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pro vyhledávání: '"Artamoshin, Sergei"'
Autor:
Artamoshin, Sergei
We study a $(k+1)$-dimensional hyperbolic space of a negative constant sectional curvature $\kappa=-1/\rho^2$. Let $\lambda$ be a real eigenvalue and $f_{\lambda} (x)$ be an eigenfunction of the hyperbolic Laplacian assuming a non-zero value at $x_0$
Externí odkaz:
http://arxiv.org/abs/1902.08987
Autor:
Artamoshin, Sergei
Let us fix two different radial eigenfunctions of a hyperbolic Laplacian and assume that both of them have the same value at the origin. Both eigenvalues can be complex numbers. The main goal of this paper is to estimate the lower bound for the inter
Externí odkaz:
http://arxiv.org/abs/1411.4288
Autor:
Artamoshin, Sergei
At the end of 19-th century, 1874, Hermann Schwartz found that for every point inside a planar disk, a two-dimensional Poisson Kernel can be written as a ratio of two segments, which he called as the geometric interpretation of that Kernel \cite{Schw
Externí odkaz:
http://arxiv.org/abs/1411.1915
Autor:
Artamoshin, Sergei
In this paper we consider a domain in a space of negative constant sectional curvature. Such assumption about the sectional curvature let us develop a new technique and improve existing lower bounds of eigenvalues from Dirichlet eigenvalue problem, o
Externí odkaz:
http://arxiv.org/abs/1410.4490
Autor:
Artamoshin, Sergei
Hermann Schwarz, while studying complex analysis, introduced the geometric interpretation for the Poisson kernel in 1890. We shall see here that the geometric interpretation can be useful to develop a new approach to some old classical problems as we
Externí odkaz:
http://arxiv.org/abs/0912.0223
Autor:
Artamoshin, Sergei
Meyer, Christian: (K)eine Grenze. Das Private und das Politische im Nationalsozialismus 1933-1940 – (Quellen und Darstellungen zur Zeigeschichte, hrsg.v. Institut für Zeitgeschichte). – Berlin/Boston: Walter de Gruyter-Oldenbourg, 2022. – 324
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bba3f8daeae1d763502f7047ebccde59
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