Search Results - "Il'kiv, Volodymyr"

Nonlocal problem with moment conditions for hyperbolic equations by Volodymyr S. Il'kiv, Zinovii M. Nytrebych, Petro Ya. Pukach

“…We investigate a problem with nonlocal integral moment conditions with respect to the time variable for partial differential equation with constant…”
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On nonexistence of global in time solution for a mixed problem for a nonlinear evolution equation with memory generalizing the Voigt-Kelvin rheological model by Pukach, Petro, Il'kiv, Volodymyr, Nytrebych, Zinovii, Vovk, Myroslava

“…The paper deals with investigating of the first mixed problem for a fifth-order nonlinear evolutional equation which generalizes well known equation of the…”
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Conditions of solvability of the nonlocal boundary-value problem for a differential-operator equation with weak nonlinearity by Il’kiv, Volodymyr S., Strap, Nataliya I., Volyanska, Iryna I.

“…We study the solvability of a nonlocal boundary-value problem for a differential equation with nonlinearity. The linear part of the equation has complex…”
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Boundary-value problems with integral conditions for a system of Lame equations in the space of almost periodic functions by Volodymyr S. Il'kiv, Zinovii M. Nytrebych, Petro Ya. Pukach

“…We study a problem with integral boundary conditions in the time coordinate for a system of Lame equations of dynamic elasticity theory of an arbitrary…”
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The differential-symbol method of constructing the quasipolynomial solutions of two-point in time problem for nonhomogeneous partial differential equation by NYTREBYCH, Zinovii, IL’KIV, Volodymyr, PUKACH, Petro, MALANCHUK, Oksana

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Solvability of a nonlocal boundary-value problem for the operator-differential equation with weak nonlinearity in a refined scale of Sobolev spaces by Il’kiv, Volodymyr S., Strap, Nataliya I.

“…A nonlocal boundary-value problem for the differential equation with weak nonlinearity and with differential operator B  = ( B 1 , …,  B p ), where B j ≡ z j ∂…”
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Differential-symbol method of constructing the quasipolynomial solutions of a two-point problem for a partial differential equation by Nytrebych, Zinovii M., Il’kiv, Volodymyr S., Pukach, Petro Ya, Malanchuk, Oksana M.

“…We studied the solvability of a problem with local inhomogeneous conditions two-point in time for a homogeneous differential equation which is second-order in…”
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On qualitative methods in the investigation of the nonlinear oscillations mathematical models in some electromechanical systems by Pukach, Petro, Il'kiv, Volodymyr, Nytrebych, Zinovii, Vovk, Myroslava

“…The qualitative results on the well-posedness of the problems about the nonlinear oscillations in the mechanical subsystems as components of some general…”
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Advanced approach in the research methods of the mathematical models of strongly nonlinear physical systems by Pukach, Petro, Il'kiv, Volodymyr, Nytrebych, Zinovii, Vovk, Myroslava, Pukach, Pavlo

“…The approximation methods to investigate the dynamical processes in the strong nonlinear single-or multi-degree physical systems are studied in the paper. The…”
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Investigation of the mathematical model of bending oscillations of the oil tanks' walls in the transformers considering nonlinear dissipative forces by Pukach, Petro, Il'kiv, Volodymyr, Nytrebych, Zinovii, Vovk, Myroslava

“…The results on correct well-posedness of the problem about small bending oscillations of the oil tank walls of the transformer in the nonlinear medium are…”
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Modified Mathematical Model of Vibrations of a Long-Sized Plate and its Application to the Analysis of MEMS Structures by Vovk, Myroslava, Pukach, Petro, Malanchuk, Oksana, Nytrebych, Zinovii, Kohut, Ihor, Il'kiv, Volodymyr

“…The research and analysis of wave processes in micro- and nanoscale structures are closely related to searching for precise analytical solutions of…”
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Galerkin Method and Qualitative Approach for the Investigation and Numerical Analysis of Some Dissipative Nonlinear Physical Systems by Pukach, Petro, Il'kiv, Volodymyr, Nytrebych, Zinovii, Vovk, Myroslava, Shakhovska, Natalia, Pukach, Pavlo

“…The mathematical models of the oscillations for the important classes of the nonlinear physical systems with dissipation are considered in the paper. It is…”
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On the Mathematical Model of Nonlinear Oscillations under the Impact of a Moving Environment by Pukach, Petro, Nytrebych, Zinovii, Ilkiv, Volodymyr, Vovk, Myroslava, Pukach, Yulia

“…Wave theory of movement is used to study the mathematical model of a physical system which describes oscillations of a one-dimensional elastic body under the…”
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On the Modeling of the Oscillating Process of Longitudinal Elastic Body by Two-Point Problem by Nytrebych, Zinovii, Ilkiv, Volodymyr, Malanchuk, Oksana, Pukach, Petro

“…The oscillating process of an elastic one-dimensional longitudinal body like bar with known values of the body position at two moments of time is described by…”
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On Simulation of Wave Processes in Electromechanical Systems by a Problem with Two- Point Time Conditions by Nytrebych, Zinovii, Pukach, Petro, Ilkiv, Volodymyr, Malanchuk, Oksana

“…Wave processes in an infinite membrane under the action of external force at given conditions of the process at two moments of time are modeled by a two-point…”
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Order Relation on Scalar Products in Real Linear Spaces by Ilkiv, Volodymyr, Nytrebych, Zinovii, Pukach, Petro, Kohut, Ihor, Pakholok, Bohdan

“…We consider the problem of comparison of scalar products in real linear spaces. Such problem arise during synthesis and optimal choosing of discrete and…”
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Analytical Method of Investigation of Wave Processes in Mathematical Models of Some Dynamic Systems by Nytrebych, Zinovii, Pukach, Petro, Ilkiv, Volodymyr, Malanchuk, Oksana

“…The mathematical model of two-dimensional body oscillations with given profiles and stresses at two moments of time is proposed. The method of research of this…”
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The Mathematical Models of Mechanical and Electromechanical Systems Study via the Qualitative and Analytical Approach by Pukach, Petro, Nytrebych, Zinovii, Ilkiv, Volodymyr, Vovk, Myroslava, Malanchuk, Oksana

“…The mathematical models of the transverse oscillations of the elastic two-dimensional body taking into account the nonlinear behavior of the external…”
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A simple efficient parallel method of time-varying polynomials rooting by Il'kiv, V., Kulynych, Y., Pelekh, Y., Sokhan, P., Svizinsky, V.

“…A new simple effective algorithm, which determines all roots of polynomial and also updates all roots of time-varying polynomials simultaneously, is presented…”
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