Výsledky vyhledávání - "I. P. Polovinkin"

Autor: M. V. Polovinkina, A. L. Muglanov, I. P. Polovinkin

Publikováno v: Lobachevskii Journal of Mathematics. 41:853-868

We consider the mean value theorem for the wave equation in the Euclidean space to be a starting point to produce other mean value theorems for the wave equations on a sphere and in a space. We use transformations connecting the wave equation in the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b872332cb16add6086f2334667e8f580
https://doi.org/10.1134/s1995080220050091

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On the stability of stationary solutions in diffusion models of oncological processes

Autor: I. P. Polovinkin, Amar Debbouche, M. V. Polovinkina, Sergio Adriani David, C. A. Valentim

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

We prove a sufficient condition for the stability of a stationary solution to a system of nonlinear partial differential equations of the diffusion model describing the growth of malignant tumors. We also numerically simulate stable and unstable scen

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Mean Value Theorems and Properties of Solutions of Linear Differential Equations

Autor: I. P. Polovinkin, M. V. Polovinkina

Publikováno v: Trends in Mathematics ISBN: 9783030359133

This paper describes an accompanying distributions technique that allows to obtain mean value formulas for linear homogeneous partial differential equations. One of these formulas can be interpreted as a generalization of the Asgeirsson principle for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::60b3acff8a1a2807817a27c022760276
https://doi.org/10.1007/978-3-030-35914-0_26

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Space of images of the mixed Riesz hyperbolic B-potential and analytic continuation

Autor: Sergei M. Sitnik, I. P. Polovinkin, Elina Shishkina

Publikováno v: Journal of Inverse and Ill-posed Problems. 27:171-184

In this paper we prove semigroup properties for the mixed Riesz hyperbolic B-potential, find its analytic continuation and describe a space of images of mixed hyperbolic Riesz B-potentials. This problem is closely related to the problem of inversion

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e645abe4cf6cf7a2777e454fd4bd6a1
https://doi.org/10.1515/jiip-2017-0112

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Oscillogram processing algorithm when monitoring cardiac patients’ conditions

Autor: G V Abramov, D G Abramov, I P Polovinkin

Publikováno v: Journal of Physics: Conference Series. 1902:012094

The development of hospital information system requires the improvement of diagnostic and monitoring tools. The tools should provide extensive diagnostics and automatic data processing. In that respect volumetric compression oscillometry is considere

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac0982c6563a24d8cb630919b7e65189
https://doi.org/10.1088/1742-6596/1902/1/012094

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On some concepts of nonlinear dynamics suitable for use in linguistics

Autor: M. V. Polovinkina, M. V. Lometc, I. P. Polovinkin, A. A. Kretov

Publikováno v: Journal of Physics: Conference Series. 1902:012075

In this paper, we describe hypothetical possibilities for applying nonlinear dynamics methods to linguistic research. We suggest to refer to a large text corpus (meta-book of the writer, national language, language of the branch of knowledge) as a fr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b76707bacc35608546944bc876146526
https://doi.org/10.1088/1742-6596/1902/1/012075

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On the Huygens principle in the Puu model

Autor: I. P. Polovinkin, Svetlana A. Rabeeakh, M. V. Polovinkina

Publikováno v: Journal of Physics: Conference Series. 1479:012042

We consider the macroeconomic model of T. Puu, describing the fluctuations of gross income in a given region. With a special combination of savings and investment rates, income deviations will take place only for a finite period of time, after which

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6cdd8074f0598e6d0b6e92bcb333edff
https://doi.org/10.1088/1742-6596/1479/1/012042

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