Математика и физика. Mathematics & Physics. 2022 15 (1)
Browse by
Recent Submissions
-
On Seawater Conductivity Control by Acoustic Radiation
(Сибирский федеральный университет. Siberian Federal University, 2022-02)The article presents the results of studying the acoustic radiation affecting the conductivity of the seawater (a solution of salt (NaCl) in water). At a salinity of 35 g/L (% ), pressure of 500–2500 Pa (Pascal), and ... -
Multi-Agents’ Temporal Logic using Operations of Static Agents’ Knowledge
(Сибирский федеральный университет. Siberian Federal University, 2022-02)We study an agents’ temporal logic with non-standard none-transitive temporal accessibility relations and operations of static agents’ knowledge. The main mathematical problem we work with is existence of algorithms for ... -
On the Multidimensional Boundary Analogue of the Morera Theorem
(Сибирский федеральный университет. Siberian Federal University, 2022-02)We discuss functions with the one-dimensional holomorphic extension property along com- plex lines and curves and also boundary multidimensional variants of the Morera theorem. We show how integral representations can ... -
On a Formula for Calculating the Resultant of Two Entire Functions
(Сибирский федеральный университет. Siberian Federal University, 2022-02)Using Newton’s recurrent formulae, we find the product of values of an entire function of one variable in zeroes of another entire function. This allows to answer whether they have common zeroes. By that, we propose an ... -
Detailed Factorization Identities for Classical Discriminant
(Сибирский федеральный университет. Siberian Federal University, 2022-02)A general polynomial in one variable is considered and the explicit factorization formulas for the truncations of the discriminant with respect to coordinate faces of the polynomial Newton polytope are presented. As a ... -
On a Multidimensional Version of the Principal Theorem of Difference Equations with Constant Coefficients
(Сибирский федеральный университет. Siberian Federal University, 2022-02)In the paper we consider systems of linear difference equations with discrete characteristic sets. A multidimensional version of the principal theorem of linear difference equations with constant coefficients is formulated ... -
The Euler-Maclaurin Formula in the Problem of Summation over Lattice Points of a Simplex
(Сибирский федеральный университет. Siberian Federal University, 2022-02)In the problem of summation over lattice points of a simplex we find an analog of the Euler–Maclaurin formula for discrete primitive function and the sum -
Density Problem Some of the Functional Spaces for Studying Dynamic Equations on Time Scales
(Сибирский федеральный университет. Siberian Federal University, 2022-02)In this paper we study some topological density properties of certain functional spaces on the time scales and its relationships to Lebesgue spaces in the sense of ∇-integrals on time scales. Our results are provided ... -
Some New Congruence Identities of General Partition for pr(n)
(Сибирский федеральный университет. Siberian Federal University, 2022-02)In the present work, we deduce some new congruences modulo 3 and 5 for pr(n), where r 2 f�����(3 + 3);�����(5 + 3) j is any non-negative integerg. Our emphasis throughout this paper is to exhibit the use of q-identities ... -
Satisfiability in a Temporal Multi-valueted Logic Based on Z
(Сибирский федеральный университет. Siberian Federal University, 2022-02)In this paper we continue the series of papers by V. V. Rybakov devoted to properties of multi-valueted logics and where he propose a new approach for modelling knowledge and reasoning of agents in a multi-agent system. ... -
Remarks on: "Generalized Contractions to Coupled Fixed Point Theorems in Partially Ordered Metric Spaces"
(Сибирский федеральный университет. Siberian Federal University, 2022-02)Remarks on the paper [1] are given and corrected proofs are presented. Their results remain correct -
On a Spectral Problem for Convection Equations
(Сибирский федеральный университет. Siberian Federal University, 2022-02)Spectral problems for stationary unidirectional convective flows in vertical heat exchangers at various boundary temperature conditions are considered. The constant temperature gradient on the vertical walls is used as ... -
NEXAFS and FTIR Spectroscopy of Co-doped SrBi2Nb2O9
(Сибирский федеральный университет. Siberian Federal University, 2022-02)The solid-phase ceramic method was used to synthesize cobalt-containing solid solutions based on SrBi2Nb2O9. NEXAFS (Near Edge X-ray Absorption Fine Structure) and IR spectroscopy were used to study the electronic state ... -
Anisotropy of the Electromechanical Characteristics of SH-Waves and Lamb Waves in Yttrium Aluminum Borate Single Crystals
(Сибирский федеральный университет. Siberian Federal University, 2022-02)The anisotropy of the electromechanical properties of SH-waves and Lamb waves in yttrium aluminum borates, which are nonmagnetic representatives of the RMe3(BO3)4 single crystals family (where R=Y, La-Lu; M=Fe, Al, Cr, ...