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We prove a sharp integral inequality for the dyadic maximal operator and give as an application another proof for the computation of its Bellman function of three variables.

Functional Analysis · Mathematics 2014-04-01 Eleftherios Nikolidakis , Antonios Melas

Eigenvalues inequalities involving (log) convex/concav functions and Hermitian matrices, positive unital maps are considered. Simple proofs of Bhatia-Kittaneh inequality and Naimark dilation theorem are given.

Operator Algebras · Mathematics 2007-05-23 Jaspal Singh Aujla Jean-Christophe Bourin

Bicubic maps are in bijection with \beta(0,1)-trees. We introduce two new ways of decomposing \beta(0,1)-trees. Using this we define an endofunction on \beta(0,1)-trees, and thus also on bicubic maps. We show that this endofunction is in…

Combinatorics · Mathematics 2013-06-25 Anders Claesson , Sergey Kitaev , Anna de Mier

In this note we revisit the problem of explicitly computing tree-level scattering amplitudes in various theories in any dimension from worldsheet formulas. The latter are known to produce cubic-tree expansion of tree amplitudes with…

High Energy Physics - Theory · Physics 2024-08-14 Song He , Linghui Hou , Jintian Tian , Yong Zhang

The paper is devoted to equipartition of measured information for finite state processes over regular trees whose laws are invariant under all parity preserving tree automorphisms. We show almost everywhere equipartition for ergodic…

Dynamical Systems · Mathematics 2025-11-13 Felix Pogorzelski , Elias Zimmermann

A generalization of Young's inequality for convolution with sharp constant is conjectured for scenarios where more than two functions are being convolved, and it is proven for certain parameter ranges. The conjecture would provide a unified…

Functional Analysis · Mathematics 2011-08-09 Sergey Bobkov , Mokshay Madiman , Liyao Wang

We give a distribution-dependent concentration inequality for functions of independent variables. The result extends Bernstein's inequality from sums to more general functions, whose variation in any argument does not depend too much on the…

Probability · Mathematics 2017-05-12 Andreas Maurer

We generalize Abel's classical theorem on linear equivalence of divisors on a Riemann surface. For every closed submanifold $M^d \subset X^n$ in a compact oriented Riemannian $n$--manifold, or more generally for any $d$--cycle $Z$ relative…

Differential Geometry · Mathematics 2008-12-02 Johan L. Dupont , Franz W. Kamber

We provide a new geometric proof of Reimann's theorem characterizing quasiconformal mappings as the ones preserving functions of bounded mean oscillation. While our proof is new already in the Euclidean spaces, it is applicable in…

Classical Analysis and ODEs · Mathematics 2016-03-16 Riikka Korte , Niko Marola , Olli Saari

In this paper, we prove an extended version of the Minkowski Inequality, holding for any smooth bounded set $\Omega \subset \mathbb R^n$, $n\geq 3$. Our proof relies on the discovery of effective monotonicity formulas holding along the…

Analysis of PDEs · Mathematics 2021-01-05 Virginia Agostiniani , Mattia Fogagnolo , Lorenzo Mazzieri

By $BMO_o(R)$ we denote the space consisting of all those odd and bounded mean oscillation functions on R. In this paper we characterize the functions in $BMO_o(R)$ with bounded support as those ones that can be written as a sum of a…

Classical Analysis and ODEs · Mathematics 2023-10-26 Víctor Almeida , Jorge J. Betancor , Alejandro J. Castro , Juan C. Fariña , Lourdes Rodríguez-Mesa

Suppose that (M,d,m) is an unbounded metric measure space, which possesses two geometric properties, called "isoperimetric property" and "approximate midpoint property", and that the measure m is locally doubling. The isoperimetric property…

Functional Analysis · Mathematics 2008-08-04 Andrea Carbonaro , Giancarlo Mauceri , Stefano Meda

We precisely compute the Bellman function of two variables of the dyadic maximal operator in relation to Kolmogorov inequality. In this way we give an alternative proof of the results in [5].Additionally, we characterize the sequences of…

Functional Analysis · Mathematics 2014-04-01 Eleftherios Nikolidakis

We consider Bergman spaces and variations of them in one or several complex variables. For some domains we show that in these spaces the generic function is totally unbounded and hence non - extendable. We also show that the generic…

Complex Variables · Mathematics 2017-04-10 T. Hatziafratis , K. Kioulafa , V. Nestoridis

We prove a family of new Weitzenb\"ock formulas on a Riemannian foliation with totally geodesic leaves. These Weitzenb\"ock formulas are naturally parametrized by the canonical variation of the metric. As a consequence, under natural…

Differential Geometry · Mathematics 2015-10-15 Fabrice Baudoin , Bumsik Kim , Jing Wang

In this paper, we investigate the complete monotonicity of some functions involving gamma function. Using the monotonic properties of these functions, we derived some inequalities involving gamma and beta functions. Such inequalities…

Classical Analysis and ODEs · Mathematics 2017-06-08 M. Al-Jararha

We obtain new local Calderon-Zygmund estimates for elliptic equations with matrix-valued weights for linear as well as non-linear equations. We introduce a novel log-BMO condition on the weight M. In particular, we assume smallness of the…

Analysis of PDEs · Mathematics 2020-03-24 Anna Kh. Balci , Lars Diening , Raffaella Giova , Antonia Passarelli di Napoli

It is very difficult and important to construct Bell inequalities for n-partite, k-settings of measurement, and d-dimensional (n,k,d) systems. Inspired by the iteration formula form of the Mermin-Ardehali-Belinski{\u{\i}}-Klyshko (MABK)…

Quantum Physics · Physics 2023-11-08 Hui-Xian Meng , Yu Zhang , Xing-Yan Fan , Jie Zhou , Wei-Min Shang , Jing-Ling Chen

We prove a general criterion for a von Neumann algebra $M$ in order to be in standard form. It is formulated in terms of an everywhere defined, invertible, antilinear, a priori not necessarily bounded operator, intertwining $M$ with its…

Operator Algebras · Mathematics 2015-05-20 Francesco Fidaleo , László Zsidó

We present in a unified setting the foundations for a theory of non-bilinear Dirichlet functionals on Hilbert spaces. We prove known and new equivalences between non-linear semigroups, non-linear resolvents, non-linear generators, and their…

Functional Analysis · Mathematics 2025-10-06 Giovanni Brigati , Lorenzo Dello Schiavo