Results 31 to 40 of about 6,647,962 (373)

G3-homogeneous gravitational instantons [PDF]

, 2009
We provide an exhaustive classification of self-dual four-dimensional gravitational instantons foliated with three-dimensional homogeneous spaces, i.e.
Atiyah M F, Barrow J D, Belavin A A, Belinsky V A, Bourliot F Estes J Petropoulos P M Spindel Ph, Darboux G, Eguchi T, F Bourliot, Fay S, Halphen G-H, Halphen G-H, J Estes, Lorenz D, P M Petropoulos, Petropoulos P M, Ph Spindel, Saha B, Spindel Ph, Takhtajan L A   +18 more
core   +2 more sources

Priestley duality for MV-algebras and beyond [PDF]

, 2020
We provide a new perspective on extended Priestley duality for a large class of distributive lattices equipped with binary double quasioperators. Under this approach, non-lattice binary operations are each presented as a pair of partial binary operations
Fussner, Wesley, Gehrke, Mai, Marra, Vincenzo, van Gool, Sam   +3 more
core   +4 more sources

Generalised Veroneseans [PDF]

, 2012
In \cite{ThasHVM}, a characterization of the finite quadric Veronesean $\mathcal{V}_{n}^{2^{n}}$ by means of properties of the set of its tangent spaces is proved. These tangent spaces form a {\em regular generalised dual arc}.
Klein, Andreas, Schillewaert, Jeroen, Storme, Leo   +2 more
core   +3 more sources

Dual Transformations in Galilean Spaces

International Electronic Journal of Geometry, 2020
In this study, we define a dual transformation between $G^{n}$ and $G^{n}_{1}$. We examine the invariance of the plane where the shear motion is acting in Galilean and pseudo-Galilean spaces. We define a dual transformation between $\widehat{G^{n}}$ and $\widehat{G^{n}_{1}}$ as well. We provide applications in $G^{3}$ and $G^{3}_{1}$.
Gülsüm Yüca, Yusuf Yaylı
openaire   +4 more sources

On manimax theory in two Hilbert spaces

International Journal of Mathematics and Mathematical Sciences, 1996
In this paper, we investigated the minimax of the bifunction J:H1(Ω)xV2→RmxRn, such that J(v1,v2)=((12a(v1,v1)−L(v1)),v2) where a(.,.) is a finite symmetric bilinear bicontinuous, coercive form on H1(Ω) and L belongs to the dual of H1(Ω).
E. M. El-Kholy, Hanan Ali Abdou
doaj   +1 more source

Continuous $k$-Fusion Frames in Hilbert Spaces [PDF]

Sahand Communications in Mathematical Analysis, 2020
The study of the c$k$-fusions frames shows that the emphasis on the measure spaces introduces a new idea, although some similar properties with the discrete case are raised. Moreover, due to the nature of measure spaces, we have to use new techniques for
Vahid Sadri, Reza Ahmadi, Mohammad Jafarizadeh, Susan Nami   +3 more
doaj   +1 more source

Pre-Dual of Fofana’s Spaces

Mathematics, 2019
The purpose of this paper is to characterize the pre-dual of the spaces introduced by I. Fofana on the basis of Wiener amalgam spaces. These spaces have a specific dilation behaviour similar to the spaces L α ( R d ) .
Hans G. Feichtinger, Justin Feuto
doaj   +1 more source

A Study of Spaces of Sequences in Fuzzy Normed Spaces

Mathematics, 2021
In this paper, spaces of sequences in fuzzy normed spaces are considered. These spaces are a new concept in fuzzy normed spaces. We develop fuzzy norms for spaces of sequences in fuzzy normed spaces. Especially, we study the representation of the dual of
Ju-Myung Kim, Keun-Young Lee
doaj   +1 more source

Proper conformal symmetries in SD Einstein spaces [PDF]

, 2014
Proper conformal symmetries in self-dual (SD) Einstein spaces are considered. It is shown, that such symmetries are admitted only by the Einstein spaces of the type [N]x[N]. Spaces of the type [N]x[-] are considered in details.
Adam Chudecki, Michał Dobrski, Newman E. T., Newman E. T., Plebański J. F.   +4 more
core   +2 more sources

A new double series space derived by factorable matrix and four-dimensional matrix transformations

AIMS Mathematics
In this study, we introduce a new double series space $ \left\vert F_{a, b}^{u, \theta }\right\vert _{k} $ using the four dimensional factorable matrix $ F $ and absolute summability method for $ k\geq 1 $.
Aslıhan ILIKKAN CEYLAN , Canan HAZAR GÜLEÇ   +1 more
doaj   +1 more source