Fractional-Modified Bessel Function of the First Kind of Integer Order

The modified Bessel function (MBF) of the first kind is a fundamental special function in mathematics with applications in a large number of areas. When the order of this function is integer, it has an integral representation which includes the exponential of the cosine function. Here, we generalize...

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Main Authors: Andrés Martín, Ernesto Estrada
Format: Article
Language:English
Published: MDPI AG 2023-03-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/11/7/1630
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author Andrés Martín
Ernesto Estrada
author_facet Andrés Martín
Ernesto Estrada
author_sort Andrés Martín
collection DOAJ
description The modified Bessel function (MBF) of the first kind is a fundamental special function in mathematics with applications in a large number of areas. When the order of this function is integer, it has an integral representation which includes the exponential of the cosine function. Here, we generalize this MBF to include a fractional parameter, such that the exponential in the previously mentioned integral is replaced by a Mittag–Leffler function. The necessity for this generalization arises from a problem of communication in networks. We find the power series representation of the fractional MBF of the first kind as well as some differential properties. We give some examples of its utility in graph/networks analysis and mention some fundamental open problems for further investigation.
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spelling doaj.art-a17233f8443c43f2bdaa661f89b8a9d92023-11-17T17:08:23ZengMDPI AGMathematics2227-73902023-03-01117163010.3390/math11071630Fractional-Modified Bessel Function of the First Kind of Integer OrderAndrés Martín0Ernesto Estrada1Faculty of Science, University of Zaragoza, Pedro Cerbuna, 50009 Zaragoza, SpainInstitute of Interdisciplinary Physics and Complex Systems (IFISC), 07122 Palma de Mallorca, SpainThe modified Bessel function (MBF) of the first kind is a fundamental special function in mathematics with applications in a large number of areas. When the order of this function is integer, it has an integral representation which includes the exponential of the cosine function. Here, we generalize this MBF to include a fractional parameter, such that the exponential in the previously mentioned integral is replaced by a Mittag–Leffler function. The necessity for this generalization arises from a problem of communication in networks. We find the power series representation of the fractional MBF of the first kind as well as some differential properties. We give some examples of its utility in graph/networks analysis and mention some fundamental open problems for further investigation.https://www.mdpi.com/2227-7390/11/7/1630modified Bessel functionscommunicability in graphsEstrada indexpower-seriesfractional calculusCaputo derivative
spellingShingle Andrés Martín
Ernesto Estrada
Fractional-Modified Bessel Function of the First Kind of Integer Order
Mathematics
modified Bessel functions
communicability in graphs
Estrada index
power-series
fractional calculus
Caputo derivative
title Fractional-Modified Bessel Function of the First Kind of Integer Order
title_full Fractional-Modified Bessel Function of the First Kind of Integer Order
title_fullStr Fractional-Modified Bessel Function of the First Kind of Integer Order
title_full_unstemmed Fractional-Modified Bessel Function of the First Kind of Integer Order
title_short Fractional-Modified Bessel Function of the First Kind of Integer Order
title_sort fractional modified bessel function of the first kind of integer order
topic modified Bessel functions
communicability in graphs
Estrada index
power-series
fractional calculus
Caputo derivative
url https://www.mdpi.com/2227-7390/11/7/1630
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