ANALYTIC FUNCTIONS AND μ-REGULAR FUNCTIONS: A COMPARATIVE STUDY
Keywords:
μ-regular, analytic function, Cauchy-Riemann equationDOI:
https://doi.org/10.17654/0972087126005Abstract
This article examines the basic concept of a μ-regular function compared to an analytic function, in connection with the fact that these two complex functions are built from panharmonic functions and harmonic functions, which are solutions of the Yukawa equation and the Laplace partial differential equation, respectively. The two differential equations differ only in that the Yukawa equation has a positive constant on the right-hand side, while the Laplace equation has a zero constant there. In general, the Laplace equation is a special case of the Yukawa equation.
Similarly, the complex-valued functions constructed from these two real-valued functions, namely, harmonic and panharmonic functions are considered. Analytic functions are those whose real and imaginary parts are harmonic functions and which satisfy the Cauchy-Riemann equations, whereas μ-regular functions are complex functions whose real and imaginary parts are panharmonic functions and satisfy the generalized Cauchy-Riemann equations. In fact, if in the generalized Cauchy-Riemann equations, then the standard Cauchy-Riemann equations are recovered.
Received: May 2, 2025
Revised: July 12, 2025
Accepted: July 28, 2025
References
[1] L. V. Ahlfors, Complex analysis, An Introduction to the Theory of Analytic Functions of One Complex Variable, 3rd ed., McGraw-Hill, Inc., New York, 1979.
[2] M. Andersson, Topics in Complex Analysis, Springer-Verlag, New York, Inc., 1997.
[3] S. Axler, P. Bourdon and W. Ramey, Harmonic Function Theory, Springer- Verlag, New York, 1991.
[4] L. Bers, An outline of the theory of pseudo analytic functions, Bull. Amer. Math. Soc. 62 (1956), 291-331.
[5] L. R. Bragg and J. W. Dettman, Function theories for the Yukawa and Helmholtz equation, Rocky Mountain J. Math. 25(3) (1995), 887-917.
[6] J. W. Brown and R. V. Churchill, Complex Variables and Application, 9th ed., McGraw-Hill Education, New York, 2014.
[7] E. Cahya, Panharmonic functions, J. Mat. Sains 4, Special edition (2) (1999), 94-99.
[8] E. Cahya, -regular function, MIHMI 6(5) (2000), 43-47.
[9] E. Cahya, The roots of -regular function, MATEMATIKA, J. Mat. Pembelajarannya VIII, Special edition (2002), 135-138.
[10] E. Cahya, Maximum and minimum principles of panharmonic functions, MATEMATIKA, J. Mat. Pembelajarannya X (1) (2004), 17-26.
[11] E. Cahya and S. M. Gozali, On the conjugate -regular complex valued function, Journal of Physics: Conference Series 1013 (2018), 012150.
[12] R. J. De Branges, A proof of the Bieberbach conjecture, Acta Math. 154 (1985), 137-152.
[13] R. J. Duffin, Yukawan potential theory, J. Math. Anal. Appl. 35 (1971), 104-130.
[14] J. F. Francis, Complex variables, Harmonic and Analytic Functions, Dover Publications, New York, 1983.
[15] D. Gilbarg and N. S. Trudinger, Elliptic Partial Differential Equations of Second Order, Springer-Verlag, New York, 1983.
[16] L. D. Huang, The modified Helmholtz equation and their boundary value problems, Acta Math. Sci. 8(2) (1988), 165-179.
[17] S. G. Krantz, Complex Analysis: The Geometric Viewpoint, The Mathematical Association of America, Washington, 1990.
[18] E. Nelson, A proof of Liouville’s theorem, Proc. Amer. Math. Soc. 12 (1961), 995.
[19] J. L. Schiff and W. J. Walker, A Bieberbach condition for a class of pseudo-analytic functions, J. Math. Anal. Appl. 146(2) (1990), 570-579.
[20] W. Setya-Budhi, Panharmonic function on the disk, J. Mat. Sains 4, Special edition (2) (1999), 119-125.
[21] G. K. Steven, Complex Variables: A Physical Approach, 2nd ed., CRC Press, Taylor & Francis Group. Boca Raton, London New York, 2019.
[22] W. Rudin, Real and Complex Analysis, 3rd ed., McGraw-Hill International Editions, 1987.
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