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We introduce the mixed Bourgain-Morrey spaces and obtain their preduals. The boundedness of Hardy-Littlewood maximal operator, iterated maximal operator, fractional integral operator, singular integral operator on these spaces is proved. In…

Functional Analysis · Mathematics 2026-03-17 Tengfei Bai , Pengfei Guo , Jingshi Xu

In this paper we establish mixed weak inequalities of Fefferman-Stein type for Calder\'on-Zygmund operators and their commutators, improving some previous results known in the literature. The main estimates also generalize the classical…

Classical Analysis and ODEs · Mathematics 2025-11-20 Rocío Ayala , Fabio Berra , Gladis Pradolini

Iterated commutators of multilinear Calderon-Zygmund operators and pointwise multiplication with functions in $BMO$ are studied in products of Lebesgue spaces. Both strong type and weak end-point estimates are obtained, including weighted…

Classical Analysis and ODEs · Mathematics 2015-03-17 Carlos Perez , Gladis Pradolini , Rodolfo Torres , Rodrigo Trujillo-Gonzalez

Multiparameter maximal estimates are considered for operators of Schr\"odinger type. Sharp and almost sharp results, that extend work by Rogers and Villarroya, are obtained. We provide new estimates via the integrability of the kernel which…

Analysis of PDEs · Mathematics 2013-05-15 Per Sjölin , Fernando Soria

Several spectra of analytically Riesz operators will be characterized. These results will led to prove Weyl and Browder type theorems for the aforementioned class of operators.

Functional Analysis · Mathematics 2015-07-21 Enrico Boasso

We study resolvent estimates, spectral theory and long time dispersive properties of scalar and matrix Schr\"odinger-type operators on $\mathbb{H}^{n+1}$ for $n \geq 1$.

Analysis of PDEs · Mathematics 2015-09-02 David Borthwick , Jeremy L. Marzuola

In this paper, we introduce two new forms of the dual Hartwig-Spindelb{\"o}ck decomposition and employ them to derive explicit representations for several classes of dual generalized inverses. Building on these representations, we further…

Rings and Algebras · Mathematics 2026-02-10 Tan Mei , Kezheng Zuo , Hui Yan

We develope new lower bounds for the $A$-numerical radius of semi-Hilbertian space operators, and applying these bounds we obtain upper bounds for the $A$-numerical radius of the commutators of operators. The bounds obtained here improve on…

Functional Analysis · Mathematics 2024-08-14 Pintu Bhunia , Kallol Paul

Rota-Baxter operators are an algebraic abstraction of integration. Following this classical connection, we study the relationship between Rota-Baxter operators and integrals in the case of the polynomial algebra $\mathbf{k}[x]$. We consider…

Rings and Algebras · Mathematics 2016-01-20 Li Guo , Markus Rosenkranz , Shanghua Zheng

Recent results on the construction and applications of the transmutation (transformation) operators are discussed. Three new representations for solutions of the one-dimensional Schr\"odinger equation are considered. Due to the fact that…

Classical Analysis and ODEs · Mathematics 2017-08-03 Vladislav V. Kravchenko , Sergii M. Torba , Kira V. Khmelnytskaya

In this paper we study a generalization of the classical Rarita-Schwinger type operators and construct their fundamental solutions. We give some basic integral formulas related to these operators. We also establish that the projection…

Complex Variables · Mathematics 2012-11-01 Charles F. Dunkl , Junxia Li , John Ryan , Peter Van Lancker

We study singular Schr\"odinger operators on a finite interval as selfadjoint extensions of a symmetric operator. We give sufficient conditions for the symmetric operator to be in the $n$-entire class, which was defined in our previous…

Mathematical Physics · Physics 2013-09-10 Luis O. Silva , Julio H. Toloza

The methods of integral operators on the cohomology of Hilbert schemes of points on surfaces are developed. They are used to establish integral bases for the cohomology groups of Hilbert schemes of points on a class of surfaces (and…

Algebraic Geometry · Mathematics 2007-05-23 Zhenbo Qin , Weiqiang Wang

In this paper, we give necessary and sufficient conditions for the boundedness of rough Hausdorff operators on Herz, Morrey and Morrey-Herz spaces with absolutely homogeneous weights. Especially, the estimates for operator norms in each…

Functional Analysis · Mathematics 2018-07-25 Nguyen Minh Chuong , Dao Van Duong , Nguyen Duc Duyet

We introduce the class of weighted "rotation-like" operators and study general properties of essential spectra of such operators. Then we use this approach to investigate and in some cases completely describe essential spectra of weighted…

Functional Analysis · Mathematics 2019-05-22 Arkady Kitover , Mehmet Orhon

This paper deals with eigenvalues and eigenvectors of bicomplex linear operators defined on bicomplex space. We investigate the properties of these operators in the context of eigenvalues and eigenvectors, along with some relevant theorems.…

Representation Theory · Mathematics 2025-03-25 Anjali Anjali , Akhil Prakash , Amita , Prabhat Kumar

We compute conformally covariant actions and operators for tensors with mixed symmetries in arbitrary dimension $d$. Our results complete the classification of conformal actions that are quadratic on arbitrary tensors with three indices,…

High Energy Physics - Theory · Physics 2024-01-25 Gregorio Paci , Dario Sauro , Omar Zanusso

Representations of polynomial covariant type commutation relations by pairs of linear integral operators and multiplication operators on Banach spaces $L_p$ are constructed.

Functional Analysis · Mathematics 2023-05-18 Domingos Djinja , Sergei Silvestrov , Alex Behakanira Tumwesigye

In this article, we study properties of multilinear Fourier integral operators on weighted modulation spaces. In particular, using the theory of Gabor frames, we study boundedness of multilinear Fourier integral operators on products of…

Functional Analysis · Mathematics 2023-02-22 Aparajita Dasgupta , Lalit Mohan , Shyam Swarup Mondal

This is the second half of a two-part series studying tensor categories of unitary vertex operator algebras from a unitary point of view.

Quantum Algebra · Mathematics 2019-11-26 Bin Gui
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