Tian, Jing-Feng; Yang, Zhen-Hang Absolute monotonicity of the accuracy of Ramanujan approximations for perimeter of an ellipse. (English) Zbl 1524.33080 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 117, No. 3, Paper No. 135, 16 p. (2023). MSC: 33E05 26A48 26E60 PDFBibTeX XMLCite \textit{J.-F. Tian} and \textit{Z.-H. Yang}, Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 117, No. 3, Paper No. 135, 16 p. (2023; Zbl 1524.33080) Full Text: DOI
Tian, Jing-Feng; Yang, Zhenhang; Ha, Ming-Hu; Xing, Hong-Jie A family of high order approximations of Ramanujan type for perimeter of an ellipse. (English) Zbl 1467.33021 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 115, No. 2, Paper No. 85, 20 p. (2021). MSC: 33E05 26A48 26D15 40A25 41A60 PDFBibTeX XMLCite \textit{J.-F. Tian} et al., Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 115, No. 2, Paper No. 85, 20 p. (2021; Zbl 1467.33021) Full Text: DOI
He, Zai-Yin; Wang, Miao-Kun; Jiang, Yue-Ping; Chu, Yu-Ming Bounds for the perimeter of an ellipse in terms of power means. (English) Zbl 1456.26023 J. Math. Inequal. 14, No. 3, 887-899 (2020). Reviewer: József Sándor (Cluj-Napoca) MSC: 26E60 33E05 33C75 PDFBibTeX XMLCite \textit{Z.-Y. He} et al., J. Math. Inequal. 14, No. 3, 887--899 (2020; Zbl 1456.26023) Full Text: DOI
Wang, Miao-Kun; Chu, Yu-Ming; Jiang, Yue-Ping; Qiu, Song-Liang Bounds of the perimeter of an ellipse using arithmetic, geometric and harmonic means. (English) Zbl 1285.26053 Math. Inequal. Appl. 17, No. 1, 101-111 (2014). MSC: 26E60 33E05 33C05 41A10 PDFBibTeX XMLCite \textit{M.-K. Wang} et al., Math. Inequal. Appl. 17, No. 1, 101--111 (2014; Zbl 1285.26053) Full Text: DOI
Chu, Yu-Ming; Wang, Miao-Kun; Qiu, Song-Liang; Jiang, Yue-Ping Bounds for complete elliptic integrals of the second kind with applications. (English) Zbl 1247.33034 Comput. Math. Appl. 63, No. 7, 1177-1184 (2012). MSC: 33E05 33F05 PDFBibTeX XMLCite \textit{Y.-M. Chu} et al., Comput. Math. Appl. 63, No. 7, 1177--1184 (2012; Zbl 1247.33034) Full Text: DOI
Wang, Miao-Kun; Chu, Yu-Ming; Qiu, Song-Liang; Jiang, Yue-Ping Bounds for the perimeter of an ellipse. (English) Zbl 1248.33024 J. Approx. Theory 164, No. 7, 928-937 (2012). Reviewer: Leonid Golinskii (Kharkov) MSC: 33C45 51M25 PDFBibTeX XMLCite \textit{M.-K. Wang} et al., J. Approx. Theory 164, No. 7, 928--937 (2012; Zbl 1248.33024) Full Text: DOI
Chandrupatla, Tirupathi R.; Osler, Thomas J. The perimeter of an ellipse. (English) Zbl 1217.51002 Math. Sci. 35, No. 2, 122-131 (2010). Reviewer: Rolf Riesinger (Wien) MSC: 51-04 51M25 33C20 97I99 97G99 PDFBibTeX XMLCite \textit{T. R. Chandrupatla} and \textit{T. J. Osler}, Math. Sci. 35, No. 2, 122--131 (2010; Zbl 1217.51002)
Barnard, Roger W.; Pearce, Kent; Schovanec, Lawrence Inequalities for the perimeter of an ellipse. (English) Zbl 0985.26009 J. Math. Anal. Appl. 260, No. 2, 295-306 (2001). Reviewer: Andrei Martínez Finkelshtein (Almeria) MSC: 26D07 33C05 33C75 41A30 PDFBibTeX XMLCite \textit{R. W. Barnard} et al., J. Math. Anal. Appl. 260, No. 2, 295--306 (2001; Zbl 0985.26009) Full Text: DOI