Vladimir Derkach

475 total citations
17 papers, 180 citations indexed

About

Vladimir Derkach is a scholar working on Mathematical Physics, Computational Theory and Mathematics and Applied Mathematics. According to data from OpenAlex, Vladimir Derkach has authored 17 papers receiving a total of 180 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Mathematical Physics, 11 papers in Computational Theory and Mathematics and 10 papers in Applied Mathematics. Recurrent topics in Vladimir Derkach's work include Spectral Theory in Mathematical Physics (14 papers), Matrix Theory and Algorithms (8 papers) and Holomorphic and Operator Theory (6 papers). Vladimir Derkach is often cited by papers focused on Spectral Theory in Mathematical Physics (14 papers), Matrix Theory and Algorithms (8 papers) and Holomorphic and Operator Theory (6 papers). Vladimir Derkach collaborates with scholars based in Ukraine, United States and Finland. Vladimir Derkach's co-authors include Seppo Hassi, Henk de Snoo, M. M. Malamud, Harry Dym, Eduard Tsekanovskiı̆, Yury Arlinskii̇̆, Branko Ćurgus, Jussi Behrndt, Marius Mitrea and Fritz Gesztesy and has published in prestigious journals such as Transactions of the American Mathematical Society, Journal of Functional Analysis and Proceedings of the American Mathematical Society.

In The Last Decade

Vladimir Derkach

14 papers receiving 165 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Vladimir Derkach Ukraine	8	144	116	93	22	20	17	180
Annemarie Luger Sweden	7	96 0.7×	66 0.6×	69 0.7×	17 0.8×	27 1.4×	29	154
James B. Kennedy Portugal	9	141 1.0×	115 1.0×	104 1.1×	16 0.7×	8 0.4×	26	201
Hikmet Koyunbakan Türkiye	10	261 1.8×	127 1.1×	153 1.6×	27 1.2×	46 2.3×	56	325
A. G. Kostyuchenko Russia	11	233 1.6×	168 1.4×	135 1.5×	20 0.9×	21 1.1×	41	280
N. Filonov Russia	8	139 1.0×	116 1.0×	68 0.7×	21 1.0×	5 0.3×	36	179
V. Matsaev Israel	11	239 1.7×	172 1.5×	152 1.6×	24 1.1×	22 1.1×	32	306
R. Mennicken Germany	8	206 1.4×	160 1.4×	153 1.6×	26 1.2×	28 1.4×	28	284
Vadim Tkachenko Israel	9	130 0.9×	57 0.5×	81 0.9×	56 2.5×	12 0.6×	27	189
Ian Wood United Kingdom	6	124 0.9×	113 1.0×	60 0.6×	11 0.5×	4 0.2×	23	156
Georgii S. Litvinchuk Ukraine	3	180 1.3×	104 0.9×	250 2.7×	21 1.0×	33 1.6×	3	336

Countries citing papers authored by Vladimir Derkach

Since Specialization

Citations

This map shows the geographic impact of Vladimir Derkach's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Vladimir Derkach with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Vladimir Derkach more than expected).

Fields of papers citing papers by Vladimir Derkach

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Vladimir Derkach. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Vladimir Derkach. The network helps show where Vladimir Derkach may publish in the future.

Co-authorship network of co-authors of Vladimir Derkach

This figure shows the co-authorship network connecting the top 25 collaborators of Vladimir Derkach. A scholar is included among the top collaborators of Vladimir Derkach based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Vladimir Derkach. Vladimir Derkach is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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17 of 17 papers shown

Derkach, Vladimir & Harry Dym. (2018). Rigged de Branges–Pontryagin spaces and their application to extensions and embedding. Journal of Functional Analysis. 277(1). 31–110. 5 indexed citations

Behrndt, Jussi, Vladimir Derkach, Fritz Gesztesy, & Marius Mitrea. (2017). Coupling of symmetric operators and the third Green identity. Bulletin of Mathematical Sciences. 8(1). 49–80. 1 indexed citations

Derkach, Vladimir, et al.. (2017). An operator approach to the indefinite Stieltjes moment problem. Journal of Mathematical Sciences. 227(1). 33–67. 4 indexed citations

Ćurgus, Branko & Vladimir Derkach. (2014). Partially Fundamentally Reducible Operators in Kreĭn Spaces. Integral Equations and Operator Theory. 82(4). 469–518.

Derkach, Vladimir & Harry Dym. (2014). A Generalized Schur–Takagi Interpolation Problem. Integral Equations and Operator Theory. 80(2). 165–227. 1 indexed citations

Derkach, Vladimir, Seppo Hassi, & Henk de Snoo. (2012). Truncated moment problems in the class of generalized Nevanlinna functions. Mathematische Nachrichten. 285(14-15). 1741–1769. 8 indexed citations

Derkach, Vladimir, et al.. (2011). Darboux transformations of Jacobi matrices and Padé approximation. Linear Algebra and its Applications. 435(12). 3056–3084. 9 indexed citations

Derkach, Vladimir & Harry Dym. (2009). Bitangential Interpolation in Generalized Schur Classes. Complex Analysis and Operator Theory. 4(4). 701–765. 6 indexed citations

Arlinskii̇̆, Yury, et al.. (2008). On realization of the Kreĭn–Langer class N_κ of matrix‐valued functions in Pontryagin spaces. Mathematische Nachrichten. 281(10). 1380–1399. 2 indexed citations

10.

Derkach, Vladimir, et al.. (2007). INTERPOLATION IN GENERALIZED NEVANLINNA AND STIELTJES CLASSES. 4 indexed citations

11.

Derkach, Vladimir, Seppo Hassi, M. M. Malamud, & Henk de Snoo. (2006). Boundary relations and their Weyl families. Transactions of the American Mathematical Society. 358(12). 5351–5401. 74 indexed citations

12.

Derkach, Vladimir, et al.. (2004). Spectral problems for generalized Jacobi matrices. Linear Algebra and its Applications. 382. 1–24. 17 indexed citations

13.

Derkach, Vladimir & Seppo Hassi. (2003). A reproducing kernel space model for 𝐍_{𝜅}-functions. Proceedings of the American Mathematical Society. 131(12). 3795–3806. 7 indexed citations

14.

Derkach, Vladimir, Seppo Hassi, & Henk de Snoo. (2003). Singular Perturbations of Self-Adjoint Operators. Mathematical Physics Analysis and Geometry. 6(4). 349–384. 19 indexed citations

15.

Derkach, Vladimir, Seppo Hassi, & Henk de Snoo. (2002). SINGULAR PERTURBATIONS OF SELFADJOINT OPERATORS. Osuva (University of Vaasa). 2 indexed citations

16.

Derkach, Vladimir, Seppo Hassi, & Henk de Snoo. (2002). Rank One Perturbations in a Pontryagin Space with One Negative Square. Journal of Functional Analysis. 188(2). 317–349. 10 indexed citations

17.

Derkach, Vladimir. (1997). On Indefinite Moment Problems and Resolvent Matrices of Hermitian Operators in Kreîn Spaces. Mathematische Nachrichten. 184(1). 135–166. 11 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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