output
20102023
most citedThe radius of convexity of normalized Bessel functions of the first kind

73 citations

24 papers

eess.SY2023★ 10 cited

Establishing a Learning Model for Correct Hand Hygiene Technique in a NICU

Irén A. Kopcsóné Németh, Csaba Nádor, László Szilágyi +2

The ability of healthcare workers to learn proper hand hygiene has been an understudied area of research. Generally, hand hygiene skills are regarded as a key contributor to reduce…

physics.class-ph2022★ 12 cited

Advanced self-similar solutions of regular and irregular diffusion equations

Imre Ferenc Barna, László Mátyás

We study the diffusion equation with an appropriate change of variables. This equation is in general a partial differential equation (PDE). With the self-similar and related Ansatä…

nlin.SI2022★ 3 cited

Time-dependent analytic solutions for water waves above sea of varying depths

I. F. Barna, M. A. Pocsai, L. Mátyás

We investigate a hydrodynamic equation system which - with some approximation - is capable to describe the tsunami propagation in the open ocean with the time-dependent self-simila…

physics.flu-dyn2021★ 11 cited

Self-similar analysis of the time-dependent compressible and incompressible boundary layers including heat conduction

Imre F. Barna, K. Hriczó, G. Bognár +1

We investigate the incompressible and compressible heat conducting boundary layer with applying the two-dimensional self-similar Ansatz. Analytic solutions can be found for the inc…

physics.flu-dyn2020★ 2 cited

Analytic solutions of the rotating and stratified hydrodynamical equations

Imre Ferenc Barna, László Mátyás

In this article we investigate the two-dimensional incompressible rotating and stratified, just rotating, just stratified Euler equations with each other and with the normal Euler…

physics.flu-dyn2020★ 3 cited

Analytic solutions of a two-fluid hydrodynamic model

I. F. Barna, Mátyás László

We investigate a one dimensional flow described with the non-compressible coupled Euler and non-compressible Navier-Stokes equations in Cartesian coordinate systems. We couple the…

nlin.PS2019★ 5 cited

Analytic traveling-wave solutions of the Kardar-Parisi-Zhang interface growing equation with different kind of noise terms

Imre Ferenc Barna, Gabriella Bognár, Mohammed Guedda +2

The one-dimensional Kardar-Parisi-Zhang dynamic interface growth equation with the traveling-wave Ansatz is analyzed. As a new feature additional analytic terms are added. From the…

physics.flu-dyn2019★ 8 cited

Self-similar analysis of a viscous heated Oberbeck-Boussinesq flow system

Imre Ferenc Barna, László Mátyás, Mihály András Pocsai

The simplest model to couple the heat conduction and Navier-Stokes equations together is the Oberbeck-Boussinesq(OB)system which were investigated by E.N. Lorenz and opened the par…

math.AP2018★ 3 cited

On an open question of Ricceri concerning a Kirchhoff-type problem

Francesca Faraci, Csaba Farkas

In the present note we prove a multiplicity result for a Kirchhoff type problem involving a critical term, giving a partial positive answer to a problem raised by Ricceri.

quant-ph2018

Self-similarity analysis of the non-linear Schrödinger equation in the Madelung form

Imre F. Barna, Mihály A. Pocsai, L. Mátyás

In the present study a particular case of Gross-Pitaevskii or non-linear Schrödinger equation is rewritten to a form similar to a hydrodynamic Euler equation using the Madelung tra…

quant-ph2017

Analytic solutions of the Madelung equation

Imre F. Barna, Mihály A. Pocsai, László Mátyás

We present analytic self-similar solutions for the one, two and three dimensional Madelung hydrodynamical equation for a free particle. There is a direct connection between the zer…

math.CV2017★ 36 cited

The radius of uniform convexity of Bessel functions

Erhan Deniz, Róbert Szász

In this paper, we determine the radius of uniform convexity for three kinds of normalized Bessel functions of the first kind. In the mentioned cases the normalized Bessel functions…

math.AP2016★ 18 cited

Singular Poisson equations on Finsler-Hadamard manifolds

Csaba Farkas, Alexandru Kristály, Csaba Varga

In the first part of the paper we study the reflexivity of Sobolev spaces on non-compact and not necessarily reversible Finsler manifolds. Then, by using direct methods in the calc…

math.AP2016

Schrödinger-Maxwell systems on Hadamard manifolds

Csaba Farkas, Alexandru Kristály

In this paper we study nonlinear Schrödinger-Maxwell systems on dimensional Hadamard manifolds, The main difficulty resides in the lack of compactness of such…

math.CA2016★ 7 cited

Products of Bessel and modified Bessel functions

Árpád Baricz, Róbert Szász, Nihat Yağmur

The reality of the zeros of the product and cross-product of Bessel and modified Bessel functions of the first kind is studied. As a consequence the reality of the zeros of two hyp…

physics.flu-dyn2015★ 30 cited

Analytic self-similar solutions of the Oberbeck-Boussinesq equations

I. F. Barna, L. Matyas

In this article we will present pure two-dimensional analytic solutions for the coupled non-compressible Newtoniain Navier-Stokes --- with Boussinesq approximation --- and the heat…

math.CA2015★ 20 cited

The radius of convexity of normalized Bessel functions

Árpád Baricz, Róbert Szász

The radius of convexity of two normalized Bessel functions of the first kind are determined in the case when the order is between and Our methods include the minimum pri…

math.CA2014★ 18 cited

On an identity for zeros of Bessel functions

Árpád Baricz, Dragana Jankov Maširević, Tibor K. Pogány +1

In this paper our aim is to present an elementary proof of an identity of Calogero concerning the zeros of Bessel functions of the first kind. Moreover, by using our elementary app…

math.CA2014★ 25 cited

Close-to-convexity of some special functions and their derivatives

Árpád Baricz, Róbert Szász

In this paper our aim is to deduce some sufficient (and necessary) conditions for the close-to-convexity of some special functions and their derivatives, like Bessel functions, Str…

math.CA2014★ 7 cited

Monotonicity properties of some Dini functions

Árpád Baricz, Tibor K. Pogány, Róbert Szász

In this note our aim is to deduce some new monotonicity properties for a special combination of Bessel functions of the first kind by using a recently developed Mittag-Leffler expa…

math.CA2013★ 73 cited

The radius of convexity of normalized Bessel functions of the first kind

Árpád Baricz, Róbert Szász

In this paper we determine the radius of convexity for three kind of normalized Bessel functions of the first kind. In the mentioned cases the normalized Bessel functions are starl…

math.CV2012

The radius of starlikeness of normalized Bessel functions of the first kind

Árpád Baricz, Pál A. Kupán, Róbert Szász

In this note our aim is to determine the radius of starlikeness of the normalized Bessel functions of the first kind for three different kinds of normalization. The key tool in the…

nlin.AO2011

Self-similar solutions for the Kardar-Parisi-Zhang interface dynamic equation

Imre Ferenc Barna, Laszlo Matyas

In this article we will present a study of the well-known Kardar-Parisi-Zhang(KPZ) model. Under certain conditions we have found analytic self-similar solutions for the underlying…

nlin.CD2010★ 14 cited

Geometrical origin of chaoticity in the bouncing ball billiard

L. Mátyás, I. F. Barna

We present a study of the chaotic behavior of the bouncing ball billiard. The work is realised on the purpose of finding at least certain causes of separation of the neighbouring t…