Vol. 82 No. 1 (2026)

• Glorious anniversary of an outstanding figure: to the 80th anniversary of the birth of Oleksandr Grigorovych Nakonechnyi

  Olena Kashpur, Michael Zgurovsky, Olena A. Kapustian, Nataliya Pankratova, Petro Zinko, Mariia Losieva

  7 - 12

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Algebra, Geometry and Probability Theory

• Extended unique fixed point theorem in complete quasi-metric space

  Anurag Kumar, Aparna Vyas, Gibak Kim

  13 - 16

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• Dynamics of a non-autonomous stochastic mutualism model with jumps

  Oleksandr Borysenko, Olga Borysenko

  17 - 26

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• Modelling HIV/AIDS epidemic in Ukraine as a continuous-time Markov process

  Olga Vasylyk, Yehor Okuniev

  27 - 33

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• On the class of exponential statistical structures of type B

  Oleksandr Volkov, Yurii Volkov, Nataliia Voinalovych

  34 - 42

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• Bounds simulation for fluid flow model of the second order

  Ievgen Karnaukh

  43 - 54

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• Analysis of linear systems with complex elements by the basis matrix method

  Volodymyr Kudin, Viacheslav Onotskyi

  55 - 62

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• On ergodic property of some Lévy-type processes in R^d

  Yana Mokanu

  63 - 71

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• The convergence of sequences in terms of positive and alternating Perron expansions

  Mykola Moroz

  72 - 77

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• Weak convergence analysis of dynamic cutting for Lévy-type processes

  Denis Platonov

  78 - 86

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• The H probability distributions

  Javier M. Huarca

  87 - 100

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Differential equations, mathematical physics and mechanics

• Robin's problem for a fourth-order hyperbolic equation

  Iryna Alexandrovich, Larisa Adzhubey, Andrii Ryzhenko, Viktor Lyashko

  101 - 105

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• Numerical modeling of aeroacoustic processes during the flow around wind turbine blade segments

  Serhii Aleksieienko, Liliya Nakashydze, Serhii Zolotarenko

  106 - 114

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• Stress-strain state of anisotropic thick-walled cylindrical shells under variable loading

  Alexander Grigorenko, Volodymyr Trach, Andrii Podvornyi, Natalia Zhukova

  115 - 118

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• Incomplete trigonometric splines in the problems of constructing approximate solutions of the second order linear differential equations

  Volodymyr Denysiuk, Tetiana Oleshko, Liudmyla Rybachuk

  119 - 125

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• The effect of acoustic radiation in an ideal fluid on the viscosity of a drop

  Oleksandr Zhuk, Yaroslav Zhuk, Maria Kashtalyan

  126 - 129

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• Stability of infection-free almost periodic solution in impulsive SEIR-model

  Oleksiy Kapustyan, Anna Sukretna, Dmytro Kapustian, Myrzagali Ospanov

  130 - 135

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• Singularity of the potential field at the vertex of a symmetric tip with four identical perpendicular wings of wedge-shaped form

  Andrii Loveikin, Andrii Krenevych

  136 - 142

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• Heat conduction problem for a composite cylinder with imperfect contact conditions between its layers

  Gennady Mishuris, Yurii Protserov, Natalya Vaysfeld, Zinaida Zhuravlova

  143 - 146

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• Controllability of pseudoparabolic integro-differential systems with memory

  Viktoriia Nazarchuk

  147 - 160

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• Resonance properties of a piezoelectric gyroscopic sensor based on bulk acoustic shear waves

  Іgor Ulitko, Oleksandr Boryseiko, Iryna Lebedyeva, Oleksandr Kurylko

  161 - 164

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• Model of deformation of in-plane reinforced fiberous materials with physically nonlinear matrix

  Elena Shikula, Nataliia Zhukova, Victor Vyshnivskyi, Svitlana Bilousova

  165 - 169

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Computer Science and Informatics

• Random networks in modeling heat and mass transfer in porous materials

  Oleg Afanasiev, Natalya Kizilova, Sergii Poslavskyi

  170 - 175

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• Comparative analysis of post-quantum digital signature protocols based on hash functions

  Oleksii Bashuk

  176 - 186

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• Integrated model of factor selection and categorical regression for predicting the implantation risk of diagnostic-therapeutic devices in gastroesophageal junction pathology

  Oleksandr Halushko

  187 - 194

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• The application of monolingual and multilingual BERT-based models for text automation tasks in Ukrainian

  Mykola Glybovets, Danylo Vanin

  195 - 205

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• Algorithmic approaches to modeling and analyzing endgame positions in backgammon

  Serhii Dotsenko, Georgi Dimitrov, Anastasiya Vecherkovskaya, Igor Makushenko

  206 - 212

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• Intermediate layer configurations for image similarity: evaluating multi-level feature extraction across CNN and transformer architectures

  Volodymyr Kubytskyi, Artem Bozhok

  213 - 217

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• Frame rule in monotone Floyd – Hoare logic extension

  Andrii Kryvolap, Olena Shyshatska, Nataliia Rusina

  218 - 224

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• Improvements to the circuit breaker prediction model for increasing the fault tolerance of microservices

  Anatolii Pashko, Ihor Paprotskyi, Andrii Glybovets, Svitlana Terenchuk

  225 - 236

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• Statistical analysis of factors affecting the incidence of diabetes mellitus

  Mykola Pychtar, Myroslava Lytvyn

  237 - 241

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• Digital twin in the structure of the modern educational environment

  Tetiana Savchenko, Nataliia Lutska, Lidiia Vlasenko, Ivan Parkhomenko

  242 - 254

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• Meta-analysis of Pareto-optimal object detection models for unmanned aerial vehicles on the VisDrone2019-DET dataset

  Yaroslav Smolin, Viacheslav Liskin

  255 - 264

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• Basic properties of the metric of tangents

  Maryna Chigidina, Iryna Lazarenko, Dmytro Nomirovskii, Bogdan Rublyov, Vladimir Semenov, Kateryna Svitovenko

  265 - 272

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• Subdiffusive models with local volatility for illiquid markets

  Nataliya Shchestyuk, Dmytro Sluchynskyi, Fedir Serduk

  273 - 279

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Modern Physics

• Influence of the positive feedback resistor resistance on the amplitude-frequency response of the gyrator based on the operational amplifier

  Ihor Bekh, Roman Bohdanov

  280 - 284

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• Effect of the polymer network on the diffusion of foreign particles in hydrogels

  Yuri Zabashta, Yaroslav Lazarenko, Oleksandr Alekseev, Lena Vergun, Kateryna Hnatiuk, Dmytro Andrusenko, Kateryna Yablochkova, Roman Dinzhos, Neli Koseva, Maksym Lazarenko

  285 - 292

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