[1] M. Abramowitz and I. A. Stegun (Eds), Handbook of Mathematical Functions with
Formulas, Graphs, and Mathematical Tables, National Bureau of Standards, Applied
Mathematics Series 55, 10th printing, Washington, 1972.
[2] J. A. Adell and A. Lekuona, Dirichlet’s eta and beta functions: concavity and fast
computation of their derivatives, J. Number Theory 157, 215–222, 2015.
[3] J. M. Borwein, D. H. Bailey, and R. Girgensohn, Experimentation in Mathematics:
Computational Paths to Discovery, A K Peters, Ltd., Natick, MA, 2004.
[4] B.-N. Guo and F. Qi, Increasing property and logarithmic convexity of functions involving
Riemann zeta function, https://arxiv.org/abs/2201.06970, 2022.
[5] Kh. Hessami Pilehrood and T. Hessami Pilehrood, Series acceleration formulas for
beta values, Discrete Math. Theor. Comput. Sci. 12 (2), 223–236, 2010.
[6] D. Lim and F. Qi, Increasing property and logarithmic convexity of two functions
involving Dirichlet eta function, J. Math. Inequal. 16 (2), 463–469, 2022.
[7] F. Qi, Notes on a double inequality for ratios of any two neighbouring non-zero
Bernoulli numbers, Turkish J. Anal. Number Theory 6 (5), 129–131, 2018.
[8] F. Qi, A double inequality for the ratio of two non-zero neighbouring Bernoulli numbers,
J. Comput. Appl. Math. 351, 1–5, 2019.
[9] F. Qi, Decreasing properties of two ratios defined by three and four polygamma functions,
C. R. Math. Acad. Sci. Paris 360, 89–101, 2022.
[10] F. Qi, W.-H. Li, S.-B. Yu, X.-Y. Du, and B.-N. Guo, A ratio of finitely many gamma
functions and its properties with applications, Rev. R. Acad. Cienc. Exactas Fís. Nat.
Ser. A Math. RACSAM. 115 (2), 2021.
[11] Y. Shuang, B.-N. Guo, and F. Qi, Logarithmic convexity and increasing property of
the Bernoulli numbers and their ratios, Rev. R. Acad. Cienc. Exactas Fís. Nat. Ser.
A Mat. RACSAM 115 (3), 2021.
[12] N. M. Temme, Special Functions: An Introduction to Classical Functions of Mathematical
Physics, A Wiley-Interscience Publication, John Wiley & Sons, Inc., New
York, 1996.
[13] C.-F. Wei, Integral representations and inequalities of extended central binomial coefficients,
Math. Methods Appl. Sci. 45 (9), 5412–5422, 2022.
[14] Z.-H. Yang and J.-F. Tian, Sharp bounds for the ratio of two zeta functions, J. Comput.
Appl. Math. 364, 112359, 2020.
[15] L. Zhu, New bounds for the ratio of two adjacent even-indexed Bernoulli numbers,
Rev. R. Acad. Cienc. Exactas Fís. Nat. Ser. A Mat. RACSAM 114 (2), 2020.
Increasing property and logarithmic convexity concerning Dirichlet beta function, Euler numbers, and their ratios
In the paper, by virtue of an integral representation of the Dirichlet beta function, with the aid of a relation between the Dirichlet beta function and the Euler numbers, and by means of a monotonicity rule for the ratio of two definite integrals with a parameter, the author finds increasing property and logarithmic convexity of two functions and two sequences involving the Dirichlet beta function, the Euler numbers, and their ratios.
[1] M. Abramowitz and I. A. Stegun (Eds), Handbook of Mathematical Functions with
Formulas, Graphs, and Mathematical Tables, National Bureau of Standards, Applied
Mathematics Series 55, 10th printing, Washington, 1972.
[2] J. A. Adell and A. Lekuona, Dirichlet’s eta and beta functions: concavity and fast
computation of their derivatives, J. Number Theory 157, 215–222, 2015.
[3] J. M. Borwein, D. H. Bailey, and R. Girgensohn, Experimentation in Mathematics:
Computational Paths to Discovery, A K Peters, Ltd., Natick, MA, 2004.
[4] B.-N. Guo and F. Qi, Increasing property and logarithmic convexity of functions involving
Riemann zeta function, https://arxiv.org/abs/2201.06970, 2022.
[5] Kh. Hessami Pilehrood and T. Hessami Pilehrood, Series acceleration formulas for
beta values, Discrete Math. Theor. Comput. Sci. 12 (2), 223–236, 2010.
[6] D. Lim and F. Qi, Increasing property and logarithmic convexity of two functions
involving Dirichlet eta function, J. Math. Inequal. 16 (2), 463–469, 2022.
[7] F. Qi, Notes on a double inequality for ratios of any two neighbouring non-zero
Bernoulli numbers, Turkish J. Anal. Number Theory 6 (5), 129–131, 2018.
[8] F. Qi, A double inequality for the ratio of two non-zero neighbouring Bernoulli numbers,
J. Comput. Appl. Math. 351, 1–5, 2019.
[9] F. Qi, Decreasing properties of two ratios defined by three and four polygamma functions,
C. R. Math. Acad. Sci. Paris 360, 89–101, 2022.
[10] F. Qi, W.-H. Li, S.-B. Yu, X.-Y. Du, and B.-N. Guo, A ratio of finitely many gamma
functions and its properties with applications, Rev. R. Acad. Cienc. Exactas Fís. Nat.
Ser. A Math. RACSAM. 115 (2), 2021.
[11] Y. Shuang, B.-N. Guo, and F. Qi, Logarithmic convexity and increasing property of
the Bernoulli numbers and their ratios, Rev. R. Acad. Cienc. Exactas Fís. Nat. Ser.
A Mat. RACSAM 115 (3), 2021.
[12] N. M. Temme, Special Functions: An Introduction to Classical Functions of Mathematical
Physics, A Wiley-Interscience Publication, John Wiley & Sons, Inc., New
York, 1996.
[13] C.-F. Wei, Integral representations and inequalities of extended central binomial coefficients,
Math. Methods Appl. Sci. 45 (9), 5412–5422, 2022.
[14] Z.-H. Yang and J.-F. Tian, Sharp bounds for the ratio of two zeta functions, J. Comput.
Appl. Math. 364, 112359, 2020.
[15] L. Zhu, New bounds for the ratio of two adjacent even-indexed Bernoulli numbers,
Rev. R. Acad. Cienc. Exactas Fís. Nat. Ser. A Mat. RACSAM 114 (2), 2020.
Qi, F., & Yao, Y.-h. (2023). Increasing property and logarithmic convexity concerning Dirichlet beta function, Euler numbers, and their ratios. Hacettepe Journal of Mathematics and Statistics, 52(1), 17-22. https://doi.org/10.15672/hujms.1099250
AMA
Qi F, Yao Yh. Increasing property and logarithmic convexity concerning Dirichlet beta function, Euler numbers, and their ratios. Hacettepe Journal of Mathematics and Statistics. February 2023;52(1):17-22. doi:10.15672/hujms.1099250
Chicago
Qi, Feng, and Yong-hong Yao. “Increasing Property and Logarithmic Convexity Concerning Dirichlet Beta Function, Euler Numbers, and Their Ratios”. Hacettepe Journal of Mathematics and Statistics 52, no. 1 (February 2023): 17-22. https://doi.org/10.15672/hujms.1099250.
EndNote
Qi F, Yao Y-h (February 1, 2023) Increasing property and logarithmic convexity concerning Dirichlet beta function, Euler numbers, and their ratios. Hacettepe Journal of Mathematics and Statistics 52 1 17–22.
IEEE
F. Qi and Y.-h. Yao, “Increasing property and logarithmic convexity concerning Dirichlet beta function, Euler numbers, and their ratios”, Hacettepe Journal of Mathematics and Statistics, vol. 52, no. 1, pp. 17–22, 2023, doi: 10.15672/hujms.1099250.
ISNAD
Qi, Feng - Yao, Yong-hong. “Increasing Property and Logarithmic Convexity Concerning Dirichlet Beta Function, Euler Numbers, and Their Ratios”. Hacettepe Journal of Mathematics and Statistics 52/1 (February 2023), 17-22. https://doi.org/10.15672/hujms.1099250.
JAMA
Qi F, Yao Y-h. Increasing property and logarithmic convexity concerning Dirichlet beta function, Euler numbers, and their ratios. Hacettepe Journal of Mathematics and Statistics. 2023;52:17–22.
MLA
Qi, Feng and Yong-hong Yao. “Increasing Property and Logarithmic Convexity Concerning Dirichlet Beta Function, Euler Numbers, and Their Ratios”. Hacettepe Journal of Mathematics and Statistics, vol. 52, no. 1, 2023, pp. 17-22, doi:10.15672/hujms.1099250.
Vancouver
Qi F, Yao Y-h. Increasing property and logarithmic convexity concerning Dirichlet beta function, Euler numbers, and their ratios. Hacettepe Journal of Mathematics and Statistics. 2023;52(1):17-22.