Катедра "Математика"

    1. Dimitrova I., V. H. Fernandes, J. Koppitz, T.M. Quinteiro, Ranks of monoids of endomorphisms of a finite undirected path, Bulletin of the Malaysian Mathematical Sciences Society, 43(2), (2020), 1623–1645.
    2. Dimitrova I., V.H. Fernandes, J. Koppitz, T.M. Quinteiro, Partial Automorphisms and Injective Partial Endomorphisms of a Finite Undirected Path, Semigroup Forum, 103(1), (2021), 87–105.
    3. Dimitrova I., J. Koppitz, On Relative Ranks of the Semigroup of Orientation-preserving Transformations on Infinite Chains, Asian-European Journal of Mathematics, 14(8), (2021), 2150146.
    4. Dimitrova I., J. Koppitz, On relative ranks of the semigroup of orientation-preserving transformations on infinite chain with restricted range, Communications in Algebra, (2022).
    5. Dimitrova I., J. Koppitz, The rank of the inverse semigroup of all partial automorphisms on a finite crown, Monatshefte für Mathematik, 202, (2023), 119–140. https://doi.org/10.1007/s00605-023-01880-9
    6. Dimitrova I., V.H. Fernandes, J. Koppitz, T.M. Quinteiro, Presentations for three remarkable submonoids of the dihedral inverse monoid on a finite set, Semigroup Forum, 107, (2023), 315–338. https://doi.org/10.1007/s00233-023-10396-5
    7. Dimitrova I., V.H. Fernandes, J. Koppitz, T.M. Quinteiro, On three submonoids of the dihedral inverse monoid on a finite set, Bulletin of the Malaysian Mathematical Sciences Society, 47, Article number: 27 (2024). https://doi.org/10.1007/s40840-023-01620-0
    8. Dimitrova I., V.H. Fernandes, J. Koppitz, On partial endomorphisms of a star graph, Quaestiones Mathematicae, Published online: 31 Jul 2024. https://doi.org/10.2989/16073606.2024.2374796
    9. Stefanov S. M., Separable Optimization: Theory and Methods. Springer International Publishing, Springer Optimization and Its Applications, vol. 177, New York (2021) XVIII + 356 pp.
    10. Stefanov S. M., Characterization of the optimal solution of the convex separable continuous knapsack problem and related problems. Journal of Information and Optimization Sciences, vol. 42, No. 1 (2021) pp. 1-16.
    11. Stefanov S. M., On the numerical solution of separable stochastic inventory control problems. Journal of Information and Optimization Sciences, vol. 42, No. 3 (2021) pp. 533-561.
    12. Stefanov S. M., Numerical solution of some systems of nonlinear algebraic equations, Journal of Interdisciplinary Mathematics, vol. 24, No. 6 (2021) pp. 1545-1564.
    13. Stefanov S. M., Numerical solution of systems of nonlinear equations defined by convex functions, Journal of Interdisciplinary Mathematics, 12 pp., published online 20 September 2021.
    14. Naskinova, I., Kolev, M., Markovska, A., On the innate immune response to intracellular bacterial infections, Asian-European Journal of Mathematics, 2020, 13(8), 2050170.
    15. Garkova, B., M. Kolev, A. Markovska, Numerical Investigation of Adaptive Immune Response to Viral Infection, Lecture Notes in Computer Science, 2015, 242-250.
    16. Grozdanov, V., The weighted b-adic diaphony, Journal of Complexity, 2006, 22(4), 490–513.
    17. Baycheva, S., Grozdanov, V., The hybrid weighted diaphony, Comptes Rendus de L'Academie Bulgare des Sciences, 2015, 68(4), 437–448.
    18. Ristovska, V.D., Grozdanov, V., On the (WGb,φ; α; β; γ)-diaphony of the net of zaremba–halton over finite groups, Comptes Rendus de L'Academie Bulgare des Sciences, 2017, 70(3), 341–352.
    19. Donchev, T., Kitanov, N., Kolev, D., Stability for the solutions of parabolic equations with maxima, Panamerican Mathematical Journal, 2010, 20(2), 1–20.
    20. Kitanov, N.M., Method of averaging for optimal control problems with impulsive effects, International Journal of Pure and Applied Mathematics, 2011, 72(4), 573–589.
    21. Kitanov, N.M., Method of averaging for optimal control problems with impulsive effects, International Journal of Pure and Applied Mathematics, 2011, 72(4), 573–589.
    22. Bilal S., Donchev T., Kitanov N., Javaid, Nonlocal Riemann-Liouville fractional evolution inclusions in Banach space, Asian-European Journal of Mathematics, 13(8), (2020), 2050162.
    23. Samardzhiev, K., Kitanov, N., Mathematical Modeling in FOOD Industri, Proceedings of the Scientific Conferense “Enhancement of the competitiveness and restructuring of the food subsectors throught benchmarking”, 2014.
    24. Stoyanova, M., Tuparova, D., Samardzhiev, K., Gamification in 11th grade mathematics lessons – One possible interactive approach, Advances in Intelligent Systems and Computing, 2017, 545, 41–53.
    25. Stoyanova, M., Tuparova, D., Samardzhiev, K., Impact of motivation, gamification and learning style on students’ interest in maths classes – a study in 11 high school grade, Advances in Intelligent Systems and Computing, 2018, 716, 133–142.
    26. Samardzhiev, K., Tuparova, D, Stoyanova, M., Gamification in education behaviorism cognitivism constructivism, Proceedings of the National Conference on "Education and Research in the Information Society", 2018, 31-40. ISSN 1314-0752