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Related papers: Orlicz Spaces with Bicomplex Scalars

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The paper presents estimates for the number of negative eigenvalues of a two-dimensional Schr\"odinger operator in terms of $L\log L$ type Orlicz norms of the potential and proves a conjecture by N.N. Khuri, A. Martin and T.T. Wu.

Spectral Theory · Mathematics 2014-02-26 Eugene Shargorodsky

In this paper we define $\lambda$-hyponormal operators on an infinite dimensional Hilbert space $\mathcal{H}$ and find a class of $\lambda$-hyponormal operators that can not be hypercyclic. Also, we study closedness of range and…

Functional Analysis · Mathematics 2025-08-07 Y. Estaremi , M. S. Al Ghafri , and S. Shamsigamchi

We study the Ornstein-Uhlenbeck operator and the Ornstein-Uhlenbeck semigroup in an open convex subset of an infinite dimensional separable Banach space $X$. This is done by finite dimensional approximation. In particular we prove…

Analysis of PDEs · Mathematics 2017-09-12 Gianluca Cappa

The aim of this paper is to discuss the characterizations of the composition operators on Orlicz-Lorentz space to have finite ascent (or descent).

Functional Analysis · Mathematics 2023-07-24 Neha Bhatia , Anuradha Gupta

In this article, we study certain transcendental function spaces arising in potential theory within the framework of Orlicz spaces. Specifically, we generalize Bessel and Lizorkin-Triebel spaces to the nonstandard setting of Orlicz spaces.…

Analysis of PDEs · Mathematics 2026-04-21 Pablo Ochoa , Ariel Salort

In this article we develop the theory of $H$-Orlicz space generated by generalised Young function. Modular convergence of $H$-Orlicz space for the case of vector-valued functions and norm convergence in $\mcH^\theta(X, \bar{\mu})$ where $X$…

Functional Analysis · Mathematics 2022-06-07 Hemanta Kalita , Bipan Hazarika

We study the spectrum of two kinds of operators involving a conical geometry: the Dirichlet Laplacian in conical layers and Schr\"odinger operators with attractive $\delta$-interactions supported by infinite cones. Under the assumption that…

Spectral Theory · Mathematics 2020-06-23 Thomas Ourmières-Bonafos , Konstantin Pankrashkin

The main purpose is to introduce the so-called bicomplex (bc)-frames which is a special extension to bicomplex infinite Hilbert spaces of the classical frames. The crucial result is the characterization of bc-frames in terms of their…

Functional Analysis · Mathematics 2020-01-22 Aiad El Gourari , Allal Ghanmi , Mohammed Souid El Ainin

In this paper we study some basic properties of bicomplex linear operators on bicomplex Hilbert spaces. Further we discuss some applications of Hahn-Banach theorem on bicomplex Banach modules. We also introduce and discuss some bicomplex…

Functional Analysis · Mathematics 2014-06-02 Romesh Kumar , Kulbir Singh

In this paper we examine boundedness of fractional maximal operator. The main focus is on commutators and maximal commutators on generalized Orlicz spaces for fractional maximal functions and Riesz potentials. We prove their boundedness…

Functional Analysis · Mathematics 2021-06-16 Arttu Karppinen

In this paper we give new characterizations of Riesz and conditional Riesz frames in terms of the properties of the nullspace of their synthesis operators. On the other hand, we also study the oblique dual frames whose coefficients in the…

Functional Analysis · Mathematics 2015-06-26 Jorge Antezana , Gustavo Corach , Mariano Ruiz , Demetrio Stojanoff

We discuss some properties of linear functionals on topological hyperbolic and topological bicomplex modules. The hyperbolic and bicomplex analogues of the uniform boundedness principle, the open mapping theorem, the closed graph theorem…

Functional Analysis · Mathematics 2018-09-14 Heera Saini Aditi Sharma , Romesh Kumar

In this article we investigate the Fourier series and transforms for the functions defined on the $ [0, 2 \pi]^ d $ or $ R^d $ and belonging to the exponential Orlicz and some other rearrangement invariant (r.i.) spaces.

Functional Analysis · Mathematics 2007-05-23 E. Ostrovsky , L. Sirota

The full one sided shift space over finite symbols is approximated by an increasing sequence of finite subsets of the space. The Laplacian on the space is then defined as a renormalised limit of the difference operators defined on these…

Dynamical Systems · Mathematics 2019-09-09 Shrihari Sridharan , Sharvari Neetin Tikekar

The main focus of this paper is commutators and maximal commutators on Orlicz spaces for fractional maximal functions and Riesz potential. The main advance in comparison with the existing results is that we manage to obtain conditions for…

Functional Analysis · Mathematics 2023-09-06 Vagif S. Guliyev , Fatih Deringoz , Sabir G. Hasanov

The norm in classical Sobolev spaces can be expressed as a difference quotient. This expression can be used to generalize the space to the fractional smoothness case. Because the difference quotient is based on shifting the function, it…

Functional Analysis · Mathematics 2020-08-06 Rita Ferreira , Peter Hästö , Ana Margarida Ribeiro

Let $\bold{\Phi}=(\phi_n)$ be a Musielak-Orlicz function, $X$ be a real Banach space and $A$ be any infinite matrix. In this paper, a generalized vector-valued Musielak-Orlicz sequence space $l_{\bold {\Phi}}^{A}(X)$ is introduced. It is…

Functional Analysis · Mathematics 2014-08-18 Amit Maji , P. D. Srivastava

We study the two-dimensional Dirac operator with an arbitrary combination of electrostatic and Lorentz scalar $\delta$-interactions of constant strengths supported on a smooth closed curve. For any combination of the coupling constants a…

Analysis of PDEs · Mathematics 2020-07-21 Jussi Behrndt , Markus Holzmann , Thomas Ourmières-Bonafos , Konstantin Pankrashkin

Boundedness and compactness properties of multiplication operators on quantum (non-commutative) function spaces are investigated. For endomorphic multiplication operators these properties can be characterized in the setting of quantum…

Operator Algebras · Mathematics 2019-07-25 Pierre de Jager , Louis Labuschagne

We discuss variants of construction of measurable subgradients for multivariate convex functions and the problem of characterization of the $\Delta_2$-condition in terms of their directional derivatives. Furthermore we study related basic…

Functional Analysis · Mathematics 2026-04-15 Sergey G. Bobkov , Friedrich Götze
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