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Invariance in the Family of Weighted Gini Means

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Handbook of Functional Equations

Part of the book series: Springer Optimization and Its Applications ((SOIA,volume 95))

Abstract

Given two means M and N, the mean P is called \((M,N)\)-invariant if \(P(M,\) \(N)=P.\) At the same time the mean N is called complementary to M with respect to P. We use the method of series expansion of means to determine the complementary with respect to a weighted Gini mean. The invariance in the family of weighted Gini means is also studied. The computer algebra Maple was used for solving some complicated systems of equations.

Mathematics subject classification(2000): 26E60

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References

  1. Baják, S., Páles, Z.: Invariance equation for generalized quasi-arithmetic means. Aequationes Math. 77, 133–145 (2009)

    Article  MATH  MathSciNet  Google Scholar 

  2. Baják, S., Páles, Z.: Computer aided solution of the invariance equation for two-variable Gini means. Comput. Math. Appl. 58, 334–340 (2009)

    Article  MATH  MathSciNet  Google Scholar 

  3. Borwein, J.M., Borwein, P.B.: Pi and the AGM—A Study in Analytic Number Theory and Computational Complexity. Wiley, New York (1987)

    MATH  Google Scholar 

  4. Brenner, J.L., Mays, M.E.: Some reproducing identities for families of mean values. Aequ. Math. 33, 106–113 (1987)

    Article  MATH  MathSciNet  Google Scholar 

  5. Bullen, P.S.: Handbook of Means and Their Inequalities. Kluwer Academic Publishers, Dordrecht (2003)

    Book  MATH  Google Scholar 

  6. Costin, I.: Series expansion of means. International Symposium Specialization, Integration and Development, Section: Quantitative Economics, Babeş-Bolyai University Cluj-Napoca, Romania 115–122, (2003)

    Google Scholar 

  7. Costin, I.: Generalized inverses of means. Carpathian J. Math. 20(2), 169–175 (2004)

    MATH  MathSciNet  Google Scholar 

  8. Costin, I.: Complementariness with respect to power means. Automat. Comput. Appl. Math. 13(1), 69–77 (2004)

    MathSciNet  Google Scholar 

  9. Costin, I.: Invariance in the class of weighted power means. In: “The 9th International Symposium on Symbolic and Numerical Algorithms for Scientific Computing” SYNASC 2007, Timisoara, Romania, 2007, IEEE Computer Society Conference Publishing Services, Los Alamos, California, 131–133.

    Google Scholar 

  10. Costin, I.: Complementary of weighted power means. Automat. Comput. Appl. Math. 16(2), 25–31 (2007)

    Google Scholar 

  11. Costin, I., Toader, G.: A weighted Gini mean. International Symposium Specialization, Integration and Development, Section: Quantitative Economics, Babeş-Bolyai University Cluj-Napoca, Romania 109–114, (2003)

    Google Scholar 

  12. Costin, I., Toader, G.: Generalized inverses of Gini means. Automat. Comput. Appl. Math. 15(1), 111–115 (2006)

    MathSciNet  Google Scholar 

  13. Costin, I., Toader, G.: Invariance in the class of weighted Lehmer means. J. Ineq. Pure Appl. Math. 9(2), 7 (2008) (Article 54). http://www.emis.de/journals/JIPAM/article986.html?sid=986. Accessed 20 Feb 2013

    MathSciNet  Google Scholar 

  14. Costin, I., Toader, G.: Invariance of a weighted power mean in the class of weighted Gini means. Automat. Comput. Appl. Math. 21(1), 35–43 (2012)

    MathSciNet  Google Scholar 

  15. Costin, I., Toader, G.: Invariance of a weighted Lehmer mean in the class of weighted Gini means. Automat. Comput. Appl. Math. 22(1), 89–101 (2013)

    Google Scholar 

  16. Daróczy, Z., Páles, Z.: Gauss-composition of means and the solution of the Matkowski-Sutô problem. Publ. Math. Debrecen 61(1–2), 157–218 (2002).

    MATH  MathSciNet  Google Scholar 

  17. Daróczy, Z., Páles, Z.: On functional equations involving means. Publ. Math. Debrecen 62, 3–4, 363–377 (2003).

    MATH  MathSciNet  Google Scholar 

  18. Daróczy, Z., Páles, Z.: The Matkowski-Sutô problem for weighted quasi-arithmetic means. Acta Math. Hung. 100(3), 237–243 (2003)

    Article  MATH  Google Scholar 

  19. Daróczy, Z., Maksa, G., Páles, Z.: Functional equations involving means and their Gauss compositions. Proc. Amer. Math. Soc. 134(2), 521–530 (2005)

    Article  Google Scholar 

  20. Domsta, J., Matkowski, J.: Invariance of the arithmetic mean with respect to special mean-type mappings. Aequationes Math. 71, 70–85 (2006)

    Article  MATH  MathSciNet  Google Scholar 

  21. Gini, C.: Le Medie. Unione Tipografico Torinese, Milano (1958)

    Google Scholar 

  22. Głazowska, D., Matkowski, J.: An invariance of geometric mean with respect to Lagrangian means. J. Math. Anal. Appl. 331, 1187–1199 (2007)

    Article  MATH  MathSciNet  Google Scholar 

  23. Gould, H.W.: Coefficient identities for powers of Taylor and Dirichlet series. Amer. Math. Monthly. 81, 3–14 (1974)

    Article  MATH  MathSciNet  Google Scholar 

  24. Gould, H.W., Mays, M.E.: Series expansions of means. J. Math. Anal. Appl. 101(2), 611–621 (1984)

    Article  MATH  MathSciNet  Google Scholar 

  25. Heck, A.: Introduction to Maple, 3rd edn. Springer, New York (2003)

    Book  MATH  Google Scholar 

  26. Jarczyk, J.: Invariance in the class of weighted quasi-arithmetic means with continuous generators. Publ. Math. Debrecen. 71, 279–294 (2007)

    MATH  MathSciNet  Google Scholar 

  27. Jarczyk, J., Matkowski, J.: Invariance in the class of weighted quasi-arithmetic means. Ann. Polon. Math. 88.1, 39–51 (2006).

    Article  MathSciNet  Google Scholar 

  28. Lehmer, D.H.: On the compounding of certain means. J. Math. Anal. Appl. 36, 183–200 (1971)

    Article  MATH  MathSciNet  Google Scholar 

  29. Makó, Z., Páles, Z.: The invariance of the arithmetic mean with respect to generalized quasi-arithmetic means. J. Math. Anal. Appl. 353, 8–23 (2009)

    Article  MATH  MathSciNet  Google Scholar 

  30. Matkowski, J.: Invariant and complementary quasi-arithmetic means. Aequat. Math. 57, 87–107 (1999)

    Article  MATH  MathSciNet  Google Scholar 

  31. Matkowski, J.: On invariant generalized Beckenbach-Gini means. Functional Equations—Results and Advances In: Daróczy, Z., Páles, Z. (eds.) Advances in Mathematics, vol. 3, pp. 219–230. Kluwer Acad. Publ., Dordrecht (2002)

    Google Scholar 

  32. Matkowski, J.: Lagrangian mean-type mappings for which the arithmetic mean is invariant. J. Math. Anal. Appl. 309, 15–24 (2005)

    Article  MATH  MathSciNet  Google Scholar 

  33. Sutô, O.: Studies on some functional equations. I, Tôhoku Math. J. 6, 1–15 (1914); II, Tôhoku Math. J. 6, 82–101 (1914)

    Google Scholar 

  34. Toader, G.: Some remarks on means. Anal. Numér. Théor. Approx. 20, 97–109 (1991)

    MATH  MathSciNet  Google Scholar 

  35. Toader, G., Toader, S.: Greek Means and the Arithmetic-Geometric Mean. RGMIA Monographs, Victoria University, 2005. http://www.staff.vu.edu.au/RGMIA/monographs/toader.htm. Accessed 20 Feb 2013.

  36. Toader, S., Toader, G.: Complementary of a Greek mean with respect to Lehmer means. Automat. Comput. Appl. Math. 15(1), 319–324 (2006)

    Google Scholar 

  37. Toader, G., Toader, S.: Means and generalized means. J. Ineq. Pure Appl. Math. 8(2), 6 (2007) Article 45. http://www.emis.de/journals/JIPAM/issues93.op=viewissue&issue=93. Accessed 20 Feb 2013.

    MathSciNet  Google Scholar 

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Correspondence to Iulia Costin .

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Costin, I., Toader, G. (2014). Invariance in the Family of Weighted Gini Means. In: Rassias, T. (eds) Handbook of Functional Equations. Springer Optimization and Its Applications, vol 95. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-1246-9_6

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