Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Viktoriia Bilet"'
Autor:
Viktoriia Bilet, Oleksiy Dovgoshey
Publikováno v:
Frontiers in Applied Mathematics and Statistics, Vol 10 (2024)
Let X be a class of metric spaces and let PX be the set of all f : [0, ∞) → [0, ∞) preserving X, i.e., (Y, f ∘ ρ) ∈ X whenever (Y, ρ) ∈ X. For arbitrary subset A of the set of all metric preserving functions, we show that the equality P
Externí odkaz:
https://doaj.org/article/70aacfa875914ebd975c3b2aa12b7aa4
Autor:
Viktoriia Bilet, Oleksiy Dovgoshey
Publikováno v:
Theory and Applications of Graphs, Vol 5, Iss 2 (2018)
Let $(X, d)$ be an unbounded metric space and let $\tilde r=(r_n)_{n\in\mathbb N}$ be a sequence of positive real numbers tending to infinity. A pretangent space $\Omega_{\infty, \tilde r}^{X}$ to $(X, d)$ at infinity is a limit of the rescaling sequ
Externí odkaz:
https://doaj.org/article/fed71bdafaa04fab9a14123081c8ec57
Autor:
Elena S. Afanas’eva, Viktoriia Bilet
Publikováno v:
Journal of Mathematical Sciences. 258:265-275
A relation between 𝜂-quasi-symmetric homomorphisms and K-quasiconformal mappings on n-dimensional smooth connected Riemannian manifolds has been studied. The main results of the research are presented in Theorems 2.6 and 2.7. Several conditions fo
Autor:
Elena Afanas'eva, Viktoriia Bilet
Publikováno v:
Ukrainian Mathematical Bulletin. 18:145-159
A relation between $\eta$-quasi-symmetric homomorphisms and $K$-quasiconformal mappings on $n$-dimensional smooth connected Riemannian manifolds has been studied. The main results of the research are presented in Theorems 2.6 and 2.7. Several conditi
Autor:
Viktoriia Bilet, Oleksiy Dovgoshey
Publikováno v:
Journal of Mathematical Sciences. 242:360-380
Let X be an unbounded metric space, and let $$ \tilde{r} $$ be a sequence of positive real numbers tending to infinity. We define the pretangent space $$ {\Omega}_{\infty, \tilde{r}}^X $$ to X at infinity as a metric space whose points are the equiva
Autor:
Rashid Matkarimov, Georgiy Korobeynikov, Yrui Tropin, Viktoriia Biletska, David Curby, Milorad Dokmanac, Fikrat Kerimov
Publikováno v:
Слобожанський науково-спортивний вісник, Vol 28, Iss 1, Pp 38-43 (2024)
Background and Study: Spectacle plays a key role in sports wrestling in attracting viewers' attention, creating emotional involvement, and making the sport an integral part of culture. Aim: To identify the most significant indicators of wrestlers' co
Externí odkaz:
https://doaj.org/article/98ef5e9483254f7eb1d58635dd646e1b
Let $WS(X, d)$ be the class of ultrametric spaces which are weakly similar to ultrametric space $(X, d)$. The main results of the paper completely describe the ultrametric spaces $(X, d)$ for which the equality $$ \rho(x, y) = f(d(\Phi(x), \Phi(y)))
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e70ee8c7a0ba04a4275f350dbb85be24
http://arxiv.org/abs/2011.07327
http://arxiv.org/abs/2011.07327
Publikováno v:
Наукові вісті Національного технічного університету України "Київський політехнічний інститут", Vol 0, Iss 4, Pp 7-16 (2017)
Наукові вісті НТУУ «КПІ» : міжнародний науково-технічний журнал, 2017, № 4(114)
"""Research Bulletin of the National Technical University of Ukraine """"Kyiv Politechnic Institute"""""""
"Research Bulletin of the National Technical University of Ukraine ""Kyiv Politechnic Institute"""
Наукові вісті НТУУ «КПІ» : міжнародний науково-технічний журнал, 2017, № 4(114)
"""Research Bulletin of the National Technical University of Ukraine """"Kyiv Politechnic Institute"""""""
"Research Bulletin of the National Technical University of Ukraine ""Kyiv Politechnic Institute"""
We investigate some conditions under which the Lebesgue constants or Lebesgue functions are bounded for the classical Lagrange polynomial interpolation on a compact subset of $\mathbb R$. In particular, relationships of such boundedness with uniform
Autor:
Viktoriia Bilet, Oleksiy Dovgoshey
Publikováno v:
Reports of the National Academy of Sciences of Ukraine. :9-14
A new sequential approach to investigations of structure of metric spaces at infinity is proposed. Criteria for finiteness and boundedness of metric spaces at infinity are found.
7 pages
7 pages
Publikováno v:
Czechoslovak Mathematical Journal. 65:713-737
Let $SP$ be the set of upper strongly porous at $0$ subsets of $\mathbb R^{+}$ and let $\hat I(SP)$ be the intersection of maximal ideals $I \subseteq SP$. Some characteristic properties of sets $E\in\hat I(SP)$ are obtained. It is shown that the ide