# Browsing Механико-математический факультет by Title

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• (Vestnik Sankt-Peterburgskogo Universiteta, Prikladnaya Matematika, Informatika, Protsessy Upravleniya, 2019)
Consider the problem of determining the coefficients in the differential equation of parabolic types and boundary conditions on the known sections of the solutions of the initial-boundary value problem. Used spectral ...
• (Bulletin of the Karaganda university - Mathematics, 2017)
This article shows the way to solve a specific problem of transport logistics using the potential method. The first support plan is constructed by the method of the north-western corner. The article also shows a graphical ...
• (Journal of mathematical inequalities, 2018-09)
Let Lambda(q)(omega), q > 0, denote the Lorentz space equipped with the (quasi) norm parallel to f parallel to(Lambda q(omega)) := (integral(1)(0) (f*(t)omega(t))(q)dt/t)(1/q) for a function integral on [0,1] and ...
• (Bulletin of the Karaganda university - Mathematics, 2019)
A well-known analogy of the flow of viscous incompressible fluid and incompressible elastic medium. According to this analogy, the solution of the equations of the elasticity theory with the Poisson's ratio nu = 0; 5 and ...
• (Linear Algebra and Its Applications, 2016-04-01)
We show the following function on m-tuples of positive operators in finite von Neumann algebra M: Φ p(A1,A2,⋯, Am)=∥(∑k=1mAkp)1/p∥LE(M) is jointly convex for 1≤p≤2 and for any symmetric norm ∥·∥LE(M) associated with M. © ...
• (Journal of Inequalities and Applications, 2016-12-01)
We establish characterizations of both boundedness and of compactness of a general class of fractional integral operators involving the Riemann-Liouville, Hadamard, and Erdelyi-Kober operators. In particular, these results ...
• (International Journal of GEOMATE, 2020)
The application of bucketless bottom unloading rotor with oblique cutting knife type cutting elements on the earthmoving machine allows enhancing significantly its excavation quantities in the road construction compared ...
• (Bulletin of the Karaganda university - Mathematics, 2019)
In this paper we study the following equation -y ''' + r(x)y '' + q (x)y ' + s(x) y = f (x), where the intermediate coefficients r and q do not depend on s. We give the conditions of the coercive solvability for f is an ...
• (Mathematical Methods in the Applied Sciences, 2017-07-30)
For graph domains without cycles, we show how unknown coefficients and source terms for a parabolic equation can be recovered from the dynamical Neumann-to-Dirichlet map associated with the boundary vertices. Through use ...
• (Bulletin of the Karaganda university - Mathematics, 2019)
This article discusses the problems of today's infocommunication networks, the basis of which are multiservice networks serving all types of traffic, presented as a set of IP packets. The characteristic features of this ...
• (Eurasian mathematical journal, 2018)
We investigated a minimal closed in the space l(2) first order nonsymmetric difference operator L. The matrix of zero order coefficients of L may be an unbounded operator. The study of L is motivated by applications to ...
• (Ural Mathematical Journal, 2020)
In this paper, we consider the anisotropic Lorentz space L∗¯p, ¯θ (Im) of periodic functions of m variables. The Besov space B(0,α,τ)¯p, ¯θ of functions with logarithmic smoothness is defined. The aim of the paper is to ...
• (Eurasian Mathematical Journal, 2020)
In this paper the problem of the existence of solutions is studied for a hyperbolic type differential equation defined in an unbounded domain. The problem of the smoothness of solutions is also considered here. Such problems ...
• (Mathematical Inequalities and Applications, 2019)
We investigate the power weights fractional order Hardy-type inequality in the following form: (Equation presented) for 0 < α < 1 and 1 < p < ∞ in fractional h-discrete calculus, where C = 2 1/p α -1 /(p-pα) 1/p. For ...
• (News of the National Academy of sciences of the Republic of Kazakhstan-series physico-mathematical, 2020)
At present, the question of studying multidimensional nonlinear evolution equations in the framework of the theory of solitons is very relevant. Their usefulness is confirmed by numerous scientific publications, articles ...
• (Cogent Engineering, 2020-01-01)
This paper focuses on the problem of global practical output tracking for a class of high-order non-linear systems with time-varying delays (via state feedback). Under mild growth conditions on the system nonlinearities ...
• (Cogent engineering, 2020-01)
This paper focuses on the problem of global practical output tracking for a class of high-order non-linear systems with time-varying delays (via state feedback). Under mild growth conditions on the system nonlinearities ...
• (Mathematical inequalities and applications, 2018)
We establish criteria for both boundedness and compactness for some classes of integral operators with logarithmic singularities in weighted Lebesgue spaces for cases 1 < p <= q < infinity and 1 < q < p < infinity. As ...
• (Bulletin of the Karaganda university - Mathematics, 2017)
We establish necessary and sufficient conditions the validity of the discrete Hardy-type inequality (Sigma(infinity)(i=1)(Sigma(infinity)(j=1) a(i,j) f(j))(q) u(i)(q))(1/q) <= (Sigma(infinity)(i=1) f(i)(p)v(i)(p))(1/p) ...
• (Journal of Inequalities and Applications, 2018)
The first power weighted version of Hardy's inequality can be rewritten as integral(infinity)(0) (x(alpha-1) integral(x)(0) 1/t(alpha)f(t)dt)(p) dx <= [p/p - alpha - 1](p) integral(infinity)(0)f(p)(x)dx, f >= 0, p >= ...