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Lower Growth of Generalized Hadamard Product Functions in Clifford Setting

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Abstract

Examining the asymptotic growth behavior of holomorphic and meromorphic functions has significant importance in complex analysis. Estimations of upper bounds for the rate of growth of entire functions are mostly guaranteed. However, the analog estimations for lower bounds of the rate of growth are not always attainable. In this paper, we give the lower rate of growth of the generalized Hadamard product of two entire axially monogenic functions. It has also been shown that the product entire axially monogenic function is of regular growth or perfectly regular growth when its constituent entire axially monogenic functions possess these properties. The investigation of both upper and lower bounds by means of linear transmutation is also provided. Furthermore, some applications related to approximation theory are outlined.

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References

  1. Abdalla, M., Abul-Ez, M.: The growth of generalized Hadamard product of entire axially monogenic functions. Hacet. J. Math. Stat. 47(5), 1231–1239 (2018)

    MathSciNet  Google Scholar 

  2. Abul-Ez, M.: Hadamard product of bases of polynomials in Clifford analysis. Complex Var. 43, 109–128 (2000)

    MathSciNet  MATH  Google Scholar 

  3. Abul-Ez, M., Abd-Elmageed, H., Hidan, M., Abdalla, M.: On the growth order and growth type of entire functions of several complex matrices. J. Funct. Spaces 2020, 1–9 (2020). https://doi.org/10.1155/2020/4027529

    Article  MathSciNet  MATH  Google Scholar 

  4. Abul-Ez, M., Constales, D.: Basic sets of polynomials in Clifford analysis. Complex Var. 14, 177–185 (1990)

    MathSciNet  MATH  Google Scholar 

  5. Abul-Ez, M., Constales, D.: Linear substitution for basic sets of polynomials in Clifford analysis. Portugaliae Math 48, 143–154 (1991)

    MathSciNet  MATH  Google Scholar 

  6. Abul-Ez, M., Constales, D.: On the order of basic series representing Clifford valued functions. Appl. Math. Comput. 142(2–3), 575–584 (2003)

    MathSciNet  MATH  Google Scholar 

  7. Abul-Ez, M.De, Almeida, R.: On the lower order and type of entire axially monogenic functions. Results Math. 63, 1257–1275 (2013)

    Article  MathSciNet  MATH  Google Scholar 

  8. Bakhet, A., Jiao, Y., He, F.: On the Wright hypergeometric matrix functions and their fractional calculus. Integr. Trans. Spec. Funct. 30, 138–156 (2019)

    Article  MathSciNet  MATH  Google Scholar 

  9. Boas Jr., R.P.: Basic sets of polynomials (I). Duke Math. J. 15(3), 717–724 (1948)

    Article  MathSciNet  MATH  Google Scholar 

  10. Boas, R.P., Buck, R.C.: Polynomial Expansions of Analytic Functions. Springer, Berlin (1985)

    MATH  Google Scholar 

  11. Bock, S., Gürlebeck, K.: On a generalized Appell system and monogenic power series. Math. Methods Appl. Sci. 33, 394–411 (2010)

    Article  MathSciNet  MATH  Google Scholar 

  12. Cação, I., Gürlebeck, K., Malonek, H.: Special monogenic polynomials and \(L_2\)-approximation. Adv. Appl. Clifford Algebras 11, 47–60 (2001)

    Article  MathSciNet  MATH  Google Scholar 

  13. Choi, J.H., Kim, Y.C., Owa, S.: Generalizations of Hadamard products of functions with negative coefficients. J. Math. Anal. Appl. 199, 495–501 (1996)

    Article  MathSciNet  MATH  Google Scholar 

  14. Constales, D., De Almeida, R., Kraußhar, R.: On the relation between the growth and the Taylor coefficients of entire solutions to the higher dimensional Cauchy–Riemann system in \({\mathbb{R}}^{n+1}\). J. Math. Anal. Appl. 327, 763–775 (2007)

    Article  MathSciNet  MATH  Google Scholar 

  15. Constales, D., De Almeida, R., Kraußhar, R.: On the growth type of entire monogenic functions. Arch. Math. 88, 153–163 (2007)

    Article  MathSciNet  MATH  Google Scholar 

  16. Constales, D., De Almeida, R., Kraußhar, R.: Applications of the maximum term and the central index in the asymptotic growth analysis of entire solutions to higher dimensional polynomial Cauchy–Riemann equations. Complex Var. Elliptic Equ. 53, 195–213 (2008)

    Article  MathSciNet  MATH  Google Scholar 

  17. De Almeida, R., Kraußhar, R.: On the asymptotic growth of entire monogenic functions. Z. Anwend. 24(4), 791–813 (2005)

    Article  MathSciNet  MATH  Google Scholar 

  18. De Almeida, R., Kraußhar, R.: Basics on growth orders of polymonogenic functions. Complex Var. Elliptic Equ. 60, 1–25 (2015)

    Article  MathSciNet  MATH  Google Scholar 

  19. Brackx, F., Delanghe, R., Sommen, F.: Clifford Analysis. Research Notes in Mathematics 76. London Pitman Books Ltd, London (1982)

    MATH  Google Scholar 

  20. Dutta, R.K.: On order of a function of several complex variables analytic in the unit polydisc. Krag. J. Math. 36, 163–174 (2012)

    MATH  Google Scholar 

  21. Goldberg, A.A.: Elementary remarks on the formulas defining order and type of functions of several variables (Russian), Doklady Akademii Nauk Armyanskii, SSR29, 145–151 (1959)

  22. Gürlebeck, K., Habetha, K., Sprössig, W.: Holomorphic functions in the plane and \(n\)-dimensional space. Birkh aü ser- Verlag, Basel (2008)

    MATH  Google Scholar 

  23. Gürlebeck, K., Sprössig, W.: Quaternionic and Clifford Calculus for Physicists and Engineers. Wiley, Chichester (1997)

    MATH  Google Scholar 

  24. Gürlebeck, K., Habetha, K., Sprössig, W.: Application of Holomorphic Functions in Two and Higher Dimensions. Springer, Basel (2016)

    Book  MATH  Google Scholar 

  25. Hayman, W.K.: The local growth of power series: a survey of the Wiman–Valiron method. Canadian Mathematical Bulletin 17, 317–358 (1974)

    Article  MathSciNet  MATH  Google Scholar 

  26. Jank, G., Volkmann, L.: Meromorphe Funktionen und Differentialgleichungen. UTB Birkhäuser, Basel (1985)

    MATH  Google Scholar 

  27. Kishka, Z., Abul-Ez, M., Saleem, M., Abd-Elmaged, H.: On the order and type of entire matrix functions in complete Reinhardt domain. J. Mod. Meth. Numer. Math. 3, 31–40 (2012)

    Article  MATH  Google Scholar 

  28. Kumar, S., Bala, K.: Generalized type of entire monogenic functions of slow growth. Transylv. J. Math. Mech. 3(2), 95–102 (2011)

    MathSciNet  MATH  Google Scholar 

  29. Kumar, S., Bala, K.: Generalized order of entire monogenic functions of slow growth. J. Nonlinear Sci. Appl. 5(6), 418–425 (2012)

    Article  MathSciNet  MATH  Google Scholar 

  30. Kumar, S., Bala, K.: Generalized growth of monogenic Taylor series of finite convergence radius. Annali delĺ Universitá di Ferrara VII: Scienze Matematiche 59(1), 127–140 (2013)

    Article  MathSciNet  MATH  Google Scholar 

  31. Lindelöf, E.: Sur la détermination de la croissance des fonctions entières définies par un développement de Taylor. Darb. Bull. 27(2), 213–226 (1903)

    MathSciNet  MATH  Google Scholar 

  32. Malonek, H.: Power series representation for monogenic functions in \({\mathbb{R}}^{m+1}\) based on a permutational product. Complex Var. 15, 181–191 (1990)

    MathSciNet  MATH  Google Scholar 

  33. Nevanlinna, R.: Zur Theorie der meromorphen Funktionen. Acta Math. 46, 1–99 (1925)

    Article  MathSciNet  MATH  Google Scholar 

  34. Pringsheim, A.: Elementare Theorie der ganzen transzendenten Funktionen von endlicher Ordnung. Math. Ann. 58, 257–342 (1904)

    Article  MathSciNet  MATH  Google Scholar 

  35. Ronkin, L.I.: Introduction to the theory of entire functions of several variables. Translations of Mathematical Monographs, vol. 44. American Mathematical Society, VI, Providence RI (1974)

  36. Saleem, M., Abul-Ez, M., Zayed, M.: On polynomial series expansions of Cliffordian functions. Math Methods Appl. Sci. 35, 134–143 (2012)

    Article  MathSciNet  MATH  Google Scholar 

  37. Shang, Y.: Lower bounds for Gaussian Estrada index of graphs. Symmetry 10(8), 325 (2018)

    Article  MATH  Google Scholar 

  38. Simon, M., Suslov, S.: Expansion of analytic functions in q-orthogonal polynomials. Ramanujan J. 19(3), 281–303 (2009)

    Article  MathSciNet  MATH  Google Scholar 

  39. Srivastava, G.S.: A note on growth of generalized Hadamard product of entire functions. Southeast Asian Bull. Math. 33(1), 147–152 (2009)

    MathSciNet  MATH  Google Scholar 

  40. Srivastava, R.K., Kumar, V.: On the order and type of integral functions of several complex variables. Compos. Math. 17, 161–166 (1966)

    MathSciNet  MATH  Google Scholar 

  41. Srivastava, G.S., Kumar, S.: On the generalized order and generalized type of entire monogenic functions. Demonstr. Math. 46(4), 663–677 (2013)

    MathSciNet  MATH  Google Scholar 

  42. Sprössig, W.: Clifford analysis and its applications in mathematical physics. Cubo Matemáitica Educacional 4 2, 253–314 (2002)

    MathSciNet  Google Scholar 

  43. Valiron, G.: Lectures on the General Theory of Integral Functions. Chelsea, New York (1949)

    Google Scholar 

  44. Wiman, A.: Über den Zusammenhang zwischen dem Maximalbetrage einer analytischen Funktion und dem gröten Gliede der zugehörigen Taylorschen Reihe. Acta Math. 37, 305–326 (1914)

    Article  MathSciNet  MATH  Google Scholar 

  45. Whittaker, J., Gattegno, C.: Sur les séries de base de polynbmes quelconques. Gauthier-Villars, Paris (1949)

    Google Scholar 

  46. Zayed, M.: Generalized Hadamard product bases of special monogenic polynomials. Adv. Appl. Clifford Algebras 30, 10 (2020)

    Article  MathSciNet  MATH  Google Scholar 

Download references

Acknowledgements

The author gratefully appreciates the kind support provided by the Deanship of Scientific Research at King Khalid University, Saudi Arabia, under Grant GRP-82-41.

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Correspondence to Mohra Zayed.

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Communicated by V. Ravichandran.

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Zayed, M. Lower Growth of Generalized Hadamard Product Functions in Clifford Setting. Bull. Malays. Math. Sci. Soc. 44, 805–826 (2021). https://doi.org/10.1007/s40840-020-00983-y

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  • DOI: https://doi.org/10.1007/s40840-020-00983-y

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