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Related papers: Fekete's Subadditive Lemma Revisited

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We prove an analogue of Fekete's subadditivity lemma for functions of several real variables which are subadditive in each variable taken singularly. This extends both the classical case for subadditive functions of one real variable, and a…

Classical Analysis and ODEs · Mathematics 2021-02-04 Silvio Capobianco

We prove an analogue of Fekete's lemma for subadditive right-subinvariant functions defined on the finite subsets of a cancellative left-amenable semigroup. This extends results previously obtained in the case of amenable groups by E.…

Group Theory · Mathematics 2015-05-06 Tullio Ceccherini-Silberstein , Fabrice Krieger , Michel Coornaert

In this paper, we present an alternative proof of Fekete's Lemma. We demonstrate that for any subadditive sequence, it is possible to construct a subadditive function that exactly interpolates the sequence. Using this result, along with…

Classical Analysis and ODEs · Mathematics 2024-10-30 Angshuman R. Goswami

Fekete's lemma shows the existence of limits in subadditive sequences. This lemma, and generalisations of it, also have been used to prove the existence of thermodynamic limits in statistical mechanics. In this paper it is shown that the…

Statistical Mechanics · Physics 2021-01-14 EJ Janse van Rensburg

Fekete's lemma is a well known result from combinatorial mathematics that shows the existence of a limit value related to super- and subadditive sequences of real numbers. In this paper, we analyze Fekete's lemma in view of the arithmetical…

Information Theory · Computer Science 2024-09-02 Holger Boche , Yannik Böck , Christian Deppe

We prove the several variable version of the classical equidistribution theorem for Fekete points of a compact subset of the complex plane, which settles a well-known conjecture in pluri-potential theory. The result is obtained as a special…

Complex Variables · Mathematics 2008-07-02 R. Berman , S. Boucksom

The notion of asymptotic Fekete arrays, arrays of points in a compact set $K\subset {\bf C}^d$ which behave asymptotically like Fekete arrays, has been well-studied, albeit much more recently in dimensions $d>1$. Here we show that one can…

Complex Variables · Mathematics 2022-10-20 T. Bloom , L. Bos , N. Levenberg

We introduce a symbolic representation of $r$-fold harmonic sums at negative indices. This representation allows us to recover and extend some recent results by Duchamp et al., such as recurrence relations and generating functions for these…

Number Theory · Mathematics 2019-03-19 Lin Jiu , Tanay Wakhare , Christophe Vignat

In this paper we consider finite dimensional dynamical systems generated by a Lipschitz function. We prove a version of the Whitney's Extension Theorem on compact manifolds to obtain a version of the well-known Lambda Lemma for Lipschitz…

Analysis of PDEs · Mathematics 2021-09-16 Leonardo Pires , Giuliano G. La Guardia

We study a cut-off function lemma in projective spaces. We believe that this is well-known. We provide the details of the computation for later uses.

Complex Variables · Mathematics 2012-05-24 Taeyong Ahn

We consider approximations of a continuous function on a countable normed Fr\'{e}chet space by analytic and $*$-analytic. Also we found a criterium of the existence of an extension of a continuous function from a dense subspace of a…

Functional Analysis · Mathematics 2015-05-01 M. A. Mytrofanov , A. V. Ravsky

In the present paper, a subclass of analytic and bi-univalent functions by means of (p; q)- Lucas polynomials is introduced. Certain coefficients bounds for functions belonging to this subclass are obtained. Furthermore, the Fekete-Szego…

Complex Variables · Mathematics 2020-04-02 Ala Amourah

We discuss how countable subadditivity of operators can be derived from subadditivity under mild forms of continuity, and provide examples manifesting such circumstances.

Analysis of PDEs · Mathematics 2023-04-18 Loukas Grafakos , Monica Visan

We reprove the countable splitting lemma by adapting Nawrotzki's algorithm which produces a sequence that converges to a solution. Our algorithm combines Nawrotzki's approach with taking finite cuts. It is constructive in the sense that…

Logic in Computer Science · Computer Science 2021-06-15 Ana Sokolova , Harald Woracek

We give a combinatorial characterization of countable submaximal subspaces of $2^\kappa$. Using a parametrized version of Mathias forcing, we prove that there exists a countable submaximal subspace of $2^{\omega_1}$ whilst…

General Topology · Mathematics 2021-12-08 César Corral

We will remark an extension of a linear functional on subalgebra of algebra of continuous functions on subset of $\mathbb{R}^n$ which preserves positivity.

Functional Analysis · Mathematics 2016-08-25 Hoàng Phi Dũng

A classical result of Fekete gives necessary conditions on a compact set in the complex plane so that it contains infinitely many sets of conjugate algebraic integers. For such sets, we demonstrate the existence of a sequence of algebraic…

Complex Variables · Mathematics 2025-12-02 Norm Levenberg , Mayuresh Londhe

In the present work, we propose to investigate the Fekete-Szeg\"o inequalities certain classes of analytic and bi-univalent functions defined by subordination. The results in the bounds of the third coefficient which improve many known…

Complex Variables · Mathematics 2014-04-04 Halit Orhan , N. Magesh , V. K. Balaji

We develop a version of Herbrand's theorem for continuous logic and use it to prove that definable functions in infinite-dimensional Hilbert spaces are piecewise approximable by affine functions. We obtain similar results for definable…

Logic · Mathematics 2011-07-20 Isaac Goldbring

In the present investigation, certain subclasses of close-to-convex functions are investigated. In particular, we obtain an estimate for the Fekete-Szeg\"o functional for functions belonging to the class, distortion, growth estimates and…

Complex Variables · Mathematics 2011-12-30 Nak Eun Cho , Oh Sang Kwon , V. Ravichandran
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