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Functional Inequalities and Equivalences of Some Estimates

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Inequalities and Applications 2010

Part of the book series: International Series of Numerical Mathematics ((ISNM,volume 161))

Abstract

The purpose of the chapter is to deal with some old and a few new functional inequalities which are motivated by well-known estimates on the real line or on an interval which involve the exponential function. We are concerned with the following six functional inequalities:

and

$$ (1+y)f(x) \leq f(x+y).$$

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References

  1. Alsina, C., Garcia-Roig, J.L.: On some inequalities characterizing the exponential function. Arch. Math. (Brno) 26, 67–71 (1990)

    MathSciNet  MATH  Google Scholar 

  2. Alsina, C., Ger, R.: On some inequalities and stability results related to the exponential function. J. Inequal. Appl. 2, 373–380 (1998)

    MathSciNet  MATH  Google Scholar 

  3. Burk, F.: The geometric, logarithmic and arithmetic mean inequality. Am. Math. Mon. 94, 527–528 (1987)

    Article  MathSciNet  Google Scholar 

  4. Carlson, B.C.: The logarithmic mean. Am. Math. Mon. 79, 615–618 (1972)

    Article  MathSciNet  Google Scholar 

  5. Duren, P.L., Lipsich, H.D.: Elementary problems and solutions: Solutions: E1331. Am. Math. Mon. 66, 313 (1959)

    Article  MathSciNet  Google Scholar 

  6. Fechner, W.: Some inequalities connected with the exponential function. Arch. Math. (Brno) 44, 217–222 (2008)

    MathSciNet  MATH  Google Scholar 

  7. Fechner, W.: On some functional inequalities related to the logarithmic mean. Acta Math. Hung. 128, 36–45 (2010)

    Article  MathSciNet  Google Scholar 

  8. Kuczma, M.: A characterization of the exponential and logarithmic functions by functional equations. Fundam. Math. 52, 283–288 (1963)

    Article  MathSciNet  Google Scholar 

  9. Kuczma, M.: Functional equations in a single variable. In: Monografie Matematyczne, vol. 46. PWN—Polish Scientific Publishers, Warszawa (1968)

    Google Scholar 

  10. Kuczma, M.: On a new characterization of the exponential functions. Ann. Pol. Math. 21, 39–46 (1968)

    Article  MathSciNet  Google Scholar 

  11. Kuczma, M.: An Introduction to the Theory of Functional Equations and Inequalities, 2nd edn. Birkhäuser, Basel–Boston–Berlin (2009)

    Book  Google Scholar 

  12. Kuczma, M., Choczewski, B., Ger, R.: Iterative Functional Equations. Encyclopedia of Mathematics and Its Applications, vol. 32. Cambridge Univ. Press, Cambridge–New York–Port Chester–Melbourne–Sydney (1990)

    Book  Google Scholar 

  13. Leach, E.B., Sholander, M.C.: Extended mean values II. J. Math. Anal. Appl. 92, 207–223 (1983)

    Article  MathSciNet  Google Scholar 

  14. Mitrinović, D.S.: Nejednakosti. Izdavačko Preduzeće, Gradevinska Knjiga, Beograd (1965)

    Google Scholar 

  15. Pólya, G., Szegő, G.: Isoperimetric Inequalities in Mathematical Physics. Princeton University Press, Princeton (1951)

    Book  Google Scholar 

  16. Poonen, B.: Solution to problem E3127-1986. Am. Math. Mon. 95, 457 (1988)

    Article  Google Scholar 

  17. Sándor, J.: A note on some inequalities for means. Arch. Math. (Basel) 56, 471–473 (1991)

    Article  MathSciNet  Google Scholar 

  18. Shelupsky, D.J.: Problem E3127. Am. Math. Mon. 93, 60 (1986)

    MathSciNet  Google Scholar 

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Correspondence to Włodzimierz Fechner .

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Fechner, W. (2012). Functional Inequalities and Equivalences of Some Estimates. In: Bandle, C., Gilányi, A., Losonczi, L., Plum, M. (eds) Inequalities and Applications 2010. International Series of Numerical Mathematics, vol 161. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-0249-9_18

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