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personal data approved: 2018. IX. 28.
Personal data
name Zoltán Sebestyén
name of institution
doctoral school
ELTE Doctoral School of Mathematics (Core member emeritus)
Council of the Doctoral School
SzTE 
Természet- és Műszaki Tudományi Doktori Tanács (external member)
the share of work in the different doctoral schools. ELTE Doctoral School of Mathematics 99%
ELTE DSM Council of the Doctoral School 1%
accreditation statement submitted to: Eötvös Loránd University, Budapest
Contact details
E-mail address sebestycs.elte.hu
phone number +363214108
Academic title
scientific degree, title Ph.D.
year degree was obtained 1984
discipline to which degree belongs mathematics and computing
institution granting the degree HAS
scientific degree, title DSc
year degree was obtained 1984
discipline to which degree belongs
institution granting the degree HAS
Employment
1967 - Eötvös Loránd University, Budapest
professor emeritus
Thesis topic supervisor
number of doctoral students supervised until now 7
number of students who fulfilled course requirements 7
students who obtained their degrees:
Tamás Titkos PhD 2016  DSM
Zsigmond Tarcsay PhD 2013  DSM
(50%) Máté Matolcsi PhD 2003  DSM
Vilmos Prokaj PhD 1996  
Zoltán Magyar Candidate of sciences 1987  
Dénes Petz Candidate of sciences 1982  

completed course requirement, without degree or degree granting in process:
Balázs Takács (PhD) 2017/08  DSM
  Thesis topic proposals
Research
research area Functional analysis, operator theory, C*-algebras, moment problems, operator inequalities, theory of positive forms, operator extensions
research field in which current research is conducted mathematics and computing
Publications
2015

Sebestyén Z, Szucs Z, Tarcsay Z: Extensions of positive operators and functionals, LINEAR ALGEBRA AND ITS APPLICATIONS 472: pp. 54-80.
type of document: Journal paper/Article
language: English
DOI 
2015

Sebestyén Z, Tarcsay Z: Characterizations of essentially self-adjoint and skew-adjoint operators, STUDIA SCIENTIARUM MATHEMATICARUM HUNGARICA 52: (3) pp. 371-385.
type of document: Journal paper/Article
language: English
DOI 
2015

Titkos T, Sebestyén Z, Tarcsay Z: A short-type decomposition of forms, OPERATORS AND MATRICES 9: (4) pp. 815-830.
type of document: Journal paper/Article
number of independent citations: 1
language: English
URL 
2014

Sebestyén Z, Tarcsay Z: A reversed von Neumann theorem, ACTA SCIENTIARUM MATHEMATICARUM - SZEGED 80: (3-4) pp. 659-664.
type of document: Journal paper/Article
number of independent citations: 2
language: English
DOI 
2013

Popovici D, Sebestyen Z: Factorizations of linear relations, ADVANCES IN MATHEMATICS 233: (1) pp. 40-55.
type of document: Journal paper/Article
number of independent citations: 1
language: English
DOI 
2009

Hassi S, Sebestyen Z, de Snoo H: Lebesgue type decompositions for nonnegative forms, JOURNAL OF FUNCTIONAL ANALYSIS 257: (12) pp. 3858-3894.
type of document: Journal paper/Article
number of independent citations: 18
language: English
DOI 
2007

Hassi S, Sebestyén Z, De Snoo HSV, Szafraniec FH: A canonical decomposition for linear operators and linear relations, ACTA MATHEMATICA HUNGARICA 115: (4) pp. 281-307.
type of document: Journal paper/Article
number of independent citations: 11
language: English
DOI 
2005

Hassi S, Sebestyén Z, De Snoo HSV: On the nonnegativity of operator products, ACTA MATHEMATICA HUNGARICA 109: (1-2) pp. 1-14.
type of document: Journal paper/Article
number of independent citations: 9
language: English
DOI 
1996

Prokaj Vilmos, Sebestyén Zoltán: On Friedrichs extensions of operators, ACTA SCIENTIARUM MATHEMATICARUM - SZEGED 62: (1-2) pp. 243-246.
type of document: Journal paper/Article
number of independent citations: 16
language: English
1996

Prokaj Vilmos, Sebestyén Zoltán: On extremal positive operator extensions, ACTA SCIENTIARUM MATHEMATICARUM - SZEGED 62: (3-4) pp. 485-491.
type of document: Journal paper/Article
number of independent citations: 14
language: English
Number of independent citations to these publications:72 
Scientometric data
list of publications and citations
number of scientific publications that meet accreditation criteria:
88
number of scientific publications:
88
monographs and professional books:
0
monographs/books in which chapters/sections were contributed:
1 
scientific publications published abroad that meet the accreditation criteria:
23
publications not in Hungarian, published in Hungary, meeting the accreditation criteria:
64
number of independent citations to scientific publications and creative works:
306

 
All rights reserved © 2007, Hungarian Doctoral Council. Doctoral Council registration number at commissioner for data protection: 02003/0001. Program version: 2.2358 ( 2017. X. 31. )