Faculty Profile

منو
حسین حاجی ابوالحسن

استاد

تاریخ به‌روزرسانی: 1403/02/27

حسین حاجی ابوالحسن

علوم ریاضی / ریاضی کاربردی و صنعتی

Articles Faculty

مقالات علمی چاپ شده در مجلات

  1. "On the Chromatic Number of Matching Kneser Graphs"
    Meysam Alishahi, Hossein Hajiabolhassan
    COMBINATORICS PROBABILITY and COMPUTING, Vol. 29, pp.1-21, 2020
  2. "On chromatic number and minimum cut"
    Meysam Alishahi, Hossein Hajiabolhassan
    JOURNAL OF COMBINATORIAL THEORY SERIES B, Vol. 139, pp.29-46, 2019
  3. "Chromatic number of random Kneser hypergraphs"
    Meysam Alishahi, Hossein Hajiabolhassan
    JOURNAL OF COMBINATORIAL THEORY SERIES A, Vol. 154, pp.1-20, 2018
  4. "A generalization of Gales lemma"
    Meysam Alishahi, Hossein Hajiabolhassan
    JOURNAL OF GRAPH THEORY, Vol. 88, pp.337-346, 2018
  5. "Chromatic number via Turan number"
    Meysam Alishahi, Hossein Hajiabolhassan
    DISCRETE MATHEMATICS, Vol. 340, pp.2366-2377, 2017
  6. "Strengthening topological colorful results for graphs"
    Meysam Alishahi, Hossein Hajiabolhassan, Frédéric Meunier
    EUROPEAN JOURNAL OF COMBINATORICS, Vol. 64, pp.27-44, 2017
  7. "Hedetniemi s conjecture for Kneser hypergraphs"
    Hossein Hajiabolhassan, Frédéric Meunier
    JOURNAL OF COMBINATORIAL THEORY SERIES A, Vol. 143, pp.42-55, 2016
  8. "On the chromatic number of general Kneser hypergraphs"
    Meysam Alishahi, Hossein Hajiabolhassan
    JOURNAL OF COMBINATORIAL THEORY SERIES B, Vol. 115, pp.186-209, 2015
  9. "On the Circular Chromatic Number of Graph Powers"
    Hossein Hajiabolhassan
    JOURNAL OF GRAPH THEORY, Vol. 75, pp.48-58, 2014
  10. "some new bounds for cover- free families through bicliqe covers"
    Hossein Hajiabolhassan,
    DISCRETE MATHEMATICS, Vol. 312, pp.3626-3635, 2012
  11. "Secure Frameproof Codes Through Biclique Covers"
    Hossein Hajiabolhassan, Farokh lagha Moazami Goodarzi
    DISCRETE MATHEMATICS AND THEORETICAL COMPUTER SCIENCE, Vol. 14, pp.261-270, 2012
  12. "Secure Frameproof Code Through Biclique Cover"
    Hossein Hajiabolhassan,
    DISCRETE MATHEMATICS AND THEORETICAL COMPUTER SCIENCE, Vol. 14, pp.261-270, 2012
  13. "A generalization of Kneser s conjecture"
    Hossein Hajiabolhassan
    DISCRETE MATHEMATICS, Vol. 311, pp.2663-2668, 2011
  14. "on the complexty of unique list of colourability and the fixing number of graphs"
    Hossein Hajiabolhassan,
    ARS COMBINATORIA, Vol. 97, pp.301-319, 2010
  15. "On the isoperimetric spectrum of graphs and its approximations"
    , Hossein Hajiabolhassan,
    JOURNAL OF COMBINATORIAL THEORY SERIES B, Vol. 100, pp.390-412, 2010
  16. "graph powers and graph homomorphisms"
    Hossein Hajiabolhassan,
    ELECTRONIC JOURNAL OF COMBINATORICS, Vol. 17, 2010
  17. "on colorings of graph powers"
    Hossein Hajiabolhassan
    DISCRETE MATHEMATICS, Vol. 309, pp.4299-4305, 2009
  18. "on connected colourings of graphs"
    , Hossein Hajiabolhassan, navid hamedazimi
    ARS COMBINATORIA, Vol. 89, 2009
  19. "bounds for visual cryptography schemes"
    Hossein Hajiabolhassan,
    DISCRETE APPLIED MATHEMATICS, Vol. 158, pp.659-665, 2009
  20. "on the b- chromatic number of kneser graphs"
    Hossein Hajiabolhassan
    DISCRETE APPLIED MATHEMATICS, Vol. 158, pp.232-234, 2009
  21. "a generalization of the erdos -ko- rado theorem"
    , Hossein Hajiabolhassan,
    DISCRETE MATHEMATICS, Vol. 310, pp.188-191, 2009
  22. "On conected colourings of graphs"
    , Hossein Hajiabolhassan,
    ARS COMBINATORIA, Vol. 89, pp.1-10, 2008
  23. "Density and power graphs in graph homomorphism problem"
    , Hossein Hajiabolhassan
    DISCRETE MATHEMATICS, Vol. 308, pp.4027-4030, 2008
  24. "Circular colouring and algebraic no-homomorphism theorem"
    Hossein Hajiabolhassan, A Daneshgar
    EUROPEAN JOURNAL OF COMBINATORICS, 2007
  25. "On Defining numbers and circular colouring of graphs"
    Hossein Hajiabolhassan, A Daneshgar, N Soltankhah
    DISCRETE MATHEMATICS, pp.173-180, 2007
  26. "Graph homomorphisms and nodal domains"
    Hossein Hajiabolhassan, A Daneshgar
    LINEAR ALGEBRA AND ITS APPLICATIONS, 2006
  27. "Tabular graphs and chromatic Sum"
    Hossein Hajiabolhassan, M.L Mehrabadi, R Tusserkani
    DISCRETE MATHEMATICS, Vol. 304, pp.11-22, 2005
  28. "Unique list-colorability and the fixing chromatic number of graphs"
    Hossein Hajiabolhassan, A Daneshgar
    DISCRETE APPLIED MATHEMATICS, Vol. 152, pp.123-138, 2005
  29. "Random walks and graph homomorphisms"
    Hossein Hajiabolhassan, A Daneshgar
    PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, Vol. 63, pp.49-64, 2004
  30. "Sparse H-colorable graphs with large girth and bounded degree"
    Hossein Hajiabolhassan, X Zhu
    GRAPHS AND COMBINATORICS, Vol. 20, pp.65-71, 2004
  31. "Circular chromatic number of subgraphs"
    Hossein Hajiabolhassan, X Zhu
    JOURNAL OF GRAPH THEORY, Vol. 44, pp.95-105, 2003
  32. "Graph homomorphisms through random walks"
    Hossein Hajiabolhassan, A Daneshgar
    JOURNAL OF GRAPH THEORY, Vol. 44, pp.15-38, 2003
  33. "Circular chromatic number and Mycielski construction"
    Hossein Hajiabolhassan, X Zhu
    JOURNAL OF GRAPH THEORY, Vol. 44, pp.106-115, 2003
  34. "Circular chromatic number of kneser graphs"
    Hossein Hajiabolhassan, X Zhu
    JOURNAL OF COMBINATORIAL THEORY SERIES B, Vol. 88, pp.299-303, 2003
  35. "Some Concepts in List Coloring"
    Changiz Eslahchi, , Hossein Hajiabolhassan
    Journal of Combinatorial Mathematics and Combinatorial Computing, Vol. 41, pp.151-160, 2002
  36. "Uniquely 2-list colorable graphs"
    Hossein Hajiabolhassan, Y Ganjali, M Ghebleh, B Sadjad
    DISCRETE APPLIED MATHEMATICS, Vol. 119, pp.217-225, 2002
  37. "A note on Hall-condition number of a graph"
    Hossein Hajiabolhassan, M.L Mehrabadi, R Tusserkani
    ARS COMBINATORIA, Vol. 55, pp.215-216, 2000
  38. "Minimal colorings and strength of graphs"
    Hossein Hajiabolhassan, M.L Mehrabadi, R Tusserkani
    DISCRETE MATHEMATICS, Vol. 215, pp.265-270, 2000
  39. "A characterization of uniquely colorable graphs using minimal defining sets"
    Hossein Hajiabolhassan, M.L Mehrabadi, R Tusserkani, M Zaker
    DISCRETE MATHEMATICS, Vol. 199, pp.233-236, 1999
  40. "On clique polynomials"
    Hossein Hajiabolhassan, M.L Mehrabadi
    Australasian Journal of Combinatorics, Vol. 18, pp.313-316, 1998
  41. "A counterexample for Hilton Johnson s conjecture on list coloring of graphs"
    Hossein Hajiabolhassan, Changiz Eslahchi, M.L Mehrabadi, R Tusserkani
    Australasian Journal of Combinatorics, Vol. 18, pp.127-131, 1998
  42. "Uniquely total colorable graphs"
    Hossein Hajiabolhassan, S Akbari, Mehdi Behzad, E.S Mahmoodian
    GRAPHS AND COMBINATORICS, Vol. 13, pp.305-314, 1997
  43. "On Derived Groups of Division Rings II"
    Hossein Hajiabolhassan, M Mahdavi Hezaveh, S Akbari Feysaabadi, M.L Mehrabadi
    COMMUNICATIONS IN ALGEBRA, Vol. 23, pp.2881-2887, 1995
  44. "عدد تناوبی گرافها"
    حسین حاجی ابوالحسن، میثم علیشاهی
    پژوهش های ریاضی، نسخه 6، صفحات:39-46، 1398

مقالات علمی ارائه شده در همایش‌ها

  1. "circular coloring through graph powers"
    Hossein Hajiabolhassan
    workshop on graph homomorphisms, 2011
  2. "Graph Homomorphisms through Graph Powers"
    Hossein Hajiabolhassan
    International conference on recent trends in graph theory and combinatorics, 2010
  3. "visual cryptography"
    Hossein Hajiabolhassan
    6th international isc conference on information security and ryptology (iscisc09), 2009
  4. "Graphs Homomorphisms and Spectral Conditions"
    Hossein Hajiabolhassan
    Workshop on Graphs Morphisms and Applications, 2005
  5. "On some Applications of Algebraic Topology in Combinatorics"
    Hossein Hajiabolhassan
    Annual Iranian Mathematics Conferences(35th), 2005
  6. "Sparse H-Colorable Graphs with Large Girth"
    Hossein Hajiabolhassan
    ICM 2002, 2003
  7. "On no Homomorphism Conditions"
    Hossein Hajiabolhassan
    Combinatorics Linear Algebra and Graph Coloring, 2003
  8. "Clique Polynomial"
    Hossein Hajiabolhassan
    Workshop on Colorings and Homomorphisms, 2000
  9. "Chromatic Sum"
    Hossein Hajiabolhassan
    Workshop on Colorings and Homomorphisms, 2000