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In a recent work, Klartag gave an improved version of Lichnerowicz' spectral gap bound for uniformly log-concave measures, which improves on the classical estimate by taking into account the covariance matrix. We analyze the equality cases…

Functional Analysis · Mathematics 2024-04-19 Thomas A. Courtade , Max Fathi

We prove two improved versions of the Hardy-Rellich inequality for the polyharmonic operator $(-\Delta)^m$ involving the distance to the boundary. The first involves an infinite series improvement using logarithmic functions, while the…

Analysis of PDEs · Mathematics 2007-05-23 G. Barbatis

We improve the previuosly known bound for some vertex Folkman numbers.

Combinatorics · Mathematics 2007-05-23 N. Kolev , N. Nenov

In this short note, we employ well-known results to improve the lower bound for the constant associated with the linear term in the asymptotic expansion of the minimal logarithmic energy on the sphere.

Classical Analysis and ODEs · Mathematics 2025-06-03 Jordi Marzo

The goal of this note is to improve on the currently available bounds for Stieltjes constants using the method of steepest descent applied by Coffey and Knessl to approximate Stieltjes constants.

Number Theory · Mathematics 2023-04-05 Sebastian Pauli , Filip Saidak

A remark on the proof that the Grothendieck constant satisfies $K_G < \pi/(2\ln(1+\sqrt{2}))$.

Functional Analysis · Mathematics 2023-06-05 Jean-Louis Krivine

This paper improves the bound on $|S(T)|$. The main result is to show that $|S(T)|\leq 0.111\log T + 0.275\log\log T + 2.450$, which is valid for all $T\geq e$.

Number Theory · Mathematics 2013-10-10 T. S. Trudgian

Cyclotomic polylogarithms are reviewed and new results concerning the special constants that occur are presented. This also allows some comments on previous literature results using PSLQ.

High Energy Physics - Theory · Physics 2017-12-25 Jakob Ablinger , Johannes Blumlein , Mark Round , Carsten Schneider

Improved estimates on the constants $L_{\gamma,d}$, for $1/2<\gamma<3/2$, $d\in N$ in the inequalities for the eigenvalue moments of Schr\"{o}dinger operators are established.

Mathematical Physics · Physics 2009-10-31 D. Hundertmark , A. Laptev , T. Weidl

This paper is essentially derived from the observation that some results used for improving constants in the Lieb-Thirring inequalities for Schrodinger operators in L2(-\infty,\infty) can be translated to the discrete Schrodinger op-…

Functional Analysis · Mathematics 2013-12-09 Arman Sahovic

We use some elementary arguments to obtain a new bound on bilinear sums with weighted Kloosterman sums which complements those recently obtained by E. Kowalski, P. Michel and W. Sawin (2020).

Number Theory · Mathematics 2021-11-16 Nilanjan Bag , Igor E. Shparlinski

We prove new upper bounds for a spectral exponential sum by refining the process by which one evaluates mean values of $L$-functions multiplied by an oscillating function. In particular, we introduce a method which is capable of taking into…

Number Theory · Mathematics 2018-09-19 Olga Balkanova , Dmitry Frolenkov

We show that even mild improvements of the Polya-Vinogradov inequality would imply significant improvements of Burgess' bound on character sums. Our main ingredients are a lower bound on certain types of character sums (coming from works of…

Number Theory · Mathematics 2017-06-12 Elijah Fromm , Leo Goldmakher

The explicit semiclassical treatment of logarithmic perturbation theory for the bound-state problem within the framework of the radial Klein-Gordon equation with attractive real-analytic screened Coulomb potentials, contained time-component…

Quantum Physics · Physics 2007-05-23 I. V. Dobrovolska , R. S. Tutik

The problem of analyzing the number of number field extensions $L/K$ with bounded (relative) discriminant has been the subject of renewed interest in recent years, with significant advances made by Schmidt, Ellenberg-Venkatesh, Bhargava,…

Number Theory · Mathematics 2017-04-18 Evan P. Dummit

This report discusses the improved bound of the cluster expansion, recently proposed by Procacci and Yuhjtman (Lett. Math. Phys. 107, 31, 2017). Brydges and Helmuth noticed the relevance of Kruskal's algorithm, which allows to streamline…

Mathematical Physics · Physics 2019-06-10 Daniel Ueltschi

We make explicit a theorem of Fromm and Goldmakher [arXiv:1706.03002], which states that one can improve Burgess' bound for short character sums simply by improving the leading constant in the P\'{o}lya-Vinogradov inequality. Towards…

Number Theory · Mathematics 2020-07-17 Matteo Bordignon , Forrest Francis

I review recent progress achieved on the lattice in the quantitative comprehension of chiral symmetry breaking in QCD. Emphasis is given to the recent precise computations of the spectral density of the Dirac operator in the continuum…

High Energy Physics - Lattice · Physics 2015-11-30 Leonardo Giusti

We provide new estimates on the best constant of the Lieb-Thirring inequality for the sum of the negative eigenvalues of Schr\"odinger operators, which significantly improve the so far existing bounds.

Mathematical Physics · Physics 2024-01-31 Rupert L. Frank , Dirk Hundertmark , Michal Jex , Phan Thành Nam

In this paper, we consider meromorphic extension of the function \[ \zeta_{h^{\left( r\right) }}\left( s\right) =\sum_{k=1}^{\infty} \frac{h_{k}^{\left( r\right) }}{k^{s}},\text{ }\operatorname{Re}\left( s\right) >r, \] (which we call…

Number Theory · Mathematics 2023-04-11 Mümün Can , Ayhan Dil , Levent Kargın
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