Generalized resolvents and the boundary value problems for Hermitian operators with gaps VA Derkach, MM Malamud Journal of Functional Analysis 95 (1), 1-95, 1991 | 662 | 1991 |
The extension theory of Hermitian operators and the moment problem VA Derkach, MM Malamud Journal of mathematical sciences 73 (2), 141-242, 1995 | 396 | 1995 |
Boundary relations and their Weyl families V Derkach, S Hassi, M Malamud, H De Snoo Transactions of the American Mathematical Society 358 (12), 5351-5400, 2006 | 193 | 2006 |
Generalized resolvents of symmetric operators and admissibility HSV de Snoo, VA Derkach, S Hassi, MM Malamud Methods of Functional Analysis and Topology 6 (03), 24-55, 2000 | 140 | 2000 |
Boundary relations and generalized resolvents of symmetric operators V Derkach, S Hassi, M Malamud, H de Snoo Russian Journal of Mathematical Physics 16 (1), 17-60, 2009 | 117 | 2009 |
On the Weyl function and Hermite operators with lacunae VA Derkach, MM Malamud Doklady Akademii Nauk 293 (5), 1041-1046, 1987 | 91 | 1987 |
On generalized resolvents of Hermitian relations in Krein spaces VA Derkach Journal of Mathematical Sciences 97 (5), 4420-4460, 1999 | 82 | 1999 |
On Weyl function and generalized resolvents of a Hermitian operator in a Krein space V Derkach Integral Equations and Operator Theory 23, 387-415, 1995 | 68 | 1995 |
Operator models associated with Kac subclasses of generalized Nevanlinna functions H de Snoo, V Derkach, S Hassi Methods of Functional Analysis and Topology 5 (01), 65-87, 1999 | 55 | 1999 |
Boundary triplets and Weyl functions. Recent developments VA Derkach, S Hassi, MM Malamud, HSV de Snoo London Mathematical Society Lecture Note Series 1 (404), 161-220, 2012 | 54 | 2012 |
Characteristic functions of almost solvable extensions of Hermitian operators VA Derkach, MM Malamud Ukrainian Mathematical Journal 44 (4), 379-401, 1992 | 53 | 1992 |
Sectorial extensions of a positive operator and the characteristic function VA Derkach, MM Malamud, P Tsekanovskii Ukrainian Mathematical Journal 41 (2), 136-142, 1989 | 52 | 1989 |
Singular perturbations of self-adjoint operators V Derkach, S Hassi, H de Snoo Mathematical Physics, Analysis and Geometry 6, 349-384, 2003 | 43 | 2003 |
Extension theory of symmetric operators and boundary value problems VA Derkach, MM Malamud Proceedings of Institute of Mathematics of NAS of Ukraine 104, 2017 | 40 | 2017 |
Spectral problems for generalized Jacobi matrices M Derevyagin, V Derkach Linear algebra and its applications 382, 1-24, 2004 | 38 | 2004 |
On the convergence of Padé approximations for generalized Nevanlinna functions M Derevyagin, V Derkach Transactions of the Moscow Mathematical Society 68, 119-162, 2007 | 34 | 2007 |
Weyl function of a Hermitian operator and its connection with characteristic function V Derkach, M Malamud arXiv preprint arXiv:1503.08956, 2015 | 33 | 2015 |
Rank one perturbations in a Pontryagin space with one negative square V Derkach, S Hassi, H de Snoo Journal of Functional Analysis 188 (2), 317-349, 2002 | 26 | 2002 |
A realization theorem for generalized Nevanlinna families J Behrndt, VA Derkach, S Hassi, HSV De Snoo Operators and Matrices 5 (4), 679-706, 2011 | 25 | 2011 |
On some classes of holomorphic operator functions with nonnegative imaginary part VA Derkach, MM Malamud Operator Algebras and Related Topics, 16th International Conference on …, 1997 | 25 | 1997 |