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We consider the Grushin type operator on $\mathbb{R}^{d}_x \times \mathbb{R}^{k}_y$ with the form \begin{equation*}…

Analysis of PDEs · Mathematics 2016-06-21 Manli Song , Wenjuan Li

We define Euler-Hilbert-Sobolev spaces and obtain embedding results on homogeneous groups using Euler operators, which are homogeneous differential operators of order zero. Sharp remainder terms of $L^{p}$ and weighted Sobolev type and…

Functional Analysis · Mathematics 2018-01-24 Michael Ruzhansky , Durvudkhan Suragan , Nurgissa Yessirkegenov

We show that the modern theory of fully nonlinear operators had been started by the skew symmetry of minors in cooperation with the symmetry of symmetric functions. The paper presents some consequences of this interaction for the m-Hessian…

Analysis of PDEs · Mathematics 2016-11-15 N. M. Ivochkina , N. V. Filimonenkova

This paper considers Lieb-Thirring inequalities for higher order differential operators. A result for general fourth-order operators on the half-line is developed, and the trace inequality tr((-Delta)^2 - C^{HR}_{d,2} / (|x|^4) -…

Spectral Theory · Mathematics 2009-01-11 Tomas Ekholm , Andreas Enblom

We establish a Sobolev-type inequality in Lorentz spaces for $\mathcal{L}$-superharmonic functions \[ \|u\|_{L^{\frac{nq}{n-\alpha q},t}(\mathbb{R}^n)} \leq c \left\| \frac{u(x) - u(y)}{|x-y|^{\frac{n}{q}+\alpha}}…

Analysis of PDEs · Mathematics 2025-07-15 Aye Chan May , Adisak Seesanea

We prove representation formulas for the coisotropic Hofer-Zehnder capacities of bounded convex domains with special coisotropic submanifolds and the leaf relation (introduced by Lisi and Rieser recently), study their estimates and…

Symplectic Geometry · Mathematics 2023-03-29 Rongrong Jin , Guangcun Lu

Using the NU method [A.F.Nikiforov, V.B.Uvarov, Special Functions of Mathematical Physics, Birkhauser,Basel,1988], we investigated the real eigenvalues of the complex and/or $PT$- symmetric, non-Hermitian and the exponential type systems,…

High Energy Physics - Phenomenology · Physics 2009-11-10 Ozlem Yesiltas , Mehmet Simsek , Ramazan Sever , Cevdet Tezcan

Inequalities are derived for power sums of the real part and the modulus of the eigenvalues of a Schr\"odinger operator with a complex-valued potential.

Mathematical Physics · Physics 2007-05-23 Rupert L. Frank , Ari Laptev , Elliott H. Lieb , Robert Seiringer

The present paper is devoted to the boundedness of fractional integral operators in Morrey spaces defined on quasimetric measure spaces. In particular, Sobolev, trace and weighted inequalities with power weights for potential operators are…

Functional Analysis · Mathematics 2008-06-17 Eridani , Vakhtang Kokilashvili , Alexander Meskhi

The dual purpose of this article is to establish bilinear Poincare-type estimates associated to an approximation of the identity and to explore the connections between bilinear pseudo-differential operators and bilinear potential-type…

Classical Analysis and ODEs · Mathematics 2012-10-09 Frederic Bernicot , Diego Maldonado , Kabe Moen , Virginia Naibo

We exhibit several bounds for operator norms of the sum of $\epsilon$-free semicircular random variables introduced in the paper of Speicher and Wysocza\'{n}ski. In particular, using the first and second largest eigenvalues of the adjacency…

Functional Analysis · Mathematics 2025-10-23 Benoît Collins , Akihiro Miyagawa

We derive sharp Adams inequalities for the Riesz and other potentials of functions with arbitrary compact support in R^n. Up to now such results were only known for a class of functions whose supports have uniformly bounded measure. We…

Analysis of PDEs · Mathematics 2015-07-17 Luigi Fontana , Carlo Morpurgo

In this note we revisit a result in [9], where we established nonlocal isoperimetric inequalities and the related embeddings for Besov spaces adapted to a class of H\"ormander operators of Kolmogorov-type. We provide here a new proof which…

Analysis of PDEs · Mathematics 2023-04-21 Nicola Garofalo , Giulio Tralli

It is shown by means of reiterated two-scale convergence in the Sobolev-Orlicz setting, that the sequence of solutions of a class of highly oscillatory problems involving nonlinear elliptic operators with nonstandard growth, converges to a…

Analysis of PDEs · Mathematics 2023-02-20 Joel Fotso Tachago , Hubert Nnang , Elvira Zappale

In this paper, we obtained some new Ostrowski-Gruss type inequalities contains twice differentiable functions.

Classical Analysis and ODEs · Mathematics 2010-12-27 M. Emin Ozdemir , Ahmet Ocak Akdemir , Erhan Set

We clarify how close a second order fully nonlinear equation can come to uniform ellipticity, through counting large eigenvalues of the linearized operator. This suggests an effective and novel way to understand the structure of fully…

Differential Geometry · Mathematics 2022-10-12 Rirong Yuan

We investigate a class of nonlocal gradients featuring distinct homogeneities at zero and infinity. We establish a representation formula for such doubly homogeneous operators and derive associated Sobolev-type inequalities. We also propose…

Functional Analysis · Mathematics 2025-11-04 Stefano Buccheri , Augusto C. Ponce

We give two conditionally exactly solvable inverse power law potentials whose linearly independent solutions include a sum of two confluent hypergeometric functions. We notice that they are partner potentials and multiplicative shape…

Mathematical Physics · Physics 2015-12-08 A. Lopez-Ortega

In this article, motivated by a work of Caffarelli and Cordoba in phase transitions analysis, we prove new weighted anisotropic Sobolev type inequalities, that is Sobolev type inequalities where different derivatives have different weight…

Analysis of PDEs · Mathematics 2007-09-11 Stathis Filippas , Luisa Moschini , Achilles Tertikas

We derive weighted versions of the Cwikel-Lieb-Rozenblum inequality for the Schr\"odinger operator in two dimensions with a nontrivial Aharonov-Bohm magnetic field. Our bounds capture the optimal dependence on the flux and we identify a…

Mathematical Physics · Physics 2023-03-13 Rupert L. Frank , Ari Laptev , Larry Read