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In this paper a large class of universal windows for Gabor frames (Weyl-Heisenberg frames) is constructed. These windows have the fundamental property that every overcritical rectangular lattice generates a Gabor frame. Likewise, every…

Information Theory · Computer Science 2013-08-14 Severin Bannert , Karlheinz Gröchenig , Joachim Stöckler

Generalized integral formulas involving the generalized Bessel-Maitland function are considered and it expressed in terms of generalized Wright hypergeometric functions. By assuming appropriate values of the parameters in the main results,…

Classical Analysis and ODEs · Mathematics 2016-05-31 M. S. Abouzaid , A. H. Abusufian , K. S. Nisar

We introduce the notion of a cross-frame potential function, which takes one frame as input and returns its cross-frame potential value with respect to another frame. We analyze the behavior of this new function to determine what…

Functional Analysis · Mathematics 2022-11-11 Roza Aceska , McKenna Kaczanowski

We announce results on a compactification of general character varieties that has good topological properties and give various interpretations of its ideal points. We relate this to the Weyl chamber length compactification and apply our…

Geometric Topology · Mathematics 2020-05-04 Marc Burger , Alessandra Iozzi , Anne Parreau , Marie Beatrice Pozzetti

An explicit expression for the Kohn-Nirenberg symbol of a Weyl- Heisenberg frame operator on $L^2(\mathbb{R})$ is obtained directly from the Gabor atom coming from new classes of window functions. This new approach, using only elementary…

Functional Analysis · Mathematics 2020-08-13 T. C. Easwaran Nambudiri , K. Parthasarathy

We discuss and prove a number of results for calculating characteristic cycles, or graded, enriched characteristic cycles. We concentrate particularly on results related to hypersurfaces.

Algebraic Geometry · Mathematics 2016-11-16 David B. Massey

Nous obtenons une formule pour les valeurs de la fonction caract\'eristique d'un faisceau caract\`ere en fonction de la th\'eorie des repr\'esentations de certains groupes finis, li\'es au groupe de Weyl. Cette formule, qui g\'en\'eralise…

Representation Theory · Mathematics 2008-10-29 Pramod N. Achar , Anne-Marie Aubert

Heisenberg-Weyl operators provide a Hermitian generalization of Pauli operators in higher dimensions. Positive maps arising from Heisenberg-Weyl operators have been studied along with several algebraic and spectral properties of…

Mathematical Physics · Physics 2025-06-06 Saikat Patra , Bihalan Bhattacharya

Gel'fand triples of test and generalized functionals in Gaussian spaces are constructed and characterized.

Functional Analysis · Mathematics 2007-05-23 Yu. G. Kondratiev , P. Leukert , J. Potthoff , L. Streit , W. Westerkamp

Based on Colombeau's theory of algebras of generalized functions we introduce the concepts of generalized functions taking values in differentiable manifolds as well as of generalized vector bundle homomorphisms. We study their basic…

Functional Analysis · Mathematics 2007-05-23 Michael Kunzinger

New realizations of finite W algebras are constructed by relaxing the usual constraint conditions. Then, finite W algebras are recognized in the Heisenberg quantization recently proposed by Leinaas and Myrheim, for a system of two identical…

High Energy Physics - Theory · Physics 2009-10-28 F. Barbarin , E. Ragoucy , P. Sorba

In this paper we give the functional characteristics of the Rothberger and Menger properties.

General Topology · Mathematics 2018-05-29 Alexander V. Osipov

In this paper we give a method, based on the characteristic function of a set, to solve some difficult problems of set theory in undergraduate research.

General Mathematics · Mathematics 2007-07-23 Mihaly Bencze , Florentin Smarandache

Based on the generalized Boltzmann equation and the reverse function of the distribution function, we investigate the two-parameter generalized statistics and get an expression between the two parameters (k,r) and the physical quantities…

Statistical Mechanics · Physics 2015-08-10 Lina Guo , Jiulin Du

A Borg-Marchenko type uniqueness theorem (in terms of the Weyl function) is obtained here for the system auxiliary to the N-wave equation. A procedure to solve inverse problem is used for this purpose. The asymptotic condition on the Weyl…

Mathematical Physics · Physics 2008-03-18 Alexander Sakhnovich

In this paper, we study spectral properties of generalized weighted Hilbert matrices. In particular, we establish results on the spectral norm, determinant, as well as various relations between the eigenvalues and eigenvectors of such…

Spectral Theory · Mathematics 2013-03-06 Emmanuel Preissmann , Olivier Leveque

Given a positive weight function and an isometry map on a Hilbert spaces $\mathcal{H}$, we study a class of linear maps which is a $g$-frame, $g$-Riesz basis and a $g$-orthonormal basis for $\mathcal{H}$ with respect to $\mathbb{C}$ in…

Functional Analysis · Mathematics 2020-04-09 Anirudha Poria

Finite frames can be viewed as mass points distributed in $N$-dimensional Euclidean space. As such they form a subclass of a larger and rich class of probability measures that we call probabilistic frames. We derive the basic properties of…

Probability · Mathematics 2017-09-04 Martin Ehler , Kasso A. Okoudjou

Weighted mean value identities over balls are considered for harmonic functions and their derivatives. Logarithmic and other weights are involved in these identities for functions. Some applications of weighted identities are presented.…

Analysis of PDEs · Mathematics 2023-02-14 Nikolay Kuznetsov

Frame theory is an exciting, dynamic and fast paced subject with applications in numerous fields of mathematics and engineering. In this paper we study Continuous Frame and introduce Continuous Frame with $C^{\ast}$-valued bounds. Also, we…

Functional Analysis · Mathematics 2022-09-05 Mohamed Rossafi , M'hamed Ghiati , Mohammed Mouniane , Frej Chouchene , Samir Kabbaj