본문 바로가기
KERD
논문KCI 등재

Bounds and inequalities of the modified Lommel functions

0

조회

0

다운로드

0

인용

0

참고문헌

키워드

주제분류수학

초록

This article studies the monotonicity, log-convexity of the modified Lommel functions by using its power series and infinite product representation. Some properties for the ratio of the modified Lommel functions with the Lommel function, $\sinh$ and $\cosh$ are also discussed. As a consequence, Tur\'an type and reverse Tur\'an type inequalities are given. A Rayleigh type function for the Lommel functions are derived and as an application, we obtain the Redheffer-type inequality.

Abstract

This article studies the monotonicity, log-convexity of the modified Lommel functions by using its power series and infinite product representation. Some properties for the ratio of the modified Lommel functions with the Lommel function, $\sinh$ and $\cosh$ are also discussed. As a consequence, Tur\'an type and reverse Tur\'an type inequalities are given. A Rayleigh type function for the Lommel functions are derived and as an application, we obtain the Redheffer-type inequality.

참고문헌 (19)

  1. G. D. Anderson, "Inequalities for quasiconformal mappings in space", Pacic J. Math, 160(1), pp.1~18 (1993)
  2. A. W. Babister, "Transcendental Functions Satisfying Nonhomogeneous Linear Dierential Equations" (1967), The Macmillan Co
  3. Baricz, "Turan-type inequalities for some Lommel functions of the rst kind", Proc. Edinb. Math. Soc, 59(3), pp.569~579 (2016)
  4. M. Biernacki, "On the monotonity of certain functionals in the theory of analytic functions", Ann. Univ. Mariae Curie-Sk lodowska. Sect. A, 9, pp.135~147 (1955)
  5. Y.-M. Chiang, "special functions and related polynomials", J. Reine Angew. Math, 651, pp.127~164 (2011)
  6. R. G. Cooke, "On the Sign of Lommel's Function", J. London Math. Soc, 7(4), pp.281~283 (1932)
  7. M. L. Glasser, "Integral representations for the exceptional univariate Lommel functions", J. Phys. A, 43(15), pp.155207~ (2010)
  8. S. Goldstein, "On the vortex theory of screw propellers", Proc. R. Soc. Lond. A, 23, pp.44065~ (1929)
  9. S. Koumandos, "The zeros of certain Lommel functions", Proc. Amer. Math. Soc, 140(9), pp.3091~3100 (2012)
  10. E. C. J. Lommel, "Studien Über die Bessel'schen Functionen", B.G. Teubner, Leipzig (1868)
  11. E. Von Lommel, "Ueber eine mit den Bessel'schen Functionen verwandte Function", Math. Ann, 9(3), pp.425~444 (1875)
  12. F. W. J. Olver, "NIST Handbook of Mathematical Functions", U.S. Department of Commerce, National Institute of Standards and Technology, ~ (2010)
  13. F. B. Pidduck, "Lommel's functions of small argument", Quart. J. Math., Oxford Ser, 17, pp.193~196 (1946)
  14. A. B. Rao, "Expansion formulae for Lommel's functions", Indian J. Pure Appl. Math, 7(4), pp.418~420 (1976)
  15. C. N. Rollinger, "Lommel functions with imaginary argument", Quart. Appl. Math, 21, pp.343~349 (1963)
  16. J. Steinig, "The sign of Lommel's function", Trans. Amer. Math. Soc, 163, pp.123~129 (1972)
  17. P. Szymanski, "On the Integral Representations of the Lommel Functions", Proc. London Math. Soc. (2), 40(1), pp.71~82 (1935)
  18. G. N. Watson, "A Treatise on the Theory of Bessel Functions" (1944), Cambridge University Press
  19. C. H. Ziener, "The inverse Laplace transform of the modied Lommel functions", Integral Transforms Spec. Funct, 24(2), pp.141~155 (2013)

이 간행물의 다른 논문 (27건)