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Some new quicker continued fraction approximations for the gamma function related to the Nemes’ formula

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Abstract

In this paper, based on Nemes’ formula, we construct a new quicker continued fraction approximation of the gamma function. Some inequalities are established. Finally, for demonstrating the superiority of our new series over the Nemes’ formula, the Gosper’s formula, the Windschitl’s formula, the Stielties’ formula and the Striling’s formula, some numerical computations are given.

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References

  1. Char, B.: On Stieltjes’ continued fraction for the gamma function. Math. Comp. 34(150), 547–551 (1980)

    MathSciNet  MATH  Google Scholar 

  2. Abramowitz, M., Stegun, I.A.: Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables. Nation Bureau of Standards, Applied Mathematical Series, 55, 9th Printing. Dover, New York (1972)

    Google Scholar 

  3. Alzer, H.: On some inequalities for the gamma and psi functions. Math. Comp. 66(217), 373–389 (1997)

    Article  MathSciNet  MATH  Google Scholar 

  4. Burnside, W.: A rapidly convergent series for log N!. Messenger Math. 46, 157–159 (1917)

    Google Scholar 

  5. Gosper, R.: Decision procedure for indefinite hypergeometric summation. Proc. Natl. Acad. Sci. USA 75, 40–42 (1978)

    Article  MathSciNet  MATH  Google Scholar 

  6. Mortici, C.: Sharp inequalities related to Gospers formula. Comptes Rendus mathematique 348(3–4), 137–140 (2010)

    Article  MathSciNet  MATH  Google Scholar 

  7. Mortici, C.: Improved convergence towards generalized Euler-Mascheroni constant. Appl. Math. Comput. 215(9), 3443–3448 (2010)

    Article  MathSciNet  MATH  Google Scholar 

  8. Mortici, C.: Very accurate estimates of the polygamma functions. Asymptot. Anal. 68(3), 125–134 (2010)

    MathSciNet  MATH  Google Scholar 

  9. Mortici, C.: A quicker convergence toward the gamma constant with the logarithm term involving the constant e. Carpathian J. Math. 26(1), 86–91 (2010)

    MathSciNet  MATH  Google Scholar 

  10. Mortici, C.: On new sequences converging towards the Euler-Mascheroni constant. Comp. Math. Appl. 59(8), 2610–2614 (2010)

    Article  MathSciNet  MATH  Google Scholar 

  11. Mortici, C.: Product approximations via asymptotic integration. Amer. Math. Mon. 117(5), 434–441 (2010)

    Article  MathSciNet  MATH  Google Scholar 

  12. Mortici, C.: On Gospers formula for the gamma function. J. Math. Inequalities 5(4), 611–614 (2011)

    Article  MathSciNet  MATH  Google Scholar 

  13. Mortici, C.: A new Stirling series as continued fraction. Numer. Algor. 56(1), 17–26 (2011)

    Article  MathSciNet  MATH  Google Scholar 

  14. Mortici, C.: A continued fraction approximation of the gamma function. J. Math. Anal. Appl. 402, 405–410 (2013)

    Article  MathSciNet  MATH  Google Scholar 

  15. Nemes, G.: New asymptotic expansion for the Gamma function. Arch. Math. 95, 161–169 (2010)

    Article  MathSciNet  MATH  Google Scholar 

  16. Nemes, G.: More accurate approximations for the gamma function. Thai. J. Math. 9(1), 21–28 (2011)

    MathSciNet  MATH  Google Scholar 

  17. http://www.rskey.org/gamma.htm

  18. Lu, D., Wang, X.: A generated approximation related to Gosper’s formula and Ramanujan’s formula. J. Math. Anal. Appl. 406, 287–292 (2013)

    Article  MathSciNet  MATH  Google Scholar 

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Correspondence to Dawei Lu.

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Lu, D., Ma, C. Some new quicker continued fraction approximations for the gamma function related to the Nemes’ formula. Numer Algor 70, 825–833 (2015). https://doi.org/10.1007/s11075-015-9975-8

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  • DOI: https://doi.org/10.1007/s11075-015-9975-8

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