Results 61 to 70 of about 4,893,677 (289)

A new construction of universal spaces for asymptotic dimension [PDF]

open access: yes, 2017
For each n, we construct a separable metric space U n that is universal in the coarse category of separable metric spaces with asymptotic dimension (asdim) at most n and universal in the uniform category of separable metric spaces with uniform dimension (
G. Bell, A. Nagórko
semanticscholar   +1 more source

Property A and asymptotic dimension

open access: yesGlasnik matematički, 2012
3 ...
Cencelj, Matija   +2 more
openaire   +4 more sources

Classification of metric spaces with infinite asymptotic dimension [PDF]

open access: yes, 2017
We introduce a geometric property complementary-finite asymptotic dimension (coas- dim). Similar with asymptotic dimension, we prove the corresponding coarse invariant theorem, union theorem and Hurewicz-type theorem.
Yan Wu, Jing-Ming Zhu
semanticscholar   +1 more source

Quasinormal Modes of a Charged Black Hole with Scalar Hair

open access: yesUniverse, 2023
Based on the five-dimensional Einstein–Maxwell theory, Bah et al. constructed a singularity-free topology star/black hole [Phys. Rev. Lett. 126, 151101 (2021)].
Wen-Di Guo, Qin Tan
doaj   +1 more source

Asymptotic and bootstrap tests for subspace dimension

open access: yesJournal of Multivariate Analysis, 2022
Most linear dimension reduction methods proposed in the literature can be formulated using an appropriate pair of scatter matrices, see e.g. Ye and Weiss (2003), Tyler et al. (2009), Bura and Yang (2011), Liski et al. (2014) and Luo and Li (2016). The eigen-decomposition of one scatter matrix with respect to another is then often used to determine the ...
Oja, Hannu   +3 more
openaire   +7 more sources

Dimensionality reduction of a dynamic wind turbine model

open access: yesВестник Самарского университета: Естественнонаучная серия
The article examines a mathematical model of a small wind power plant with a vertical axis of rotation, known as the Darye wind turbine. The paper considers the transition from a three-time differential system of equations to a two-time system, which ...
A. S. Kirsanova
doaj   +1 more source

A covariance matrix test for high-dimensional data [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2016
For the multivariate normally distributed data with the dimension larger than or equal to the number of observations, or the sample size, called high-dimensional normal data, we proposed a test for testing the null hypothesis that the covariance matrix
Saowapha Chaipitak, Samruam Chongcharoen
doaj   +1 more source

The asymptotic dimension of quotients by finite groups [PDF]

open access: yes, 2016
Let $X$ be a proper metric space and let $F$ be a finite group acting on $X$ by isometries. We show that the asymptotic dimension of $F\backslash X$ is the same as the asymptotic dimension of $X$.
Daniel Kasprowski
semanticscholar   +1 more source

Asymptotic dimension, property A, and Lipschitz maps [PDF]

open access: yesRevista Matemática Complutense, 2012
It is well-known that a paracompact space X is of covering dimension n if and only if any map f from X to a simplicial complex K can be pushed into its n-skeleton. We use the same idea to define dimension in the coarse category. It turns out the analog of maps f from X to K is related to asymptotically Lipschitz maps, the analog of paracompact spaces ...
Cencelj, M., Dydak, J., Vavpetič, A.
openaire   +2 more sources

AdS3 holography at dimension two

open access: yesJournal of High Energy Physics, 2019
Holography can provide a microscopic interpretation of a gravitational solution as corresponding to a particular CFT state: the asymptotic expansion in gravity encodes the expectation values of operators in the dual CFT state.
Stefano Giusto   +2 more
doaj   +1 more source

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