Results 21 to 30 of about 1,121,600 (292)
Electronic Journal of Qualitative Theory of Differential Equations, 2019 We consider the following equation \[-y''+r\left(x\right)y'+q\left(x\right)y=f(x), \] where the intermediate coefficient $r$ is not controlled by $q$ and it is can be strong oscillate. We give the conditions of well-posedness in $L_{p} \left(-\infty ,\,
Kordan Ospanov
doaj +1 more source
Unbounded-time analysis of guarded LTI systems with inputs by abstract acceleration
, 2015 Linear Time Invariant (LTI) systems are ubiquitous in software systems and control applications. Unbounded-time reachability analysis that can cope with industrial-scale models with thousands of variables is needed. To tackle this general problem, we use
Dario Cattaruzza +13 more
core +2 more sources
Meixner polynomials and their properties
Доповiдi Нацiональної академiї наук України, 2019 A number of properties of a special case of Meixner polynomials given by their generating function are investigated. These polynomials arise when applying the Cayley transformation method to solving the first bounda ryvalue problem for an abstract ...
V.L. Makarov
doaj +1 more source
Advances in Mechanical Engineering, 2021 This paper presents the weak formulation of a quasi-static evolution model for two deformable bodies with uni-directional adhesive unilateral contact on which external loads act.
Ramiro Peñas Galezo
doaj +1 more source
Presenting a Scale-Free Complex Network with a Persian Language Layered Composition Pattern [PDF]
علوم و فنون مدیریت اطلاعات, 2023 Purpose: This article proposes a method for investigating the patterns of composition and topological structure of the Persian language. The enhanced method analyzes Persian text by representing it as a simultaneous network graph within the framework of ...
Ali Sarabadani +2 more
doaj +1 more source
Measures for orthogonal polynomials with unbounded recurrence coefficients
Journal of Approximation Theory, 2016 Systems of orthogonal polynomials whose recurrence coefficients tend to infinity are considered. A summability condition is imposed on the coefficients and the consequences for the measure of orthogonality are discussed. Also discussed are asymptotics for the polynomials.
Alexander I. Aptekarev +1 more
openaire +2 more sources
Conditions for maximal regularity of solutions to fourth-order differential equations
Қарағанды университетінің хабаршысы. Математика сериясыThis article investigates a fourth-order differential equation defined in a Hilbert space, with an unbounded intermediate coefficient and potential. The key distinction from previous research lies in the fact that the intermediate term of the equation ...
Ye.O. Moldagali, K.N. Ospanov
doaj +1 more source
MathematicsIn this paper, we present sufficient conditions for Hyers-Ulam-Rassias stability of nonlinear implicit higher-order Volterra-type integrodifferential equations from above on unbounded time scales.
Andrejs Reinfelds, Shraddha Christian
doaj +1 more source
On the solvability of boundary value problem for mixed-type equation with a singular coefficient
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2014 In this paper we study a problem with conditions on the inner characteristic and on some parts of the degeneration line for mixed type equation with singular coefficient in unbounded domain.
Menglibay Kh Ruziev
doaj +1 more source
On coupled systems of PDEs with unbounded coefficients [PDF]
Dynamics of Partial Differential Equations, 2020 We study the Cauchy problem associated to parabolic systems of the form $D_t\boldsymbol{u}=\boldsymbol{\mathcal A}(t)\boldsymbol u$ in $C_b(\mathbb{R}^d;\mathbb{R}^m)$, the space of continuous and bounded functions $\boldsymbol{f}:\mathbb{R}^d\to\mathbb{R}^m$.
Angiuli L., Lorenzi L.
openaire +5 more sources