Associate Professor
with Aggregation
e-mail: syakubov@fc.up.pt
Academic Degrees:
Professional Experience and Education:
04.2002-Present,Associate Professor
with Aggregation of
the University of Porto,Portugal
10.2001-04.2002 Associate Professor
of the University of Porto
02.2000-10.2001 Visiting Associate
Professor of the University of Porto
01.1999-02.2000 MS Access and Oracle
Database Programmer at Systemhouse of
the Eindhoven University of
Technology, the Netherlands
01.1998-01.1999 Post-Doc at the
Eindhoven University of Technology
01.1997-12.1997 Visiting Research
Fellow under the Askey-Bateman Project
Katholieke
Universiteit Leuven, Belgium
03.1995-01.1997 Leading Researcher,
Belarusian State University (BSU),
Minsk, Belarus
03.1994-03.1995 Associate Professor
(Research Fellow) University
of Fukuoka, Japan
11.1992-03.1994 Leading Researcher,
BSU
01.1990-11.1992 Senior Researcher,
BSU
09.1988-01.1990 Scientific
Researcher, BSU
12.1987-08.1988 Database Programmer
at Minsk’s Research Institute
11.1984-10.1987 Ph.D. Mathematics,
BSU
09.1978-08.1984 Ms. Sc. Mathematics,
BSU
09.1976-06.1978 Student of
Kolmogorov’s special school N 18 for
young mathematicians at the Moscow
University
Highlights:
Long Term Visiting Professorship :
Free University of Berlin (Germany): November
1991, December
1992, December 1993;
Gunma, Nara, Kyoto Universities (Japan), 1994;
DAAD Scholarship:
Jena University (Germany): July-August 1996.
Participation in the Projects :
Orthogonal Polynomials and Special
Functions (the Socrates programme):
the project involving researches from
several
european universities; since 2001;
List of Publications includes more than
200 items. Some of the papers published recently are the following:
R. Sousa, M. Guerra, S. Yakubovich,
Product formulas and convolutions for Laplace–Beltrami
operators on product spaces: beyond the trivial case.
Math. Ann. 387 (2023), no. 1-2, 879–926.
S. Yakubovich, Upper bounds and asymptotic expansion for Macdonald's function and the summability of the Kontorovich-Lebedev
integrals, Integral Transforms and Special Functions, 34 (2023), N
10, 721-736.
H. Alzer, S. Yakubovich, Identities for combinatorial sums
involving trigonometric functions,
Integral Transforms and Special Functions, 34 (2023), N
8, 563-569.
S. Yakubovich,
Discrete orthogonal polynomials associated with
Macdonald functions.
The Ramanujan Journal, 2022,
59, 1147-1170.
S. Yakubovich, On the theory of orthogonal
polynomials for the weight xν
exp (−x − t/x). II, Integral Transforms and
Special Functions, 33
(2022), N 11, 846-866.
S. Yakubovich, On the theory of orthogonal
polynomials for the weight xν
exp (−x − t/x). I, Integral Transforms and
Special Functions, 33
(2022), N 9, 735-746.
S. Yakubovich, Discrete index transforms with Bessel and
modified Bessel functions. Analysis
(Berlin) 42 (2022), no. 3, 149–157.
S. Yakubovich, A
modification of the Prudnikov and Laguerre
polynomials, Integral Transforms and Special Functions, 33 (2022), N
8, 668-681.
S. Yakubovich, Discrete Fourier-Jacobi transform, Integral Transforms and
Special Functions, 33
(2022), N 3, 191-198.
S. Yakubovich, Discrete index transformations with squares
of Bessel functions, Integral Transforms and Special Functions, .33 (2022), N
2, 141-156.
S. Yakubovich, Discrete index transformations with Bessel
and Lommel functions. J.
Anal. 29 (2021), no. 4, 1421–1441.
S. Yakubovich, Discrete Lebedev-Skalskaya transforms,
Integral Transforms and Special Functions, .32 (2021), N
11, 883-892.
S.Yakubovich, Discrete index Whittaker transforms. Results Math. 76 (2021), no. 2, Paper No. 106, 10 pp.
S. Yakubovich,
Discrete Lebedev’s index transforms. Rendiconti del Circolo Matematico di Palermo Series,
2021 70, N 2, 1647–1656.
S. Yakubovich,
Discrete Kontorovich-Lebedev transforms. The Ramanujan Journal, 2021, 55, 517-538.
S. Yakubovich, On the orthogonality
and convolution orthogonality via the Kontorovich-Lebedev
transform. J. Comput.
Appl. Math. 384 (2021), 113178,
17 pp.
S. Yakubovich,
A method of composition orthogonality and new sequences of
orthogonal polynomials and functions for non-classical weights.
J. Math. Anal. Appl. 499 (2021), no. 2, 25pp.
. Anal. 14 (2013), No. 1,
pp. 28-41.