The System Needs Stability and Flexibility, Not Self-Serving ‟Innovations”
Philip Petrov,
Editor-In-Chief
Dear readers, 2025 did not pass without attempts to rewrite and reshape the school curricula yet again. By coincidence, this happened while I was working on editing a new textbook for the Information Technologies subject. These dynamic times led me to the following comic situation – for the textbook to be outdated before even being fully written...
A Method for Solving Extremal Problems in Algebra and Stereometry
Ivaylo Dimitrov 1), Nina Dimitrova 2), Miroslav Hristov 3), Elis Kodzha 4), Mehmed Kodzha 5)
1)High School of Mathematics Nancho Popovich Shumen (Bulgaria)
2)Secondary School Panayot Volov Shumen (Bulgaria)
3)Faculty of mathematics and computer science Shumen University (Bulgaria)
4)High School of Agriculture and Food Technology Shumen (Bulgaria)
5)High School of Mathematics Nancho Popovich Shumen (Bulgaria)
https://doi.org/10.53656/math2026-1-1-mse
Abstract. In this article, we propose a method for solving extremal problems in algebra and stereometry…
Fast Adaptive Entropy-driven Multilevel Image Segmentation using Look-up Tables on GPU Platforms
Georgi Petrov
Department of Telecommunications,
New Bulgarian University,
Sofia (Bulgaria)
https://doi.org/10.53656/math2026-1-2-fae
Abstract. This paper proposes a fast, adaptive method for multilevel image segmentation based on Kapur’s entropy. Implemented on CPU and GPU, the method achieves up to 40× acceleration using CUDA and memory optimization…
Mathematical Modelling in the Computation of Volumes of Solids of Revolution
Radoslav Božić 1), Milenković Aleksandar 2), Mitrović Slađana 3)
1)Educons University, Faculty of Teacher Training, Novi Sad (Serbia)
2)University of Kragujevac, Faculty of Science, Kragujevac (Serbia)
3)University of Novi Sad, Faculty of Science, Novi Sad, Serbia
https://doi.org/10.53656/math2026-1-3-mmc
Abstract. In this paper, the influence of the mathematical modelling approach in computer-supported collaborative learning (CSCL final) on students’ knowledge of calculus contents, particularly the application of definite integral, is examined. The research was conducted with the final-grade students at the grammar school…
Lexaquery: a Hybrid Chatbot System for University Student Information Services
George Pashev, Silvia Gaftandzhieva
University of Plovdiv Paisii Hilendarski, Plovdiv (Bulgaria)
https://doi.org/10.53656/math2026-1-4-lhc
Abstract. Universities show a rapidly growing interest in using Artificial Intelligence tools. This paper presents LexaQuery, a new chatbot system for university information services that efficiently handles university information inquiries by combining computational linguistics with SQL database querying. Instead of relying on large, resource-intensive large language models (LLMs), LexaQuery uses rule-based natural language processing to translate student questions into structured SQL…
Methodological Issues and Teacher Observations on the Added Value оf Extended Mathematics Preparation in School
Kiril Bankov 1), Borislava Kirilova 1), Hristo Hristov 2)
1)Sofia University “St. Kliment Ohridski” – Sofia (Bulgaria)
2)European School of Brussels IV – Brussels (Belgium)
https://doi.org/10.53656/math2026-1-5-mit
Abstract. Teachers commonly consider the number of teaching hours in a particular subject to be insufficient for achieving sustainable results in the acquisition of knowledge and skills...
Twenty-Second International Linguistics Olympiad
Ivan Derzhanski
Institute of Mathematics and Informatics – Bulgarian Academy of Science – Sofia (Bulgaria)
https://doi.org/10.53656/math2026-1-6-til
Abstract. The article is devoted to the Twenty-second International Linguistics Olympiad held in 2025. It presents the results of the Bulgarian participants, a chart of the awards from past years...
