Research/art/teacher profile of a person
Name and surname:
prof. RNDr. Róbert Jajcay, DrSc.
Document type:
Research/art/teacher profile of a person
The name of the university:
Comenius University Bratislava
The seat of the university:
Šafárikovo námestie 6, 818 06 Bratislava

I. - Basic information

I.1 - Surname
Jajcay
I.2 - Name
Robert
I.3 - Degrees
prof., RNDr., PhD., DrSc.
I.4 - Year of birth
1964
I.5 - Name of the workplace
Department of Algebra and Geometry, Faculty of Mathematics, Physics and Informatics, Comenius University, Bratislava
I.6 - Address of the workplace
Department of Algebra and Geometry, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská dolina F1, 84248 Bratislava
I.7 - Position
Professor
I.8 - E-mail address
robert.jajcay@fmph.uniba.sk
I.9 - Hyperlink to the entry of a person in the Register of university staff
https://www.portalvs.sk/regzam/detail/11666
I.10 - Name of the study field in which a person works at the university
Mathematics
I.11 - ORCID iD
0000-0002-2166-2092

II. - Higher education and further qualification growth

II.1 - First degree of higher education
II.2 - Second degree of higher education
II.a - Name of the university or institution
Matematicko-fyzikálna fakulta Univerzity Komenského
II.b - Year
1988
II.c - Study field and programme
Mathematics/Operational Research and Control Theory
II.3 - Third degree of higher education
II.a - Name of the university or institution
University of Nebraska-Lincoln, Nebraska
II.b - Year
1995
II.c - Study field and programme
Mathematics
II.4 - Associate professor
II.a - Name of the university or institution
Comenius University, Bratislava, Slovakia
II.b - Year
2012
II.c - Study field and programme
Mathematics
II.5 - Professor
II.a - Name of the university or institution
Comenius University, Bratislava, Slovakia
II.b - Year
2022
II.c - Study field and programme
Mathematics
II.6 - Doctor of Science (DrSc.)
II.a - Name of the university or institution
Pavol Jozef Safarik University, Kosice, Slovakia
II.b - Year
2019
II.c - Study field and programme
Discrete Mathematics

III. - Current and previous employment

III.a - Occupation-position III.b - Institution III.c - Duration
Professor Comenius University, Bratislava, Slovakia 2016 -
Associate Dean Comenius University, Bratislava, Slovakia 2016 -
Associate Professor Comenius University, Bratislava, Slovakia 2012 - 2016
Professor Indiana State University, Terre Haute, Indiana, U.S.A. 2006 - 2012
Associate Professor Indiana State University, Terre Haute, Indiana, U.S.A. 2002 - 2006

IV. - Development of pedagogical, professional, language, digital and other skills

V. - Overview of activities within the teaching career at the university

V.1 - Overview of the profile courses taught in the current academic year according to study programmes
V.1.a - Name of the profile course V.1.b - Study programme V.1.c - Degree V.1.d - Field of study
Linear Algebra and Geometry Managerial Mathematics I. Mathematics
Introduction to Coding Theory Mathematics I. Mathematics
Linear Coding Theory Mathematics II. Mathematics
Selected Topiss in Cryptography Mathematics II. Mathematics
Linear Algebra Data Science I. Mathematics/Informatics
Applications of Group Theory in Discrete Mathematics Mathematics II. Mathematics
Graph Theory Mathematics I. Mathematics
Combinatorics Mathematics I. Mathematics
Algebraic Graph Theory Mathematics III. Mathematics
Seclected Topics in Group Theory Mathematics III. Mathematics
V.2 - Overview of the responsibility for the delivery, development and quality assurance of the study programme or its part at the university in the current academic year
V.2.a - Name of the study programme V.2.b - Degree V.2.c - Field of study
Mathematics I. Mathematics
Mathematics II. Mathematics
Mathematics III. Mathematics
V.3 - Overview of the responsibility for the development and quality of the field of habilitation procedure and inaugural procedure in the current academic year
V.3.a - Name of the field of habilitation procedure and inaugural procedure V.3.b - Study field to which it is assigned
Mathematics Mathematics
V.4 - Overview of supervised final theses
V.4.1 - Number of currently supervised theses
V.4.a - Bachelor's (first degree)
1
V.4.b - Diploma (second degree)
1
V.4.c - Dissertation (third degree)
3
V.4.2 - Number of defended theses
V.4.a - Bachelor's (first degree)
13
V.4.b - Diploma (second degree)
12
V.4.c - Dissertation (third degree)
3
V.5 - Overview of other courses taught in the current academic year according to study programmes
V.5.a - Name of the course V.5.b - Study programme V.5.c - Degree V.5.d - Field of study
Linear Algebra and Geometry Managerial Mathematics I. Mathematics
Introduction to Coding Theory Mathematics I. Mathematics
Linear Coding Theory Mathematics II. Mathematics
Selected Topics in Cryptography Mathematics II. Mathematics
Linear Algebra Data Science I. Mathematics/Informatics
Discrete Mathematics I Mathematics I. Mathamatics
Discrete Mathematics II Mathematics I. Mathematics

VI. - Overview of the research/artistic/other outputs

VI.1 - Overview of the research/artistic/other outputs and the corresponding citations
VI.1.1 - Number of the research/artistic/other outputs
VI.1.a - Overall
131
VI.1.b - Over the last six years
60
VI.1.2 - Number of the research/artistic/other outputs registered in the Web of Science or Scopus databases
VI.1.a - Overall
68
VI.1.b - Over the last six years
34
VI.1.3 - Number of citations corresponding to the research/artistic/other outputs
VI.1.a - Overall
611
VI.1.b - Over the last six years
347
VI.1.4 - Number of citations registered in the Web of Science or Scopus databases
VI.1.a - Overall
611
VI.1.b - Over the last six years
347
VI.1.5 - Number of invited lectures at the international, national level
VI.1.a - Overall
48
VI.1.b - Over the last six years
12
VI.2 - The most significant research/artistic/other outputs
1

G. Exoo, R. Jajcay, Dynamic cage survey, Electr. J. of Combinatorics, Dynamic Survey 16, Sept. 2008.

2

G. Exoo, R. Jajcay, J. Siran, Cayley cages, J. Algebr. Comb. 38 (1), 2013, .209 - 224

3

M. Conder, R. Jajcay and T. Tucker, Cyclic complements and skew morphisms of groups, Journal of Algebra, 2016, 453, pp. 68–100.

4

R.B. Richter, R. Jajcay, J. Siran, T, Tucker and M. Watkins, Cayley maps, J. of Comb. Theory B, 95 (2), 2005, 189 - 245.

5

R. Jajcay and J. Siran, Skew-morphisms of regular Cayley maps, Discrete Math 244, 2002, 167 - 179.


VI.3 - The most significant research/artistic/other outputs over the last six years
1

E. Eiben, R. Jajcay and P. Sparl, Symmetry properties of generalized graph truncations, J. of Comb. Theory B, 137, 2019, 291 - 315.


2

R. Jajcay and G.A. Jones, r-regular families of graph automorphisms, Europ. J. Comb 79, 2019, 97 - 110.


3
On the Cayleyness of Praeger-Xu graphs, Jajcay, R., Potočnik, P., Wilson, S.Journal of Combinatorial Theory. Series B, 2022, 152, pp. 55–79
4

S. Filipovski and R. Jajcay, On the non-existence of families of (d,k,delta)-digraphs containing only self-repeat vertices, Lin. Algebra and Applications 563, 2019, 302 - 312.


5

G. Exoo, R. Jajcay. M. Macaj and J. Siran, On the defect of vertex-transitive graphs of given degree and diameter, J. Comb. Theory B, 134, 2019, 322 - 340.


VI.4 - The most significant citations corresponding to the research/artistic/other outputs
1

G. Exoo, R. Jajcay, Dynamic cage survey:2018 Miller, M.: Moore graphs and beyond: A survey of the degree/diameter problem. In: Electronic Journal of Combinatorics, Vol. 1, No. DynamicSurveys, 2018, Art. No. DS14v2 - SCOPUS


2

R.B. Richter, R. Jajcay, J. Siran, T, Tucker and M. Watkins, Cayley maps: 2002 Li, C. H.: On isomorphisms of finite Cayley graphs - A survey. In: Discrete Mathematics, Vol. 256, No. 1-2, 2002, s. 301-334 - SCOPUS.


3

R. Jajcay and J. Siran, Skew-morphisms of regular Cayley maps:2008 Jones, G. A.: Complete bipartite maps, factorisable groups and generalised Fermat curves. In: Applications of Group Theory to Combinatorics. Boca Raton : CRC Press, 2008, s. 43-58 - CPCI-S


4

G.A. Jones and R. Jajcay, Cayley properties of merged Johnson graphs: 2019 Mirafzal, S. M.: The automorphism group of the bipartite Kneser graph. In: Proceedings of the Indian Academy of Sciences: Mathematical Sciences, Vol. 129, No. 3, 2019, Art. No. 34 - SCOPUS


5

E. Eiben, R. Jajcay and P. Sparl, Symmetry properties of generalized graph truncations: .2020 Wang, X. - Yin, F. G. - Zhou, J. X.: On generalized truncations of complete graphs. In: Ars Mathematica Contemporanea, Vol. 19, No. 2, 2020, s. 325-335 - SCOPUS


VI.5 - Participation in conducting (leading) the most important research projects or art projects over the last six years
1

Applications of algebraic and computational methods in solving classical problems of extremal combinatorics, 2017 - 2019, VEGA 1/0596/17, leader


2

Algebraic, topological and combinatorial methods in discrete structures, 2020 - 2023, APVV-15-0220, second leader


3

Combinatorial structures with prescribed symmetries, 2020 - 2022, VEGA 1/0423/20, leader

4

Exceptional structures in Discrete Mathematics: Properties, constructions and classifications, 

APVV-23-0076, 2024-2028, leader

5

Constructions of expanders and extremal graphs, 

SK-AT-23-0019 , 2024-2026, leader

VII. - Overview of organizational experience related to higher education and research/artistic/other activities

VII.a - Activity, position VII.b - Name of the institution, board VII.c - Duration
Member of editorial board, Ars Mathematica Contemporanea since 2017
Member of editorial board, Acta Mathematicae Universitatis Comeniana since 2019
Organizer of international conferences, EUROCOMB 2019, IWONT 2014, MIGHTY LII 2019, 2014, 2012
Leader or member of grant team VEGA a APVV repeatedly
member of a Team of Excellence since 2016

VIII. - Overview of international mobilities and visits oriented on education and research/artistic/other activities in the given field of study

VIII.a - Name of the institution VIII.b - Address of the institution VIII.c - Duration (indicate the duration of stay) VIII.d - Mobility scheme, employment contract, other (describe)
Indiana State University Terre Haute, IN, U.S.A. 1995 - 2012 employee
Yan Tai University Yan Tai, China 2011, 2014, 2018 research cooperation
University of Southampton Southampton, Great Britain Sept. - Oct. 2016 research cooperation
University of Auckland Auckland, New Zealand May - June 2077 research cooperation
Pohang National University Pohang, South Korea January - February 2007 research cooperation
Yokohama National University Yokohama, Japan June - August 2004 research cooperation

IX. - Other relevant facts

IX.a - If relevant, other activities related to higher education or research/artistic/other activities are mentioned

Associate dean for doctoral studies, Faculty of Mathematics, Physics and Informatics, UK, Bratislava, 2016 -


Date of last update
2024-12-01