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We propose a method for designing accurate interpolation formulas on the real axis for the purpose of function approximation in weighted Hardy spaces. In particular, we consider the Hardy space of functions that are analytic in a strip…

Numerical Analysis · Mathematics 2016-06-17 Ken'ichiro Tanaka , Tomoaki Okayama , Masaaki Sugihara

In 1920s R. L. Moore introduced \emph{upper semicontinuous} and \emph{lower semicontinuous} decompositions in studying decomposition spaces. Upper semicontinuous decompositions were studied very well by himself and later by R.H. Bing in…

Algebraic Topology · Mathematics 2020-06-23 Shoji Yokura

An w-limit set of a continuous self-mapping of a compact metric space X is said to be totally periodic if all of its points are periodic. We say that X has the w-FTP property provided that for each continuous self-mapping f of X, every…

Dynamical Systems · Mathematics 2019-03-26 Habib Marzougui , Issam Naghmouchi

The SO(10) embedding of the Standard Model spectrum is supported by evidence for neutrino masses. This thesis adapts the available formalism to study a class of heterotic M-theory vacua with SO(10) grand unification group. Compactification…

High Energy Physics - Theory · Physics 2017-08-23 Richard S. Garavuso

If $\Sigma=(X,\sigma)$ is a topological dynamical system, where $X$ is a compact Hausdorff space and $\sigma$ is a homeomorphism of $X$, then a crossed product Banach $\sp{*}$-algebra $\ell^1(\Sigma)$ is naturally associated with these…

Operator Algebras · Mathematics 2023-05-31 Marcel de Jeu , Jun Tomiyama

We prove that if $X$ and $Y$ are first countable compact Hausdorff spaces, then the set of all diameter-preserving linear bijections from $C(X)$ to $C(Y)$ is algebraically reflexive.

Functional Analysis · Mathematics 2020-04-14 A. Jiménez-Vargas , Fereshteh Sady

In this article we study algebraic stability for rational skew products in two dimensions $\phi : X \dashrightarrow X$, i.e. maps of the form $\phi(x, y) = (\phi_1(x), \phi_2(x, y))$. We prove that when $X$ is a birationally ruled surface…

Dynamical Systems · Mathematics 2024-08-06 Richard A. P. Birkett

Let $(X, D_{X})$ be an arbitrary pointed stable curve of topological type $(g_{X}, n_{X})$ over an algebraically closed field of characteristic $p>0$. We prove that the generalized Hasse-Witt invariants of prime-to-$p$ cyclic admissible…

Algebraic Geometry · Mathematics 2021-03-02 Yu Yang

We construct a complete lattice $Z$ such that the binary supremum function $\sup:Z\times Z\to Z$ is discontinuous with respect to the product topology on $Z\times Z$ of the Scott topologies on each copy of $Z$. In addition, we show that…

Logic in Computer Science · Computer Science 2016-07-15 Peter Hertling

Numerical and analytical results are reviewed, which support SO(5) symmetry as a concept unifying superconductivity and antiferromagnetism in the high-temperature superconductors. Exact cluster diagonalizations verify that the low-energy…

Strongly Correlated Electrons · Physics 2009-10-31 W. Hanke , R. Eder , E. Arrigoni , A. Dorneich , S. Meixner , M. G. Zacher

We give new characterizations of spaces $X$ which are $k_\mathbb{R}$-spaces or $s_\mathbb{R}$-spaces. Applying the obtained results we provide some sufficient and necessary conditions on $X$ for which $C_p(X)$ is a $k_\mathbb{R}$-space or…

General Topology · Mathematics 2025-06-19 Saak Gabriyelyan , Evgenii Reznichenko

We describe the first order moduli space of heterotic string theory compactifications which preserve $N=1$ supersymmetry in four dimensions, that is, the infinitesimal parameter space of the Strominger system. We establish that if we…

High Energy Physics - Theory · Physics 2014-12-02 Xenia de la Ossa , Eirik E. Svanes

Let $X$ be a topological space. We consider certain generalized configuration spaces of points on $X$, obtained from the cartesian product $X^n$ by removing some intersections of diagonals. We give a systematic framework for studying the…

Algebraic Topology · Mathematics 2020-02-19 Dan Petersen

The spaces $W_\alpha$ are the Banach spaces whose duals are isometric to $\ell_1$ and such that the standard basis of $\ell_1$ is $w^*$-convergent to $\alpha\in \ell_1$. The core result of our paper proves that an $\ell_1$-predual $X$…

Functional Analysis · Mathematics 2024-01-11 Emanuele Casini , Enrico Miglierina , Łukasz Piasecki

In this work, we establish several rigidity results for spacelike self-shrinkers immersed in the pseudo-Euclidean space $\mathbb{R}^{n+p}_p$. Under suitable boundedness conditions on either the mean curvature vector or the second…

Differential Geometry · Mathematics 2025-08-19 Weiller F. Chaves Barboza

We derive the cubic defocusing GP hierarchy in ${\mathbb R}^3$ from a bosonic $N$-particle Schr\"odinger equation as $N\rightarrow\infty$, in the strong topology corresponding to the space ${\mathcal H}_\xi^1$ introduced in \cite{chpa}. In…

Mathematical Physics · Physics 2016-01-07 Kenneth Taliaferro , Thomas Chen

The study of the sobriety of Scott spaces has got an relative long history in domain theory. Lawson and Hoffmann independently proved that the Scott space of every continuous directed complete poset (usually called domain) is sober.…

General Topology · Mathematics 2022-05-03 Hualin Miao , Xiaoyong Xi , Qingguo Li , Dongsheng Zhao

Motivated by recent claims, we revisit how coherent perfect absorption (CPA) influences cavity and polaritonic linewidths. Using standard input output theory and measurements on single port bare microwave cavities and cavity magnon hybrids,…

Optics · Physics 2025-10-28 M. Ebrahimi , Y. Huang , A. Rashedi , J. P. Davis

For a completely regular space $X$ and a non-vanishing self-adjoint closed subalgebra $H$ of $C_B(X)$ which separates points from closed sets in $X$ we construct the Gelfand spectrum $\mathfrak{sp}(H)$ of $H$ as an open subspace of the…

Functional Analysis · Mathematics 2018-01-03 M. Farhadi , M. R. Koushesh

The open well-filtered spaces were introduced by Shen, Xi, Xu and Zhao to answer the problem whether every core-compact well-filtered space is sober. In the current paper we explore further properties of open well-filtered spaces. One of…

General Topology · Mathematics 2025-02-25 Chong Shen , Xiaoyong Xi , Dongsheng Zhao