01.01.01 (Real analysis, complex analysis, and functional analysis)
Birth date:
18.05.1948
E-mail:
Keywords:
non-selfadjoint operators; characteristic operator-function; spectral theory of conractions; finite dementional perturbation of Volterra operators; matrix Muckenhoupt weights; Hilbert space of entire functions; functional models of operators; unconditional bases; oneparametric semiqroups of operators.
Subject:
It was obtained the description of unconditional bases from values of kernels,which are generated by Muchenhoupt weights on the special contours. It was investigated the shift operators in new Hilbert spaces of entire functions. The problem of free interpalation with entire function of finite order from special classes have been formulated and solved. It was suggested the method of integral estimates the norms of resolvents of finite dimentional perturbations of Volterra operators for investigation the special structure such operators. It was found an application the analytic functions from unit disk from Jerbashian classes to spectral theory of non-weak contractions. It was given a description of generators of $C_0$-semigroups, inverse to which are finite dimentianal perturbation of Volterra operators.
Biography
Graduated from Faculty of Mathematics and Mechanics of Kharkov state university in 1971 (department of mathematical physics). Ph.D. thesis was defendent in 1978. D.Sci. thesis was defended in 1995. A list of my work contains near 50 titles.
Main publications:
Gubreev G. M. Jerbachian A. M. Functions of generalized bounded type in spectral theory of non-weak contractions // Journal of Operator Theory, 1991, 26, 155–190.
G. M. Gubreev, V. N. Levchuk, “Description of Unconditional Bases Formed by Values of the Dunkl Kernels”, Funktsional. Anal. i Prilozhen., 49:1 (2015), 79–82; Funct. Anal. Appl., 49:1 (2015), 64–66
G. M. Gubreev, A. A. Tarasenko, “On the Similarity to Self-Adjoint Operators”, Funktsional. Anal. i Prilozhen., 48:4 (2014), 65–70; Funct. Anal. Appl., 48:4 (2014), 286–290
G. M. Gubreev, G. D. Urum, “On a Class of Convolution Operators on a Finite Interval”, Mat. Zametki, 96:5 (2014), 653–657; Math. Notes, 96:5 (2014), 647–650
2011
4.
G. M. Gubreev, A. A. Tarasenko, “A Criterion for the Unconditional Basis Property of Eigenvectors for Finite-Rank Perturbations of Volterra Operators”, Funktsional. Anal. i Prilozhen., 45:2 (2011), 86–91; Funct. Anal. Appl., 45:2 (2011), 149–153
G. M. Gubreev, A. A. Tarasenko, “Spectral decomposition of model operators in de Branges spaces”, Mat. Sb., 201:11 (2010), 41–76; Sb. Math., 201:11 (2010), 1599–1634
G. M. Gubreev, G. V. Lukashenko, “On a Class of Completely Continuous Operators in Hilbert Spaces”, Funktsional. Anal. i Prilozhen., 43:2 (2009), 75–79; Funct. Anal. Appl., 43:2 (2009), 143–146
G. M. Gubreev, Yu. D. Latushkin, “Perturbations of Strongly Continuous Operator Semigroups, and Matrix Muckenhoupt Weights”, Funktsional. Anal. i Prilozhen., 42:3 (2008), 85–89; Funct. Anal. Appl., 42:3 (2008), 234–238
G. M. Gubreev, A. A. Tarasenko, “Unconditional Reproducing Kernel Bases in de Branges Spaces”, Funktsional. Anal. i Prilozhen., 40:1 (2006), 71–75; Funct. Anal. Appl., 40:1 (2006), 58–61
G. M. Gubreev, “Regular Mittag-Leffler kernels and spectral decomposition of a class of non-selfadjoint operators”, Izv. RAN. Ser. Mat., 69:1 (2005), 17–60; Izv. Math., 69:1 (2005), 15–57
G. M. Gubreev, “Regular Mittag-Leffler Kernels and Volterra Operators”, Funktsional. Anal. i Prilozhen., 38:4 (2004), 82–86; Funct. Anal. Appl., 38:4 (2004), 305–308
2003
12.
G. M. Gubreev, A. A. Tarasenko, “Representability of de Branges Matrices as Blaschke–Potapov Products and Completeness of Some Families of Functions”, Mat. Zametki, 73:6 (2003), 841–847; Math. Notes, 73:6 (2003), 796–801
G. M. Gubreev, M. G. Volkova, “Hilbert space unconditional bases formed by values of an entire vector-function of order 1/2”, Zap. Nauchn. Sem. POMI, 290 (2002), 33–41; J. Math. Sci. (N. Y.), 124:2 (2004), 4861–4866
G. M. Gubreev, “The Structure of Model Volterra Operators, Biorthogonal Expansions, and Interpolation in Regular de Branges Spaces”, Funktsional. Anal. i Prilozhen., 35:2 (2001), 74–78; Funct. Anal. Appl., 35:2 (2001), 142–145
G. M. Gubreev, “Spectral theory of regular quasi-exponentials and regular $B$-representable vector functions (the projection method: 20 years later)”, Algebra i Analiz, 12:6 (2000), 1–97; St. Petersburg Math. J., 12:6 (2001), 875–947
G. M. Gubreev, “Unconditional Bases of Hilbert Spaces Composed of Values of Entire Vector Functions of Exponential Type”, Funktsional. Anal. i Prilozhen., 33:1 (1999), 62–65; Funct. Anal. Appl., 33:1 (1999), 52–55
G. M. Gubreev, “$L_2$-stable semigroups, Muckenhoupt weights, and unconditional bases of values of quasi-exponentials”, Mat. Sb., 190:12 (1999), 3–36; Sb. Math., 190:12 (1999), 1715–1747
G. M. Gubreev, E. I. Olefir, “Unconditional bases, the matrix Muckenhoupt condition, and Carleson series in the spectrum”, Zap. Nauchn. Sem. POMI, 262 (1999), 90–126; J. Math. Sci. (New York), 110:5 (2002), 2955–2978
1997
19.
G. M. Gubreev, V. N. Pyvovarchyk, “Spectral Analysis of the Regge Problem with Parameters”, Funktsional. Anal. i Prilozhen., 31:1 (1997), 70–74; Funct. Anal. Appl., 31:1 (1997), 54–57
G. M. Gubreev, “On one class of bases in Hilbert spaces and the similarity problem for volterra operators”, Funktsional. Anal. i Prilozhen., 26:4 (1992), 64–67; Funct. Anal. Appl., 26:4 (1992), 282–284
21.
G. M. Gubreev, “On a class of unconditional bases in Hilbert spaces and on the problem of similarity of dissipative Volterra operators”, Mat. Sb., 183:9 (1992), 105–146; Russian Acad. Sci. Sb. Math., 77:1 (1994), 93–126
G. M. Gubreev, “Spectral analysis of biorthogonal expansions generated by Muckenhoupt weights”, Zap. Nauchn. Sem. LOMI, 190 (1991), 34–80; J. Math. Sci., 71:1 (1994), 2192–2221
G. M. Gubreev, “Spectral analysis of biorthogonal expansions of functions, and exponential series”, Izv. Akad. Nauk SSSR Ser. Mat., 53:6 (1989), 1236–1268; Math. USSR-Izv., 35:3 (1990), 573–605
G. M. Gubreev, “Basis property of families of Mittag-Leffler-type functions, the dzhrbashyan transformations, and the muckenhoupt condition”, Funktsional. Anal. i Prilozhen., 21:4 (1987), 71–72; Funct. Anal. Appl., 21:4 (1987), 317–319
G. M. Gubreev, “A theorem on uniform correctness of a Cauchy problem and its application”, Funktsional. Anal. i Prilozhen., 18:2 (1984), 89–91; Funct. Anal. Appl., 18:2 (1984), 163–165
G. M. Gubreev, A. I. Kovalenko, “Tests for completeness of root subspaces of a differentiation operator with abstract boundary conditions”, Mat. Zametki, 30:4 (1981), 543–552; Math. Notes, 30:4 (1981), 765–770
G. M. Gubreev, A. I. Kovalenko, “On a criterion for the equality $D_A=D_{A^*}$ for dissipative operators”, Dokl. Akad. Nauk SSSR, 254:5 (1980), 1044–1047