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JOURNALS // Bulletin of Irkutsk State University. Series Mathematics // Archive

2025, Volume 51


Dynamic systems and optimal control
Exact formulas for the increment of the cost functional in optimal control of linear balance equation
E. V. Goncharova, N. I. Pogodaev, M. V. Staritsyn
3

Integro-differential equations and functional analysis
Hyperbolic volumes of two bridge cone-manifolds
A. D. Mednykh, A. B. Qutbaev
21
Ferrohydrodynamic instability of a viscoelastic magnetic fluid layer under the influence of time-varying magnetic field
Ch. Balaji, S. Maruthamanikandan, Ch. Rudresha, V. Vidya Shree
34
Positive solutions of nabla fractional Sturm–Liouville problems
J. M. Jonnalagadda, J. E. Nápoles Valdés
50
A note on extended Saigo operators and their q-analogues
K. K. Chaudhary, S. B. Rao
66

Algebraic and logical methods in computer science and artificial intelligence
Concave continuations of Boolean-like functions and some of their properties
D. N. Barotov
82
On regularity of Sylow $p$-subgroups of the Chevalley group of types $F_4, E_6$ over the ring $\mathbb{Z}_{p^m}$
S. G. Kolesnikov, A. I. Polovinkina
101
Object ontologies as a Priori models for logical-probabilistic machine learning
D. N. Gavrilin, A. V. Mantsivoda
116
Implicatively precomplete sets of multioperations defined on a set of three elements
V. I. Panteleev
130
Intransitive temporal multi-agent logic with agents' multi-valuations. Decidability
K. V. Grekovich, V. V. Rybakov, V. V. Rimatskiy
141
Classes of fuzzy models
G. E. Yakhyaeva
151

Personalia
On the 85th birthday anniversary of the RAS Corresponding Member, professor A. A. Tolstonogov
I. V. Bychkov, V. A. Dykhta, A. L. Kazakov, N. I. Pogodaev, V. A. Shelekhov
167


© Steklov Math. Inst. of RAS, 2026