Results 31 to 40 of about 5,722,301 (356)

Homogeneous Ultrametric Spaces

open access: yesJournal of Algebra, 1996
Fortsetzung von zwei vorangehenden Arbeiten über verallgemeinerte ultrametrische Räume [the authors, Generalized ultrametric spaces I, Abh. Math. Semin. Univ. Hamb. 66, 55-73 (1996); and Part II (1997)]. Es wird der Begriff des homogenen ultrametrischen Raumes eingeführt [the authors, C. R. Math. Acad. Sci., Soc. R. Can. 18, 1-16 (1996; Zbl 0853.54029)]
Priess-Crampe, S., Ribenboim, P.
openaire   +1 more source

Multilinear strongly singular integral operators on non-homogeneous metric measure spaces

open access: yesJournal of Inequalities and Applications, 2022
Let ( X , d , μ ) $(X,d,\mu )$ be a non-homogeneous metric measure space satisfying the geometrically and upper doubling measure conditions. In this paper, the boundedness in Lebesgue spaces for multilinear strongly singular integral operators on non ...
Hailian Wang, Rulong Xie
doaj   +1 more source

The elementary obstruction and homogeneous spaces [PDF]

open access: yes, 2008
Let $k$ be a field of characteristic zero and ${\bar k}$ an algebraic closure of $k$. For a geometrically integral variety $X$ over $k$, we write ${\bar k}(X)$ for the function field of ${\bar X}=X\times_k{\bar k}$.
Borovoi, M.   +2 more
core   +1 more source

A Complete Real-Variable Theory of Hardy Spaces on Spaces of Homogeneous Type [PDF]

open access: yesJournal of Fourier Analysis and Applications, 2018
Let $$(X,d,\mu )$$(X,d,μ) be a space of homogeneous type, with the upper dimension $$\omega $$ω, in the sense of Coifman and Weiss. Assume that $$\eta $$η is the smoothness index of the wavelets on X constructed by Auscher and Hytönen.
Ziyi He   +5 more
semanticscholar   +1 more source

Strongly homogeneous spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1975
Spaces satisfying various conditions have previously been called strongly homogeneous spaces and many results about the group of homeomorphisms of such spaces have been proved. However spaces may satisfy some “strongly homogeneous” condition without being homogeneous.
openaire   +1 more source

Some geometrical properties of 4D homogeneous pseudo-Riemannian space with trivial isotropy [PDF]

open access: yesریاضی و جامعه, 2022
In this paper, we first consider $4D$ conformally flat homogeneous pseudo-Riemannian space with trivial isotropy, then, we investigate some geometrical properties such as being Ricci solitons and Walker on the spaces under consideration.
Yadollah Aryanejad
doaj   +1 more source

The Grunwald problem and approximation properties for homogeneous spaces [PDF]

open access: yes, 2015
Given a group $G$ and a number field $K$, the Grunwald problem asks whether given field extensions of completions of $K$ at finitely many places can be approximated by a single field extension of $K$ with Galois group G. This can be viewed as the case of
C. Demarche, G. Arteche, D. Neftin
semanticscholar   +1 more source

A note on homogeneous Sobolev spaces of fractional order [PDF]

open access: yesAnnali di Matematica Pura ed Applicata, 2018
We consider a homogeneous fractional Sobolev space obtained by completion of the space of smooth test functions, with respect to a Sobolev–Slobodeckiĭ norm.
L. Brasco, A. Salort
semanticscholar   +1 more source

Geodesic vectors of square metrics on 5- dimensional generalized symmetric spaces [PDF]

open access: yesریاضی و جامعه
In this paper, we consider the $(\alpha, \beta)$-metric $F=\frac{(\alpha + \beta)^2}{\alpha}$ along with the function $\phi$ with the definition of $\phi(s)=1+2s+s^2$, which is known as a square metric, on 5-dimensional generalized symmetric spaces. Then
Dariush Latifi, Milad Zeinali
doaj   +1 more source

On Degenerate 3-(α, δ)-Sasakian Manifolds

open access: yesComplex Manifolds, 2022
We propose a new method to construct degenerate 3-(α, δ)-Sasakian manifolds as fiber products of Boothby-Wang bundles over hyperkähler manifolds. Subsequently, we study homogeneous degenerate 3-(α, δ)-Sasakian manifolds and prove that no non-trivial ...
Goertsches Oliver   +2 more
doaj   +1 more source

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