A joint seminar of the departments of Mathematical Modeling and Numerical Analysis and Mathematical Foundations of Informatics will be held on January 5th, 2023 (Thursday), at 3:00 pm in Room 403 of IMI - BAS. A talk on Universal extrema of potentials of certain classes of spherical designs will be delivered by Prof. Sergiy Borodachov, Towson University. Abstract: We will discuss known results and our work on locations of absolute minima and maxima of the total potential of N points located on a higher-dimensional sphere that form a spherical design of the highest (in some sense) strength. The potential is a completely monotone function of the Euclidean distance squared. These results apply to a quite extensive list of particular spherical configurations. For power-law potentials [...]
The next meeting of the Mathematical Foundations of Informatics seminar will be held on September 19, 2022, at 2 p.m. (UTC+2) in the Conference Room of the Institute of Mathematics and Informatics. A talk on On the minimal sum of edges in a signed edge-dominated graph will be delivered by Danila Cherkashin. Abstract Everybody is invited.
On June 10, 2022 (Friday) at 2:00 pm (UTC+3) in the Conference Room of IMI, the pre-defense will take place of the PhD thesis in the professional division 4.5. Mathematics, scientific field: 01.01.02. Algebra and number theory, of Pascal Nikolaev Piperkov PhD student in the MOI Department of IMI-BAS Dissertation topic: Discrete transformations and their application in the coding theory and combinatorics Scientific adviser: Prof. Dr. Iliya Buyukliev For online participation (Zoom): https://us02web.zoom.us/j/84701255174?pwd=bnVQV290cExnS2p3RVpRZDdWdFlBUT09 Meeting ID: 847 0125 5174, Passcode: 896181
On June 10, 2022 (Friday) at 1:00 pm in the Conference Room of IMI a meeting of the seminar of the department of Mathematical Foundations of Informatics will be held. A talk on: Sperner’s Theorem, Voting Theory, Balancing the Graph System, Strong and Weak Subsets of the Multiset will be given by Stepan Tarasenko, Kiev Polytechnic Institute, regarding his enrollment in the PhD program. For online participation (Zoom): https://us02web.zoom.us/j/84701255174?pwd=bnVQV290cExnS2p3RVpRZDdWdFlBUT09 Meeting ID: 847 0125 5174, Passcode: 896181
The next meeting of the seminar of Mathematical Foundations of Informatics organized by the Department of Mathematical Foundations of Informatics, IMI - BAS, Faculty of Mathematics and Informatics, Veliko Tranovo University, will be held on January 27, 2022, at 2 pm (UTC+2) in Zoom. A talk will be delivered by Konstantin Vorobyov, post-doctoral students at the MOI Department of IMI - BAS, on: Binary codes with two distances Резюме: In this work, we prove two conjectures from a paper on two distance codes by Boyvalenkov, Delchev, Zinoviev and Zinoviev (Discrete Math., 344(5), 112318, https://doi.org/10.1016/j. disc.2021.112318). We also prove several new upper and lower bounds on A_2(n,d1,d2) (i.e. the maximal cardinality of a binary code of length n with distances d1 < d2) and provide new [...]
The Department of Mathematical Foundations of Informatics is organizing a seminar under the project „Strategies for improving the quality of models identified by machine learning algorithms with application in quantum tomography“. A talk will be delivered by Violeta Ivanova-Rohling and Niklas Rohling on: Quantum state tomography as a numerical optimization problem Abstract: We present a framework that formulates the quest for the most efficient quantum state tomography scheme as an optimization problem which can be solved numerically. This approach can be applied to a broad spectrum of relevant setups including measurements restricted to a subsystem. To illustrate the power of this method we present results for the six-dimensional Hilbert space constituted by a qubit-qutrit system, which could be realized e.g. by the N-14 nuclear [...]
The Department of MATHEMATICAL FOUNDATIONS OF INFORMATICS is organizing a seminar under the project Algebraic and Geometric Data Protection Methods, KП-06-Н32/2-2019. Talks will be delivered by: Pascal Piperkov, PhD student, IMI - BAS on: Applications of Discrete Transformations for Calculating the Parameters of a Linear Code over compound finite field Lyubomir Borisov, IMI - BAS on: An efficient algorithm for computing the parity of order of elliptic curves over Fp Abstract: In cryptographic applications it is desirable to employ elliptic curves of very large prime order to keep the security on a highest possible level. There is an efficient algorithm which computes the order of a given elliptic curve of general type . To our knowledge the complexity of that algorithm is O(log8 q) [...]
Seminar MATHEMATICAL FOUNDATIONS OF INFORMATICS The next meeting of the seminar will be held on January 16, 2020, at 2:00 p.m. in IMI - Veliko Tarnovo. A talk on: Algorithmic Implementation of AES will be delivered by Maria Pashinska, MFI Department, IMI-BAS. Everybody is invited.
Seminar MATHEMATICAL FOUNDATIONS OF INFORMATICS The next meeting of the seminar will be held on October 23, 2019, at 2:30 p.m. in IMI - Veliko Tarnovo. A talk on: Prallel Implementation of Backtracking Search will be delivered by Svetlana Topalova, IMI-BAS. Everybody is invited.
Seminar MATHEMATICAL FOUNDATIONS OF INFORMATICS The next meeting of the seminar will be held on October 11, 2019, at 2:00 p.m. in Room 503 of IMI-BAS. A talk on: The domination number of the graph defined by two levels of the n-cube will be delivered by Gyula Katona, MTA Renyi Institute, Budapest, Hungary. . Abstract Everybody is invited.