activity
20102022
most citedChebyshev constants for the unit circle

20 citations · 21 across the 10 of their papers we have counts for

collaborators

14 papers

math.CA2022

On the oscillations of the modulus of Rudin-Shapiro polynomials around the middle of their ranges

Tamás Erdélyi

Let either or , where and are the usual Rudin-Shapiro polynomials of degree with . The graphs of the…

math.CA2022

Asymptotic Directions for the Zero Sets of the Components of an Electrical Field from a Finite Number of Point Charges on the Plane Part II

Tamas Erdelyi, Joseph Rosenblatt, Rebecca Rosenblatt

We study the structure of the zero set of a nontrivial finite point charge electrical field in the plane . We establish equations satisfied by the possible…

math.CA2018

The asymptotic distance between an ultraflat unimodular polynomial and its conjugate reciprocal

Tamás Erdélyi

Let A sequence of polynomials $P_n \in {\mat…

math.CA2018

The sharp Remez-type inequality for even trigonometric polynomials on the period

Tamás Erdélyi

We prove that for every even trigonometric polynomia…

math.CA2017

The asymptotic value of the Mahler measure of the Rudin-Shapiro polynomials

Tamás Erdélyi

In signal processing the Rudin-Shapiro polynomials have good autocorrelation properties and their values on the unit circle are small. Binary sequences with low autocorrelation coe…

math.CV2017

Improved lower bounds for the Mahler measure of the Fekete polynomials

Tamás Erdélyi

We show that there is an absolute constant such that the Mahler measure of the Fekete polynomials of the form $$f_p(z) := \sum_{k=1}^{p-1}{\left( \frac kp \right)z^…

math.CV2017

On the oscillation of the modulus of the Rudin-Shapiro polynomials on the unit circle

Tamás Erdélyi

In signal processing the Rudin-Shapiro polynomials have good autocorrelation properties and their values on the unit circle are small. Binary sequences with low autocorrelation coe…

math.NT2017

Improved lower bound for the number of unimodular zeros of self-reciprocal polynomials with coefficients in a finite set

Tamás Erdélyi

Let be non-negative integers. In a private communication Brian Conrey asked how fast the number of real zeros of the trigonometric polynomials $T_N(θ) =…

math.CA2016

The number of unimodular zeros of self-reciprocal polynomials with coefficients in a finite set

Tamas Erdelyi

We study the number of real zeros of trigonometric polynomials in a period and the number of zeros of self-reciprocal algebraic polynomials on the unit circle under the assumption…

math.CA2014

Inequalities for Lorentz polynomials

Tamas Erdelyi

We prove a few interesting inequalities for Lorentz polynomials including Nikolskii-type inequalities. A highlight of the paper is a sharp Markov-type inequality for polynomials of…

math.NT2014★ 1 cited

Coppersmith-Rivlin type inequalities and the order of vanishing of polynomials at 1

Tamas Erdelyi

We examine the maximal number of zeros a polynomial of degree at most n with constrained coefficients may have at 1. Our results are essentially sharp and extend earlier results of…

math.NT2012

A note on Barker polynomials

Peter Borwein, Tamas Erdelyi

We give a new proof of the fact that Barker polynomials of even degree greater than 12, and hence Barker sequences of odd length greater than 13 do not exist. This is intimately ti…

math.MG2010★ 20 cited

Chebyshev constants for the unit circle

Gergely Ambrus, Keith M. Ball, T. Erdélyi

It is proven that for any system of n points z_1, ..., z_n on the (complex) unit circle, there exists another point z of norm 1, such that Equality…

math.CA2010

The size of exponential sums on intervals of the real line

Tamás Erdélyi, Kaveh Khodjasteh, Lorenza Viola

We prove that there is a constant depending only on and such that for every of…