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This paper establishes $L^p$-improving estimates for a variety of Radon-like transforms which integrate functions over submanifolds of intermediate dimension. In each case, the results rely on a unique notion of curvature which relates to,…

经典分析与常微分方程 · 数学 2016-09-13 Philip T. Gressman

We prove certain $L^p$ Sobolev-type inequalities for twisted differential forms on real (and complex) manifolds for the Laplace operator $\Delta$, the differential operators $d$ and $d^*$, and the operator $\bar\partial$. A key tool to get…

偏微分方程分析 · 数学 2025-01-13 Fusheng Deng , Gang Huang , Xiangsen Qin

We study the Mercer inequality and its operator extension for superquadratic functions. In particular, we give a more general form of the Mercer inequality by replacing some constants by positive operators. As some consequences, our results…

泛函分析 · 数学 2024-03-27 Mohsen Kian , Zainab Peymani Mazraj

We consider the torsional rigidity and the principal eigenvalue related to the $p$-Laplace operator. The goal is to find upper and lower bounds to products of suitable powers of the quantities above in various classes of domains. The limit…

偏微分方程分析 · 数学 2021-05-21 Briani Luca , Buttazzo Giuseppe , Prinari Francesca

In this paper we introduce a new technique for proving norm inequalities in operator ideals with an unitarily invariant norm. Among the well known inequalities which can be proved with this technique are the L\"owner-Heinz inequality,…

算子代数 · 数学 2008-08-19 Gabriel Larotonda

In this article, we consider the spectral problem for the mixed local and nonlocal $p$-Laplace operator. We discuss the existence and regularity of eigenfunction of the associated Dirichlet $(p,q)$-eigenvalue problem in a bounded domain…

偏微分方程分析 · 数学 2023-03-07 Prashanta Garain , Alexander Ukhlov

Tsallis relative operator entropy is defined and then its properties are given. Shannon inequality and its reverse one in Hilbert space operators derived by T.Furuta \cite{Fu:par} are extended in terms of the parameter of the Tsallis…

泛函分析 · 数学 2007-05-23 Kenjiro Yanagi , Ken Kuriyama , Shigeru Furuichi

In this paper, we obtain some Simpson type inequalities for functions whose second derivatives absolute value or q-th power of them are Q-class functions. Also we give applications to numerical integration.

经典分析与常微分方程 · 数学 2012-07-11 M. Emin Ozdemir , Alper Ekinci , Mustafa Gurbuz , Ahmet Ocak Akdemir

In this paper we prove some monotonicity, log--convexity and log--concavity properties for the Volterra and incomplete Volterra functions. Moreover, as consequences of these results, we present some functional inequalities (like Tur\'an…

经典分析与常微分方程 · 数学 2018-11-20 Khaled Mehrez , Sergei M. Sitnik

We study the discrete version of the $p$-Laplacian. Based on its variational properties we discuss some features of the associated parabolic problem. Our approach allows us in turn to obtain interesting information about positivity and…

组合数学 · 数学 2018-12-21 Delio Mugnolo

In this paper we prove some exponential inequalities involving the sinc function. We analyze and prove inequalities with constant exponents as well as inequalities with certain polynomial exponents. Also, we establish intervals in which…

经典分析与常微分方程 · 数学 2019-10-15 Marija Rasajski , Tatjana Lutovac , Branko Malesevic

An important class of fractional differential and integral operators is given by the theory of fractional calculus with respect to functions, sometimes called $\Psi$-fractional calculus. The operational calculus approach has proved useful…

经典分析与常微分方程 · 数学 2020-08-11 Hafiz Muhammad Fahad , Mujeeb ur Rehman , Arran Fernandez

In this article, under mild constraints on the sectional curvature, we exploit a divergence formula for symmetric endomorphisms to deduce a general Poincar\'e type inequality. We apply such inequality to higher-order mean curvature of…

微分几何 · 数学 2023-06-02 Hilário Alencar , Márcio Batista , Gregório Silva Neto

In this paper, Hermite-Hadamard type inequality for Sugeno integrals based on log-convex functions is studied. Some examples are given to illustrate the results.

经典分析与常微分方程 · 数学 2015-06-25 Sercan Turhan , Nurgül Okur Bekar , Hande Günay Akdemir

In this paper our aim is to present some monotonicity and convexity properties for the one dimensional regularization of the Coulomb potential, which has applications in the study of atoms in magnetic fields and which is in fact a…

经典分析与常微分方程 · 数学 2013-08-19 Árpád Baricz , Tibor K. Pogány

In this article, functional inequalities for diffusion semigroups on Riemannian manifolds (possibly with boundary) are established, which are equivalent to pinched Ricci curvature, along with gradient estimates, $L^p$-inequalities and…

概率论 · 数学 2016-11-08 Li-Juan Cheng , Anton Thalmaier

For a hyponormal operator, C. R. Putnam's inequality gives an upper bound on the norm of its self-commutator. In the special case of a Toeplitz operator with analytic symbol in the Smirnov space of a domain, there is also a geometric lower…

泛函分析 · 数学 2014-11-13 Steven R. Bell , Timothy Ferguson , Erik Lundberg

In this paper, we prove some new inequalities of Hadamard-type for convex functions on the co-ordinates.

经典分析与常微分方程 · 数学 2012-03-21 M. Emin Ozdemir , Ahmet Ocak Akdemir , Mevlut Tunc

We obtain sharp inequalities for the k-plane transform, the "j-plane to k-plane" transform, and the corresponding dual transforms, acting on $L^p$ spaces with a radial power weight. The operator norms are explicitly evaluated. Some…

泛函分析 · 数学 2012-07-24 Boris Rubin

In the paper, the authors establish three kinds of double inequalities for the trigamma function in terms of the exponential function to powers of the digamma function. These newly established inequalities extend some known results. The…

经典分析与常微分方程 · 数学 2015-12-17 Feng Qi , Cristinel Mortici