closed linear operators which are not selfadjoint, with a focus on those operators which are obtained as perturbations of selfadjoint linear operators. Two methods are explained an
Externí odkaz:
http://arxiv.org/abs/1209.0266
Publikováno v:
Journal of Functional Analysis 257 (2009) 2742-2759
We prove quantitative bounds on the eigenvalues of non-selfadjoint unbounded operators obtained from selfadjoint operators by a perturbation that is relatively-Schatten. These bounds are applied to obtain new results on the distribution of eigenvalue
Externí odkaz:
http://arxiv.org/abs/0908.2188
We prove quantitative bounds on the eigenvalues of non-selfadjoint bounded and unbounded operators. We use the perturbation determinant to reduce the problem to one of studying the zeroes of a holomorphic function.
Externí odkaz:
http://arxiv.org/abs/0802.2468
Autor:
Demuth, Michael, Katriel, Guy
We prove conditions on potentials which imply that the sum of the negative eigenvalues of the Schroeodinger operator is finite. We use a method for bounding eigenvalues based on estimates of the Hilbert-Schmidt norm of semigroup differences and on co
Externí odkaz:
http://arxiv.org/abs/0802.2032