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It is shown how one can define vector topological charges for topological exitations of non-linear sigma-models on compact homogeneous spaces T_G and G/T_G (where G is a simple compact Lie group and T_G is its maximal commutative subgroup).…

High Energy Physics - Theory · Physics 2009-10-31 S. A. Bulgadaev

The definition of classical holomorphic function spaces such as the Hardy space or the Dirichlet space on the Hartogs triangle is not canonical. In this paper we introduce a natural family of holomorphic function spaces on the Hartogs…

Complex Variables · Mathematics 2021-01-01 Alessandro Monguzzi

The soft topological spaces and some their related concepts have stud- ied in [7]. In this paper, we introduce and study the notions of soft connected topological spaces after a review of preliminary definitions.

General Topology · Mathematics 2012-02-09 E. Peyghan , B. Samadi , A. Tayebi

In math.SG/0303255, we discussed the connected components of the space of surface group representations for any compact connected semisimple Lie group and any closed compact (orientable or nonorientable) surface. In this sequel, we…

Symplectic Geometry · Mathematics 2007-05-23 Nan-Kuo Ho , Chiu-Chu Melissa Liu

This is an expository article which describes one approach to the construction and classification of harmonic tori "of finite type", namely, via their ring of polynomial Killing fields. To keep the discussion focussed, the first section is…

Differential Geometry · Mathematics 2014-09-16 I McIntosh

We give an algebraic geometric compactification of certain moduli spaces of semistable E-pairs in the sense of Yokogawa. In particular, we obtain a compactification of the moduli spaces of semistable Higgs pairs on a curve which were…

alg-geom · Mathematics 2008-02-03 Alexander Schmitt

We characterize the pairs of operator spaces which occur as pairs of Morita equivalence bimodules between non-selfadjoint operator algebras in terms of the mutual relation between the spaces. We obtain a characterization of the operator…

Operator Algebras · Mathematics 2007-05-23 I. G. Todorov

The purpose of this paper is to establish some characterizations of mixed central Campanato space $\mathfrak{C}^{\vec{p},\lambda}(\mathbb{R}^{n})$, via the boundedness of the commutator operators of Hardy type. Unlike the case…

Functional Analysis · Mathematics 2023-09-01 Wenna Lu , Jiang Zhou

In his paper [Concrete representation of abstract $(M)$-spaces. (A characterization of the space of continuous functions.), Ann. of Math., $42 (2)$ ($1941$), $994$--$1024$.], S. Kakutani gave an interesting representation of the closed…

Functional Analysis · Mathematics 2023-01-19 Teena Thomas

We characterize 1-complemented subspaces of finite codimension in strictly monotone one-$p$-convex, $2<p<\infty,$ sequence spaces. Next we describe, up to isometric isomorphism, all possible types of 1-unconditional structures in sequence…

Functional Analysis · Mathematics 2016-09-06 Beata Randrianantoanina

The classifying spaces of cobordisms of singular maps have two fairly different constructions. We expose a homotopy theoretical connection between them. As a corollary we show that the classifying spaces in some cases have a simple product…

Geometric Topology · Mathematics 2019-02-27 András Szűcs , Tamás Terpai

This article is an expository paper. We first survey developments over the past three decades in the theory of harmonic analysis on reductive symmetric spaces. Next we deal with the particular homogeneous space of non-reductive type, the so…

Number Theory · Mathematics 2007-05-23 Jae-Hyun Yang

In this note, we give a new characterization for an algebra to be $\qo$-compact in terms of {\em super-product operations} on the lattice of congruences of the relative free algebra.

Logic · Mathematics 2015-08-04 M. Shahryari

We consider matrix problems in Hilbert spaces (orthoscalar representations of quivers and posets). A criterion of tameness of the problem of classification of indecomposable orthoscalar representations of a quiver is given.

Representation Theory · Mathematics 2007-05-23 A. V. Roiter , S. A. Kruglyak , L. A. Nazarova

We discuss discrete Morrey spaces and their generalizations, and we prove necessary and sufficient conditions for the inclusion property among these spaces through an estimate for the characteristic sequences.

Functional Analysis · Mathematics 2021-05-13 Hendra Gunawan , Eder Kikianty , Christopher Schwanke

In \cite{Chaber}, Chaber has proved that countably compact spaces with a quasi $G_{\delta }$-diagonal are compact. We prove that initially $\kappa $% -compact spaces with a quasi $G_{\kappa }$-diagonal are compact, for any infinite cardinal…

General Topology · Mathematics 2017-05-02 Çetin Vural

We present examples, both compact and non-compact complete, of lo- cally non-homogeneous proper A-manifolds.

Differential Geometry · Mathematics 2008-02-19 Wlodzimierz Jelonek

We analyze the embedding properties between Besov spaces, defined on the total space $\mathbb R^n$ and on bounded domains. We give a complete classification on whether or not these embedding maps satisfy certain weak compactness…

Functional Analysis · Mathematics 2025-09-26 Chian Yeong Chuah , Jan Lang , Liding Yao

A discussion of homotopy limits of (1-)stacks, with an emphasis on fixed point stacks.

Algebraic Geometry · Mathematics 2022-01-03 R. Virk

We prove that it is consistent with large values of the continuum that there are no S-spaces. We also show that we can also have that compact separable spaces of countable tightness have cardinality at most the continuum.

Logic · Mathematics 2022-06-23 Alan Dow , Saharon Shelah