Qian, Cheng; Chen, Xiao-Diao; Malesevic, Branko Tighter bounds for the inequalities of sinc function based on reparameterization. (English) Zbl 1487.26022 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 116, No. 1, Paper No. 29, 38 p. (2022). MSC: 26D05 33B10 PDF BibTeX XML Cite \textit{C. Qian} et al., Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 116, No. 1, Paper No. 29, 38 p. (2022; Zbl 1487.26022) Full Text: DOI OpenURL
Chen, Xiao-Diao; Wang, Hui; Yu, Junle; Cheng, Zhanglin; Zhu, Ping New bounds of sinc function by using a family of exponential functions. (English) Zbl 07420285 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 116, No. 1, Paper No. 16, 17 p. (2022). MSC: 33B10 26D05 PDF BibTeX XML Cite \textit{X.-D. Chen} et al., Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 116, No. 1, Paper No. 16, 17 p. (2022; Zbl 07420285) Full Text: DOI OpenURL
Shuang, Ye; Guo, Bai-Ni; Qi, Feng Logarithmic convexity and increasing property of the Bernoulli numbers and their ratios. (English) Zbl 1476.11060 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 115, No. 3, Paper No. 135, 12 p. (2021). MSC: 11B68 11M06 26A48 26A51 26D15 33B10 PDF BibTeX XML Cite \textit{Y. Shuang} et al., Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 115, No. 3, Paper No. 135, 12 p. (2021; Zbl 1476.11060) Full Text: DOI OpenURL
Bagul, Yogesh J.; Chesneau, Christophe; Kostić, Marko On the Cusa-Huygens inequality. (English) Zbl 1466.26014 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 115, No. 1, Paper No. 29, 12 p. (2021). MSC: 26D05 26D07 33B30 PDF BibTeX XML Cite \textit{Y. J. Bagul} et al., Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 115, No. 1, Paper No. 29, 12 p. (2021; Zbl 1466.26014) Full Text: DOI OpenURL
Wang, Fei; Guo, Bai-Ni; Qi, Feng Monotonicity and inequalities related to complete elliptic integrals of the second kind. (English) Zbl 1484.33024 AIMS Math. 5, No. 3, 2732-2742 (2020). MSC: 33E05 26A48 26D15 33C75 PDF BibTeX XML Cite \textit{F. Wang} et al., AIMS Math. 5, No. 3, 2732--2742 (2020; Zbl 1484.33024) Full Text: DOI OpenURL
Zhu, Ling Some new bounds for Sinc function by simultaneous approximation of the base and exponential functions. (English) Zbl 1434.33003 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 114, No. 2, Paper No. 81, 17 p. (2020). Reviewer: Rob Corless (London, ON) MSC: 33B10 26D05 PDF BibTeX XML Cite \textit{L. Zhu}, Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 114, No. 2, Paper No. 81, 17 p. (2020; Zbl 1434.33003) Full Text: DOI OpenURL
Qi, Feng; Sooppy Nisar, Kottakkaran; Rahman, Gauhar Convexity and inequalities related to extended beta and confluent hypergeometric functions. (English) Zbl 1486.33002 AIMS Math. 4, No. 5, 1499-1507 (2019). MSC: 33B15 26A51 26D07 26D15 PDF BibTeX XML Cite \textit{F. Qi} et al., AIMS Math. 4, No. 5, 1499--1507 (2019; Zbl 1486.33002) Full Text: DOI OpenURL
Yang, Zhen-Hang; Tian, Jing-Feng Convexity and monotonicity for the elliptic integrals of the first kind and applications. (English) Zbl 07472206 Appl. Anal. Discrete Math. 13, No. 1, 240-260 (2019). MSC: 33C05 33E05 PDF BibTeX XML Cite \textit{Z.-H. Yang} and \textit{J.-F. Tian}, Appl. Anal. Discrete Math. 13, No. 1, 240--260 (2019; Zbl 07472206) Full Text: DOI arXiv OpenURL
Luo, Min-Jie; Raina, Ravinder Krishna Certain inequalities for the modified Bessel-type function. (English) Zbl 07459048 J. Inequal. Appl. 2019, Paper No. 20, 15 p. (2019). MSC: 26D15 33B20 33C10 PDF BibTeX XML Cite \textit{M.-J. Luo} and \textit{R. K. Raina}, J. Inequal. Appl. 2019, Paper No. 20, 15 p. (2019; Zbl 07459048) Full Text: DOI OpenURL
You, Xu; Chen, Di-Rong Improved approximation formulas and inequalities for the Wallis ratio. (English) Zbl 1412.33005 Bull. Iran. Math. Soc. 45, No. 3, 783-789 (2019). MSC: 33B15 26A48 26D07 PDF BibTeX XML Cite \textit{X. You} and \textit{D.-R. Chen}, Bull. Iran. Math. Soc. 45, No. 3, 783--789 (2019; Zbl 1412.33005) Full Text: DOI OpenURL
Sooppy Nisar, Kottakkaran; Qi, Feng; Rahman, Gauhar; Mubeen, Shahid; Arshad, Muhammad Some inequalities involving the extended gamma function and the Kummer confluent hypergeometric \(k\)-function. (English) Zbl 07445851 J. Inequal. Appl. 2018, Paper No. 135, 12 p. (2018). MSC: 33B15 33C15 33B20 33C05 41A60 PDF BibTeX XML Cite \textit{K. Sooppy Nisar} et al., J. Inequal. Appl. 2018, Paper No. 135, 12 p. (2018; Zbl 07445851) Full Text: DOI OpenURL
Qi, Feng; Rahman, Gauhar; Hussain, Sardar Muhammad; Du, Wei-Shih; Nisar, Kottakkaran Sooppy Some inequalities of Čebyšev type for conformable \(k\)-fractional integral operators. (English) Zbl 1423.26013 Symmetry 10, No. 11, Paper No. 614, 8 p. (2018). MSC: 26A33 26D10 26D15 33B20 PDF BibTeX XML Cite \textit{F. Qi} et al., Symmetry 10, No. 11, Paper No. 614, 8 p. (2018; Zbl 1423.26013) Full Text: DOI OpenURL
Qi, Feng; Shi, Xiao-Ting; Liu, Fang-Fang; Yang, Zhen-Hang A double inequality for an integral mean in terms of the exponential and logarithmic means. (English) Zbl 1413.26061 Period. Math. Hung. 75, No. 2, 180-189 (2017). MSC: 26E60 26D07 30E20 33C10 33C75 PDF BibTeX XML Cite \textit{F. Qi} et al., Period. Math. Hung. 75, No. 2, 180--189 (2017; Zbl 1413.26061) Full Text: DOI OpenURL
You, Xu; Chen, Di-Rong Sharp approximation formulas and inequalities for the Wallis ratio by continued fraction. (English) Zbl 1406.11123 J. Math. Anal. Appl. 455, No. 2, 1743-1748 (2017). MSC: 11Y60 33B15 11A55 PDF BibTeX XML Cite \textit{X. You} and \textit{D.-R. Chen}, J. Math. Anal. Appl. 455, No. 2, 1743--1748 (2017; Zbl 1406.11123) Full Text: DOI OpenURL
Yang, Zhen-Hang; Chu, Yu-Ming On approximating the error function. (English) Zbl 1349.33003 J. Inequal. Appl. 2016, Paper No. 311, 17 p. (2016). MSC: 33B20 26D15 26A48 PDF BibTeX XML Cite \textit{Z.-H. Yang} and \textit{Y.-M. Chu}, J. Inequal. Appl. 2016, Paper No. 311, 17 p. (2016; Zbl 1349.33003) Full Text: DOI OpenURL
Yang, Zhen-Hang; Chu, Yu-Ming; Zhang, Xiao-Hui Sharp Cusa type inequalities with two parameters and their applications. (English) Zbl 1410.26028 Appl. Math. Comput. 268, 1177-1198 (2015). MSC: 26D05 33B10 PDF BibTeX XML Cite \textit{Z.-H. Yang} et al., Appl. Math. Comput. 268, 1177--1198 (2015; Zbl 1410.26028) Full Text: DOI OpenURL
Qi, Feng; Mortici, Cristinel Some best approximation formulas and inequalities for the Wallis ratio. (English) Zbl 1338.33010 Appl. Math. Comput. 253, 363-368 (2015). MSC: 33B15 40A05 41A60 PDF BibTeX XML Cite \textit{F. Qi} and \textit{C. Mortici}, Appl. Math. Comput. 253, 363--368 (2015; Zbl 1338.33010) Full Text: DOI arXiv OpenURL
Yang, Zhen-Hang; Chu, Yu-Ming Jordan type inequalities for hyperbolic functions and their applications. (English) Zbl 1323.26021 J. Funct. Spaces 2015, Article ID 370979, 4 p. (2015). MSC: 26D05 26D07 33B10 PDF BibTeX XML Cite \textit{Z.-H. Yang} and \textit{Y.-M. Chu}, J. Funct. Spaces 2015, Article ID 370979, 4 p. (2015; Zbl 1323.26021) Full Text: DOI OpenURL
Debnath, Lokenath; Mortici, Cristinel; Zhu, Ling Refinements of Jordan-Stečkin and Becker-Stark inequalities. (English) Zbl 1308.26029 Result. Math. 67, No. 1-2, 207-215 (2015). MSC: 26D15 41A10 42A16 PDF BibTeX XML Cite \textit{L. Debnath} et al., Result. Math. 67, No. 1--2, 207--215 (2015; Zbl 1308.26029) Full Text: DOI OpenURL
Yang, Zhen-Hang; Chu, Yu-Ming; Song, Ying-Qing; Li, Yong-Min A sharp double inequality for trigonometric functions and its applications. (English) Zbl 1474.26057 Abstr. Appl. Anal. 2014, Article ID 592085, 9 p. (2014). MSC: 26D05 26D15 PDF BibTeX XML Cite \textit{Z.-H. Yang} et al., Abstr. Appl. Anal. 2014, Article ID 592085, 9 p. (2014; Zbl 1474.26057) Full Text: DOI OpenURL
Zhu, Ling An extended Jordan’s inequality in exponential type. (English) Zbl 1234.26065 Appl. Math. Lett. 24, No. 11, 1870-1873 (2011). MSC: 26D15 26D05 PDF BibTeX XML Cite \textit{L. Zhu}, Appl. Math. Lett. 24, No. 11, 1870--1873 (2011; Zbl 1234.26065) Full Text: DOI OpenURL
Klén, R.; Visuri, M.; Vuorinen, M. On Jordan type inequalities for hyperbolic functions. (English) Zbl 1211.26015 J. Inequal. Appl. 2010, Article ID 362548, 14 p. (2010). Reviewer: József Sándor (Cluj-Napoca) MSC: 26D07 PDF BibTeX XML Cite \textit{R. Klén} et al., J. Inequal. Appl. 2010, Article ID 362548, 14 p. (2010; Zbl 1211.26015) Full Text: DOI arXiv EuDML OpenURL
Zhu, Ling Jordan type inequalities involving the Bessel and modified Bessel functions. (English) Zbl 1189.33010 Comput. Math. Appl. 59, No. 2, 724-736 (2010). MSC: 33C10 PDF BibTeX XML Cite \textit{L. Zhu}, Comput. Math. Appl. 59, No. 2, 724--736 (2010; Zbl 1189.33010) Full Text: DOI OpenURL
Zhu, Ling A general form of Jordan-type double inequality for the generalized and normalized Bessel functions. (English) Zbl 1188.26017 Appl. Math. Comput. 215, No. 11, 3802-3810 (2010). Reviewer: Stamatis Koumandos (Nicosia) MSC: 26D15 26D05 33C10 33C47 PDF BibTeX XML Cite \textit{L. Zhu}, Appl. Math. Comput. 215, No. 11, 3802--3810 (2010; Zbl 1188.26017) Full Text: DOI OpenURL
Zhu, Ling; Sun, Jinju Six new Redheffer-type inequalities for circular and hyperbolic functions. (English) Zbl 1155.26302 Comput. Math. Appl. 56, No. 2, 522-529 (2008). MSC: 26D05 26D07 33B10 PDF BibTeX XML Cite \textit{L. Zhu} and \textit{J. Sun}, Comput. Math. Appl. 56, No. 2, 522--529 (2008; Zbl 1155.26302) Full Text: DOI OpenURL
Niu, Da-Wei; Huo, Zhen-Hong; Cao, Jian; Qi, Feng A general refinement of Jordan’s inequality and a refinement of L. Yang’s inequality. (English) Zbl 1141.26003 Integral Transforms Spec. Funct. 19, No. 3, 157-164 (2008). MSC: 26D05 26D15 PDF BibTeX XML Cite \textit{D.-W. Niu} et al., Integral Transforms Spec. Funct. 19, No. 3, 157--164 (2008; Zbl 1141.26003) Full Text: DOI OpenURL
Chen, Chao-Ping; Qi, Feng The best bounds in Wallis’ inequality. (English) Zbl 1049.05006 Proc. Am. Math. Soc. 133, No. 2, 397-401 (2005). MSC: 05A20 05A10 26D20 33B15 PDF BibTeX XML Cite \textit{C.-P. Chen} and \textit{F. Qi}, Proc. Am. Math. Soc. 133, No. 2, 397--401 (2005; Zbl 1049.05006) Full Text: DOI OpenURL
Qi, Feng; Mei, Jia-Qiang Some inequalities of the incomplete gamma and related functions. (English) Zbl 0934.33001 Z. Anal. Anwend. 18, No. 3, 793-799 (1999). Reviewer: Lixin Liu (Guangzhou) MSC: 33B20 26D07 26D15 PDF BibTeX XML Cite \textit{F. Qi} and \textit{J.-Q. Mei}, Z. Anal. Anwend. 18, No. 3, 793--799 (1999; Zbl 0934.33001) Full Text: DOI EuDML OpenURL