Assoc. Prof. Dr.
Roghayeh HAFEZIEH
Mathematics
- Phone
- +90 (262) 605 13 84
- roghayeh@gtu.edu.tr
- Office
- Business Administration Building, 52
- Areas of interest
- Finite Group Theory, Algebraic Graph Theory, Mathematical Chemistry.
- S.M.Robati, R. Hafezieh, "Prime graphs on the set of vanishing class sizes", to appear in Ricerche di Matematica.
- F. Altunbulak Aksu, R. Hafezieh, İ. Tuvay, “Involutary permutation automorphisms of binary linear codes”, J. of Algebra an its Applications.https://doi.org/10.1142/S0219498825501373
- R. Hafezieh, Gülsemin Çonoğlu, 'Non-solvable groups whose all vanishing class sizes are odd-square-free', to appear in Advances in Group Theory and Applications,(Volume 19)2024.
- S.M. Robati, R. Hafezieh, 'Groups whose vanishing class sizes are p-powers', Communications in Algebra, 2023, 2978-2982.
- S.M. Robati, R. Hafezieh, 'Nonsolvable groups all of whose indices are odd-square-free', Turkish journal of mathematics, 46(3) 2022, 746-752.
- S.M. Robati, R. Hafezieh,‘ Groups whose vanishing class sizes are of prime powers’;Journal of Group Theory, 25(1) 2022, 151-162.
- R. Hafezieh, M.A. Hosseinzadeh, S. Hossein-Zadeh, A. Iranmanesh, "On cut vertices and eigenvalues of character graphs of solvable groups";Discrete Applied Mathematics, (303) 2021, 86-93.
- R. Hafezieh and P. Spiga, "An overview on the bipartite divisor graph for the set of irreducible character degrees", Rocky Mountain Journal of Mathematics, (6) 2020, 2073-2095.
- R. Hafezieh, "On regular bipartite divisor graph for the set of irreducible character degrees", Hact. J. Math. Stat., 48(6) 2019, 1620-1625.
- R. Hafezieh, "On nonsolvable groups whose prime degree graphs have four vertices and one triangle", Proceedings of Ischia Group Theory; International journal of group theory, (7) 2018, 1-6.
- R. Hafezieh, "Bipartite divisor graph for the set of irreducible character degrees", International journal of group theory, (6) 2017, 41-51.
- R. Hafezieh and P. Spiga, ''Groups having complete bipartite divisor graphs for their conjugacy class sizes'', Rend. Sem. Mat. Univ. Padova, (133) 2015, 117-123.
- R. Hafezieh and M. A. Iranmanesh, “Bipartite divisor graph for the product of subsets of integers”, Bulletin of Australian Mathematical Society, (87) 2013, 288-297.
- R. Hafezieh and M. A. Iranmanesh, “On some results on IP-graphs”, Turkish journal of Mathematics, (37) 2013, 560-570.
- M. A. Iranmanesh and R. Hafezieh, “The Eccentric Connectivity Index of Some Special Graphs”, Iranian Journal of Mathematical Chemistry, (2) 2011, 61-65.
- ÖZLEM KAMBERI, “On zero-divisor graph, ideal-based zero divisor graph and weakly zero divisor graph of commutative rings”, 2024
- GÜLSEMİN ÇONOĞLU, “On complex irreducible characters of finite groups and their zeros”, 2021
- NURSEMIN FERATLAR, ''On Normalized Laplacian Spectrum of Some Special Graphs", 2018.
- NOUR ALNAJJARINE, "On Character Degrees of Finite Groups and Some Associated Graphs", 2018.
- SERKAN DORU,"On Cycles and Bipartite Divisor Graph Related to the Set of Conjugacy Class Sizes",2015.
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Third Cycle (Doctoral): Ph.D. of Pure Mathematics, Algebra:
Yazd University, Yazd, Iran, Sep. 2008- Sep. 2012. -
Second Cycle (Master's): M.Sc. of Pure Mathematics, Algebra:
Tarbiat Moallem University, Tehran, Iran, Sep. 2006 – Sep. 2008. -
First Cycle (Undergraduate): B.Sc. of Pure Mathematics:
Vali-e-Asr University, Rafsanjan, Kerman, Iran, Sep. 2002- Sep. 2006.
Visiting Researcher: Bilkent University, Ankara, Turkey, Feb. 2012 – Feb. 2013.
Projects:
1. A. Iranmanesh was supported by TÜBİTAK, project number 2221 - (1059B211600939) , 27.08.2017-15.09.2017.
2. S. M. Robati was supported by Tubitakk 2221-(1059B212300408), 29.08.2023-12.09.2023
3. BAP: 2023-A-101-16, (02.10 2023-02.10.2024) with Özlem Kamberi
Projects:
1. A. Iranmanesh was supported by TÜBİTAK, project number 2221 - (1059B211600939) , 27.08.2017-15.09.2017.
2. S. M. Robati was supported by Tubitakk 2221-(1059B212300408), 29.08.2023-12.09.2023
3. BAP: 2023-A-101-16, (02.10 2023-02.10.2024) with Özlem Kamberi