Sum rules and constraints on passive systems A Bernland, A Luger, M Gustafsson
Journal of Physics A: Mathematical and Theoretical 44 (14), 145205, 2011
87 2011 A factorization result for generalized Nevanlinna functions of the classN k A Dijksma, H Langer, A Luger, Y Shondin
Integral Equations and Operator Theory 36 (1), 121-125, 2000
78 2000 An operator theoretic interpretation of the generalized Titchmarsh-Weyl coefficient for a singular Sturm-Liouville problem P Kurasov, A Luger
Mathematical Physics, Analysis and Geometry 14 (2), 115-151, 2011
48 2011 On the number of negative eigenvalues of the Laplacian on a metric graph J Behrndt, A Luger
Journal of Physics A: Mathematical and Theoretical 43 (47), 474006, 2010
39 2010 A factorization of regular generalized Nevanlinna functions A Luger
Integral Equations and Operator Theory 43 (3), 326-345, 2002
36 2002 Minimal realizations of scalar generalized Nevanlinna functions related to their basic factorization A Dijksma, H Langer, A Luger, Y Shondin
Spectral methods for operators of mathematical physics, 69-90, 2004
29 2004 Mark Krein's method of directing functionals and singular potentials C Fulton, H Langer, A Luger
Mathematische Nachrichten 285 (14‐15), 1791-1798, 2012
21 2012 An analytic characterization of the eigenvalues of self-adjoint extensions J Behrndt, A Luger
Journal of Functional Analysis 242 (2), 607-640, 2007
20 2007 Generalized zeros and poles of -functions: On the underlying spectral structure S Hassi, A Luger
20 * Passive approximation and optimization using B-splines Y Ivanenko, M Gustafsson, BLG Jonsson, A Luger, B Nilsson, S Nordebo, ...
SIAM Journal on Applied Mathematics 79 (1), 436-458, 2019
18 2019 A characterization of generalized poles of generalized Nevanlinna functions A Luger
Mathematische Nachrichten 279 (8), 891-910, 2006
18 2006 A class of 2* 2-matrix functions H Langer, A Luger
Glasnik matematički 35 (1), 149-160, 2000
17 2000 Herglotz functions and applications in electromagnetics M Nedic, C Ehrenborg, Y Ivanenko, A Ludvig-Osipov, S Nordebo, A Luger, ...
Advances in Mathematical Methods for Electromagnetics, 491-514, 2020
16 2020 A characterization of Herglotz–Nevanlinna functions in two variables via integral representations A Luger, M Nedic
Arkiv för Matematik 55 (1), 199-216, 2017
16 2017 Approximation of N κ ∞ -functions I: Models and Regularization A Dijksma, A Luger, Y Shondin
Spectral Theory in Inner Product Spaces and Applications: 6th Workshop on …, 2009
13 2009 Geometric properties of measures related to holomorphic functions having positive imaginary or real part A Luger, M Nedic
The Journal of Geometric Analysis 31 (3), 2611-2638, 2021
12 2021 Herglotz–Nevanlinna functions in several variables A Luger, M Nedic
Journal of Mathematical Analysis and Applications 472 (1), 1189-1219, 2019
12 2019 Generalized Nevanlinna functions: operator representations, asymptotic behavior A Luger
Springer, 2015
11 2015 Convergence of generalized Nevanlinna functions H Langer, A Luger, V Matsaev
Acta Scientiarum Mathematicarum 77, 425-437, 2011
11 2011 Minimal models for-functions A Dijksma, A Luger, Y Shondin
Operator Theory and Indefinite Inner Product Spaces: Presented on the …, 2005
11 2005