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      • Institute for Armenian Studies
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      • Research Institute of Biology
      • Research Institute of Physics
      • Research Center for the Institute of Pharmacy
    • Scientific and Educational Centers
      • Observatory
      • Scientific and Educational Center for Control and Monitoring of the Quality of Medicines
      • Specialized cabinet-laboratory for the Design of Very Large Integrated Circuits (Synopsis)
      • Legal Clinic
      • Center for Applied Psychology
      • Research Center-Library of Greek Studies
      • Innovation Center for Microbial Biotechnology and Biofuels
      • Russian Center
      • Center for Russian Studies
      • Distance Learning Laboratory of Sociology
    • Column Wrapper
      • Banner
    • Administrative Divisions of YSU
      • Academic Secretary
      • Center for Doctoral Education
      • General Division
      • YSU History Museum
      • Department of Energy System Operation
      • Financial Analysis Department
      • Human Resources Department
      • Center for Admissions and Affairs with Applicants
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      • Byurakan Industrial Practice Base
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      • Tsaghkadzor training and production base
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      • Accounting Department
      • Center for Quality Assurance
      • Department for Special Affairs
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      • Student Dormitory
      • Educational-Methodological Department
      • Marie and Sarkis Izmirlian Library
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  1. Main
  2. Employees
  3. Karen Aleksander Keryan
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karenkeryan@ysu.am
Karen
Aleksander
Keryan
Faculty of Mathematics and Mechanics
Chair of Theory of Functions and Differential Equations
Assistant

Personal information

Date of birth
1984
Education
Institution
Yerevan State University
Faculty
Faculty of Mathematics and Mechanics
Date
2007 - 2009
Degree name
PhD student
Institution
Yerevan State University
Faculty
Faculty of Mathematics and Mechanics
Date
2005 - 2007
Degree name
Masters
Institution
Yerevan State University
Faculty
Faculty of Mathematics and Mechanics
Date
2001 - 2005
Degree name
Bachelor
Scientific Rank/degree
Institution
Yerevan State University
Date
2018
Degree name
Doctor
Specialty
Physico-mathematical sciences
Research Topic
Convergence, uniqueness and basis problems for orthonormal spline systems
Institution
Yerevan State University
Date
2009
Degree name
Candidate
Specialty
Physico-mathematical sciences
Scientific Supervisor
Gevorkyan Gegham
Research Topic
Questions of basisness of general periodic Franklin system
Work experience
Institution
Supreme Certifying Committee
Period of time
2021 - 2023
Rank/degree
Chairman
Institution
American University of Armenia
Period of time
2015 - 2022
Rank/degree
Adjunct lecturer
Institution
Yerevan State University
Period of time
2008 till now
Rank/degree
Assistant professor
State awards and honorary titles
2018
RA Presidential Award

Publications

- Կատեգորիա -
Article
Unconditionality of Periodic Orthonormal Spline Systems in : Sufficiency
K. Keryan
L. Hakobyan
Journal of Contemporary Mathematical Analysis (Armenian Academy of Sciences)
2024
163-186
Article
A uniqueness theorem for orthonormal spline series
K. Keryan
A. Khachatryan
Acta Mathematica Hungarica
2024
20-48
Article
Periodic orthonormal spline systems with arbitrary knots as bases in H1(T)
K. Keryan
L. Hakobyan
Journal of Contemporary Mathematical Analysis (Armenian Academy of Sciences)
2023
33-42
Article
A uniqueness theorem for orthonormal spline series
K. A. Keryan
A. L. Khachatryan
Reports of NAS RA
2023
7-11
Article
A Uniqueness theorem for Franklin series
K. Keryan
A. Khachatryan
Известия НАН РА. Математика (Journal of Contemporary Mathematical Analysis (Armenian Academy of Sciences))
2020
43-56
Article
CONVERGENCE TO INFINITY FOR ORTHONORMAL SPLINE SERIES
G. G. GEVORKYAN
K. A. KERYAN
M. P. POGHOSYAN
Acta Mathematica Hungarica
2020
604-617
Article
Unconditionality of periodic orthonormal spline systems in Lp
K. Keryan
M. Passenbrunner
Studia Mathematica
2019
57-91
Article
Reconstruction of martingales and applications to multiple Haar series.
Karen Keryan
Mamikon Ginovyan
Studia Scientiarum Mathematicarum Hungarica
2018
542–558.
Article
О локальной эквивалентности мажоранты частичных сумм и функции Пэли для рядов Франклина
Геворкян Г.Г.
Керян К.А.
Известия НАН РА. Математика (Journal of Contemporary Mathematical Analysis (Armenian Academy of Sciences))
2017
47-58
http://jmath.sci.am/index.php/rus
Article
An example of double Fourier-Haar series with a nonregular subseries
K.A. Keryan
Proceedings of the YSU A. Physical and Mathematical Sciences
2017
18-21
http://www.ysu.am/science/en/journals
Article
O базисности в H^1(R) ортонормальных систем сплайнов на R с нулевыми средними
К.А. Керян
Доклады НАН РА
2017
14-20
http://www.flib.sci.am/eng/Reports/Frame.html
Article
Теорема единственности для рядов Франклина
К.А. Керян
Известия НАН РА. Математика (Journal of Contemporary Mathematical Analysis (Armenian Academy of Sciences))
2017
26-38
http://jmath.sci.am/index.php/rus
Article
Uniqueness theorem for sequences of piecewise polynomial functions
K.A. Keryan
Armenian Journal of Mathematics
2017
28-34
http://www.flib.sci.am/eng/journal/Math/
Article
On recovery of a Franklin series from its sum
K.A. Keryan
Proceedings of the YSU A. Physical and Mathematical Sciences
2017
151-157
Article
Orthonormal spline systems on R with zero means as bases in H^1(R)
K. Keryan
Analysis Mathematica
2017
581-601
Article
Об одной системе кусочно линейных функций с нулевыми интегралами
Геворкян Г.Г.
Керян К.А.
Известия НАН РА. Математика (Journal of Contemporary Mathematical Analysis (Armenian Academy of Sciences))
2016
3-16
http://jmath.sci.am/index.php/rus
Article
О безусловной базисности в H^1(R) системы функций Франклина с нулевыми средними
К.А. Керян
Известия НАН РА. Математика (Journal of Contemporary Mathematical Analysis (Armenian Academy of Sciences))
2016
43-71
http://jmath.sci.am/index.php/rus
Article
Теорема единственности для кратных рядов Чисельского
К.А. Керян
Доклады НАН РА
2016
263-270
http://www.flib.sci.am/eng/Reports/Frame.html
Article
Общая периодическая система Франклина как базис в пространстве B^1(T) .
К.А. Керян
Доклады НАН РА
2015
178-184
http://www.flib.sci.am/eng/Reports/Frame.html
Article
Unconditionality of orthogonal spline systems in
G. Gevorkyan
A. Kamont
K. Keryan
M.Passenbrunner
Studia Mathematica
2015
123-154
https://www.impan.pl/en/publishing-house/journals-and-series/studia-mathematica

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