Derivation and Evaluations of a Generalized Finite Integral Involving Transcendental and Hypergeometric Kernels
Abstract
In this paper we have established a finite integral involving the product of the hypergeometric, exponential, and rational functions in terms of an infinite series. The infinite series involves the product of the incomplete gamma function and a rational function which can be reduced to the Hurwitz-Lerch zeta function as a special case. Other results are possible for various special cases of the parameters involved. The finite integral will be used to derive formulae involving elliptic functions, product of logarithm functions and a few other special case examples which are new to best of our knowledge along with errata for examples in some well known textbooks. The method used to derive this integral is contour integration. The parameters involved are valid over the complex plane unless stated otherwise.
Keywords
References
- [1] NIST Digital Library of Mathematical Functions, NIST Digital Library of Mathematical Functions, Release 1.2.6 (2026). $\href{https://dlmf.nist.gov}{\mbox{[Web]}} $
- [2] A. Erdelyi, W. Magnus, F. Oberhettinger and F. Tricomi, Higher Transcendental Functions, McGraw-Hill Book Company, Volume I (1953). $ \href{https://ia801504.us.archive.org/29/items/in.ernet.dli.2015.461466/2015.461466.Higher-Transcendental_text.pdf}{\mbox{[Web]}} $
- [3] M. Milgram, The Generalized Integro-Exponential Function, Math. Comp., 44(170) (1985), 443–458. $ \href{https://doi.org/10.1090/S0025-5718-1985-0777276-4}{\mbox{[CrossRef]}} \href{https://www.scopus.com/pages/publications/84966220847?origin=resultslist}{\mbox{[Scopus]}} \href{https://www.webofscience.com/wos/woscc/full-record/WOS:A1985AHS3000012}{\mbox{[Web of Science]}} $
- [4] I. Gradshteyn and I. Ryzhik, Tables of Integrals, Series and Products, Academic Press, 6th ed. (2000). $\href{https://www.scirp.org/reference/referencespapers?referenceid=1505571}{\mbox{[Web]}} $
- [5] Y.L. Luke, The Special Functions and Their Approximations, Elsevier Science (1969), 1–348. $\href{https://ia801506.us.archive.org/10/items/in.ernet.dli.2015.141299/2015.141299.The-Special-Functions-And-Their-Approximations-Vol-1.pdf}{\mbox{[Web]}} $
- [6] M. Chaudhry and S. Zubair, On a Class of Incomplete Gamma Functions with Applications, Chapman and Hall/CRC, Boca Raton (2002). $ \href{https://www.gbv.de/dms/goettingen/329172409.pdf}{\mbox{[Web]}} $
- [7] H. Alzer and K. Richards, Series Representations for Special Functions and Mathematical Constants, Ramanujan J., 40 (2016), 291–310. $ \href{https://doi.org/10.1007/s11139-015-9679-7}{\mbox{[CrossRef]}} \href{https://www.scopus.com/pages/publications/84925425889?origin=resultslist}{\mbox{[Scopus]}} \href{https://www.webofscience.com/wos/woscc/full-record/WOS:000374967900006}{\mbox{[Web of Science]}} $
- [8] J. Choi and A. Rathie, Evaluation of Certain New Class of Definite Integrals, Integral Transforms Spec. Funct., 26(4) (2015), 282–294. $ \href{https://doi.org/10.1080/10652469.2014.1001385}{\mbox{[CrossRef]}} \href{https://www.scopus.com/pages/publications/84961353270?origin=resultslist}{\mbox{[Scopus]}} \href{https://www.webofscience.com/wos/woscc/full-record/WOS:000349151700005}{\mbox{[Web of Science]}}$
Details
Primary Language
English
Subjects
Mathematical Methods and Special Functions
Journal Section
Research Article
Authors
Publication Date
June 30, 2026
Submission Date
October 31, 2025
Acceptance Date
June 23, 2026
Published in Issue
Year 2026 Volume: 9 Number: 2
