Ma, Ruyun; Zhang, Yali Global structure of positive solutions for second order discrete periodic boundary value problem with indefinite weight. (English) Zbl 07784558 Rocky Mt. J. Math. 53, No. 5, 1525-1536 (2023). MSC: 39A27 39A28 PDFBibTeX XMLCite \textit{R. Ma} and \textit{Y. Zhang}, Rocky Mt. J. Math. 53, No. 5, 1525--1536 (2023; Zbl 07784558) Full Text: DOI Link
Wei, Liping; Ma, Ruyun; Zhao, Zhongzi Positive solution of discrete BVPs involving the mean curvature operator on the set of nonnegative integers. (English) Zbl 1472.39039 Mediterr. J. Math. 18, No. 4, Paper No. 159, 14 p. (2021). MSC: 39A70 39A27 47H10 PDFBibTeX XMLCite \textit{L. Wei} et al., Mediterr. J. Math. 18, No. 4, Paper No. 159, 14 p. (2021; Zbl 1472.39039) Full Text: DOI
Zhao, Zhongzi; Ma, Ruyun Existence of positive solutions for a class of fourth-order ordinary differential equations with nonlinear boundary value. (Chinese. English summary) Zbl 1463.34114 J. Sichuan Univ., Nat. Sci. Ed. 57, No. 2, 236-242 (2020). MSC: 34B18 34B09 34C23 PDFBibTeX XMLCite \textit{Z. Zhao} and \textit{R. Ma}, J. Sichuan Univ., Nat. Sci. Ed. 57, No. 2, 236--242 (2020; Zbl 1463.34114) Full Text: DOI
Ma, Ruyun; Wei, Liping; Chen, Zhichao Evolution of bifurcation curves for one-dimensional Minkowski-curvature problem. (English) Zbl 1441.53010 Appl. Math. Lett. 103, Article ID 106176, 8 p. (2020). MSC: 53A35 53B25 53B30 PDFBibTeX XMLCite \textit{R. Ma} et al., Appl. Math. Lett. 103, Article ID 106176, 8 p. (2020; Zbl 1441.53010) Full Text: DOI
Lu, Yanqiong; Ma, Ruyun Disconjugacy conditions and spectrum structure of clamped beam equations with two parameters. (English) Zbl 1462.34043 Commun. Pure Appl. Anal. 19, No. 6, 3283-3302 (2020). Reviewer: Alberto Cabada (Santiago de Compostela) MSC: 34B08 34B15 34B18 34C23 34L05 74K10 34B27 PDFBibTeX XMLCite \textit{Y. Lu} and \textit{R. Ma}, Commun. Pure Appl. Anal. 19, No. 6, 3283--3302 (2020; Zbl 1462.34043) Full Text: DOI
Lu, Yanqiong; Ma, Ruyun Discrete Arzela-Ascoli theorem on the half line and its application. (English) Zbl 1438.39002 Commun. Math. Res. 34, No. 3, 221-229 (2018). MSC: 39A12 39A27 PDFBibTeX XMLCite \textit{Y. Lu} and \textit{R. Ma}, Commun. Math. Res. 34, No. 3, 221--229 (2018; Zbl 1438.39002) Full Text: DOI
Ma, Ruyun Positive solutions for Dirichlet problems involving the mean curvature operator in Minkowski space. (English) Zbl 1411.34038 Monatsh. Math. 187, No. 2, 315-325 (2018). Reviewer: Rodica Luca (Iaşi) MSC: 34B18 34B27 34B15 34A40 34B09 47N20 PDFBibTeX XMLCite \textit{R. Ma}, Monatsh. Math. 187, No. 2, 315--325 (2018; Zbl 1411.34038) Full Text: DOI
Xu, Man; Ma, Ruyun; He, Zhiqian Positive solutions of the periodic problems for quasilinear difference equation with sign-changing weight. (English) Zbl 1448.39022 Adv. Difference Equ. 2018, Paper No. 393, 13 p. (2018). MSC: 39A27 39A23 39A28 PDFBibTeX XMLCite \textit{M. Xu} et al., Adv. Difference Equ. 2018, Paper No. 393, 13 p. (2018; Zbl 1448.39022) Full Text: DOI
Ma, Ruyun; Xu, Man Positive rotationally symmetric solutions for a Dirichlet problem involving the higher mean curvature operator in Minkowski space. (English) Zbl 1384.53018 J. Math. Anal. Appl. 460, No. 1, 33-46 (2018). Reviewer: Dian K. Palagachev (Bari) MSC: 53B25 53C44 35K55 53B30 PDFBibTeX XMLCite \textit{R. Ma} and \textit{M. Xu}, J. Math. Anal. Appl. 460, No. 1, 33--46 (2018; Zbl 1384.53018) Full Text: DOI
Yan, Dongliang; Ma, Ruyun Existence of positive solutions of a second-order Neumann problem with derivative term. (Chinese. English summary) Zbl 1399.34086 J. Sichuan Univ., Nat. Sci. Ed. 54, No. 6, 1136-1140 (2017). MSC: 34B18 47N20 PDFBibTeX XMLCite \textit{D. Yan} and \textit{R. Ma}, J. Sichuan Univ., Nat. Sci. Ed. 54, No. 6, 1136--1140 (2017; Zbl 1399.34086) Full Text: DOI
Chen, Tianlan; Ma, Ruyun Existence of positive solutions for difference systems coming from a model for burglary. (English) Zbl 1424.39005 Turk. J. Math. 40, No. 5, 1049-1057 (2016). MSC: 39A10 39A60 37C25 47H11 PDFBibTeX XMLCite \textit{T. Chen} and \textit{R. Ma}, Turk. J. Math. 40, No. 5, 1049--1057 (2016; Zbl 1424.39005) Full Text: DOI
Chen, Tianlan; Ma, Ruyun Positive solutions for a class of semipositone Neumann problems. (English) Zbl 1372.34052 Bound. Value Probl. 2016, Paper No. 19, 12 p. (2016). MSC: 34B18 34B09 PDFBibTeX XMLCite \textit{T. Chen} and \textit{R. Ma}, Bound. Value Probl. 2016, Paper No. 19, 12 p. (2016; Zbl 1372.34052) Full Text: DOI
Ma, Ruyun; Lu, Yanqiong Multiplicity of positive solutions for second order nonlinear Dirichlet problem with one-dimension Minkowski-curvature operator. (English) Zbl 1344.34041 Adv. Nonlinear Stud. 15, No. 4, 789-803 (2015). Reviewer: Satoshi Tanaka (Okayama) MSC: 34B18 34B16 PDFBibTeX XMLCite \textit{R. Ma} and \textit{Y. Lu}, Adv. Nonlinear Stud. 15, No. 4, 789--803 (2015; Zbl 1344.34041) Full Text: DOI
Ma, Ruyun; Dai, Guowei; Gao, Chenghua Existence and multiplicity of positive solutions for a class of \(p(x)\)-Kirchhoff type equations. (English) Zbl 1278.35117 Bound. Value Probl. 2012, Paper No. 16, 16 p. (2012). MSC: 35J92 35J60 35J25 35R09 35B09 PDFBibTeX XMLCite \textit{R. Ma} et al., Bound. Value Probl. 2012, Paper No. 16, 16 p. (2012; Zbl 1278.35117) Full Text: DOI
Ma, Ruyun; Chen, Ruipeng Existence of one-signed solutions of nonlinear four-point boundary value problems. (English) Zbl 1265.34053 Czech. Math. J. 62, No. 3, 593-612 (2012). Reviewer: Milan Tvrdý (Praha) MSC: 34B10 34B15 34B18 34C23 PDFBibTeX XMLCite \textit{R. Ma} and \textit{R. Chen}, Czech. Math. J. 62, No. 3, 593--612 (2012; Zbl 1265.34053) Full Text: DOI Link
Yang, Bianxia; Ma, Ruyun; Gao, Chenghua Positive periodic solutions of delayed differential equations. (English) Zbl 1248.34104 Appl. Math. Comput. 218, No. 8, 4538-4545 (2011). MSC: 34K13 47N20 PDFBibTeX XMLCite \textit{B. Yang} et al., Appl. Math. Comput. 218, No. 8, 4538--4545 (2011; Zbl 1248.34104) Full Text: DOI
Ma, Ruyun; Gao, Chenghua; Han, Xiaoling On linear and nonlinear fourth-order eigenvalue problems with indefinite weight. (English) Zbl 1233.34005 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 18, 6965-6969 (2011). Reviewer: Andreas Fleige (Dortmund) MSC: 34B09 34B15 34B18 34C23 PDFBibTeX XMLCite \textit{R. Ma} et al., Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 18, 6965--6969 (2011; Zbl 1233.34005) Full Text: DOI
Ma, Ruyun; An, Yulian Global structure of positive solutions for superlinear \(2m\)th-boundary value problems. (English) Zbl 1224.34034 Czech. Math. J. 60, No. 1, 161-172 (2010). MSC: 34B09 34B10 34B18 PDFBibTeX XMLCite \textit{R. Ma} and \textit{Y. An}, Czech. Math. J. 60, No. 1, 161--172 (2010; Zbl 1224.34034) Full Text: DOI EuDML
Ma, Ruyun; Xu, Youji Existence of positive solution for nonlinear fourth-order difference equations. (English) Zbl 1220.39008 Comput. Math. Appl. 59, No. 12, 3770-3777 (2010). Reviewer: Andrzej Smajdor (Kraków) MSC: 39A12 39A22 39A10 34B15 PDFBibTeX XMLCite \textit{R. Ma} and \textit{Y. Xu}, Comput. Math. Appl. 59, No. 12, 3770--3777 (2010; Zbl 1220.39008) Full Text: DOI
Ma, Ruyun; Xu, Jia Bifurcation from interval and positive solutions of a nonlinear fourth-order boundary value problem. (English) Zbl 1200.34023 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 72, No. 1, 113-122 (2010). Reviewer: Anna Capietto (Torino) MSC: 34B18 34C23 PDFBibTeX XMLCite \textit{R. Ma} and \textit{J. Xu}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 72, No. 1, 113--122 (2010; Zbl 1200.34023) Full Text: DOI
Ma, Ruyun; Fan, Hongxia; Han, Xiaoling Positive solutions of nonlinear \(\infty\)-point boundary value problems. (Chinese. English summary) Zbl 1212.34029 Acta Math. Sci., Ser. A, Chin. Ed. 29, No. 3, 699-706 (2009). MSC: 34B10 34B15 34B18 PDFBibTeX XMLCite \textit{R. Ma} et al., Acta Math. Sci., Ser. A, Chin. Ed. 29, No. 3, 699--706 (2009; Zbl 1212.34029)
Anderson, Douglas R.; Ma, Ruyun Second-order \(n\)-point eigenvalue problems on time scales. (English) Zbl 1133.39013 Adv. Difference Equ. 2006, Article ID 59572, 17 p. (2006). MSC: 39A12 39A11 34L05 34L30 PDFBibTeX XMLCite \textit{D. R. Anderson} and \textit{R. Ma}, Adv. Difference Equ. 2006, Article ID 59572, 17 p. (2006; Zbl 1133.39013) Full Text: DOI EuDML
Bai, Dingyong; Ma, Ruyun A singular second-order differential systems of boundary value problem. (Chinese. English summary) Zbl 1068.34022 Acta Sci. Nat. Univ. Sunyatseni 43, No. 2, 129-132 (2004). MSC: 34B18 34B16 34B15 PDFBibTeX XMLCite \textit{D. Bai} and \textit{R. Ma}, Acta Sci. Nat. Univ. Sunyatseni 43, No. 2, 129--132 (2004; Zbl 1068.34022)
Ma, Ruyun Positive solutions for nonhomogeneous \(m\)-point boundary value problems. (English) Zbl 1062.34022 Comput. Math. Appl. 47, No. 4-5, 689-698 (2004). MSC: 34B18 34B10 PDFBibTeX XMLCite \textit{R. Ma}, Comput. Math. Appl. 47, No. 4--5, 689--698 (2004; Zbl 1062.34022) Full Text: DOI
Ma, Ruyun; Song, Lingyu Positive solutions of an equation associated with an elastic beam with simply supported end-points. (Chinese. English summary) Zbl 1051.34017 J. Math. Res. Expo. 24, No. 2, 317-320 (2004). MSC: 34B18 34B15 PDFBibTeX XMLCite \textit{R. Ma} and \textit{L. Song}, J. Math. Res. Expo. 24, No. 2, 317--320 (2004; Zbl 1051.34017)
Ma, Ruyun; Raffoul, Youssef N. Positive solutions of three-point nonlinear discrete second order boundary value problem. (English) Zbl 1056.39024 J. Difference Equ. Appl. 10, No. 2, 129-138 (2004). Reviewer: Patricia J. Y. Wong (Singapore) MSC: 39A12 39A11 34B15 PDFBibTeX XMLCite \textit{R. Ma} and \textit{Y. N. Raffoul}, J. Difference Equ. Appl. 10, No. 2, 129--138 (2004; Zbl 1056.39024) Full Text: DOI
Yao, Qinliu; Ma, Ruyun An existence theorem on a positive solution for a nonlinear eigenvalue problem. (Chinese. English summary) Zbl 1063.34019 J. Math., Wuhan Univ. 23, No. 1, 91-94 (2003). MSC: 34B18 34B15 34L15 PDFBibTeX XMLCite \textit{Q. Yao} and \textit{R. Ma}, J. Math., Wuhan Univ. 23, No. 1, 91--94 (2003; Zbl 1063.34019)
Ma, Ruyun Existence of positive solutions for superlinear semipositone \(m\)-point boundary-value problems. (English) Zbl 1069.34036 Proc. Edinb. Math. Soc., II. Ser. 46, No. 2, 279-292 (2003). Reviewer: Yongxiang Li (Lanzhou) MSC: 34B18 34B10 34B15 PDFBibTeX XMLCite \textit{R. Ma}, Proc. Edinb. Math. Soc., II. Ser. 46, No. 2, 279--292 (2003; Zbl 1069.34036) Full Text: DOI Link
Ma, Ruyun Existence of positive solutions for a nonlinear fourth order boundary value problem. (English) Zbl 1028.34025 Ann. Pol. Math. 81, No. 1, 79-84 (2003). MSC: 34B18 34B10 PDFBibTeX XMLCite \textit{R. Ma}, Ann. Pol. Math. 81, No. 1, 79--84 (2003; Zbl 1028.34025) Full Text: DOI
Ma, Ruyun; Wang, Haiyan Positive solutions of nonlinear three-point boundary-value problems. (English) Zbl 1028.34014 J. Math. Anal. Appl. 279, No. 1, 216-227 (2003). Reviewer: S.K.Ntouyas (Ioannina) MSC: 34B10 34B18 34B15 PDFBibTeX XMLCite \textit{R. Ma} and \textit{H. Wang}, J. Math. Anal. Appl. 279, No. 1, 216--227 (2003; Zbl 1028.34014) Full Text: DOI
Ma, Ruyun; Yao, Qingliu; Li, Baolin Positive solutions of a semilinear elliptic equation with coefficient that changes sign. (English) Zbl 1030.35063 Chin. Q. J. Math. 17, No. 4, 10-14 (2002). Reviewer: Yuxia Guo (Beijing) MSC: 35J60 PDFBibTeX XMLCite \textit{R. Ma} et al., Chin. Q. J. Math. 17, No. 4, 10--14 (2002; Zbl 1030.35063)
Ma, Ruyun Existence of positive solutions for second order \(m\)-point boundary value problems. (English) Zbl 1055.34025 Ann. Pol. Math. 79, No. 3, 265-276 (2002). MSC: 34B10 34B18 PDFBibTeX XMLCite \textit{R. Ma}, Ann. Pol. Math. 79, No. 3, 265--276 (2002; Zbl 1055.34025) Full Text: DOI
Ma, Yuhong; Ma, Ruyun On concave positive solution to a second-order three-point boundary value problem. (Chinese. English summary) Zbl 1018.34010 J. Northwest Norm. Univ., Nat. Sci. 38, No. 2, 8-13 (2002). MSC: 34B10 34B18 PDFBibTeX XMLCite \textit{Y. Ma} and \textit{R. Ma}, J. Northwest Norm. Univ., Nat. Sci. 38, No. 2, 8--13 (2002; Zbl 1018.34010)
Ma, Ruyun Positive solutions for second-order functional-differential equations. (English) Zbl 0996.34014 Dyn. Syst. Appl. 10, No. 2, 215-223 (2001). Reviewer: Rudolf Kodnár (Bratislava) MSC: 34B15 PDFBibTeX XMLCite \textit{R. Ma}, Dyn. Syst. Appl. 10, No. 2, 215--223 (2001; Zbl 0996.34014)
Ma, Ruyun; Wang, Rufa; Ren, Lishun Existence results for semipositone boundary value problems. (English) Zbl 1021.34017 Acta Math. Sci., Ser. B, Engl. Ed. 21, No. 2, 189-195 (2001). Reviewer: Idris Addou (Montréal) MSC: 34B18 34B16 34B15 PDFBibTeX XMLCite \textit{R. Ma} et al., Acta Math. Sci., Ser. B, Engl. Ed. 21, No. 2, 189--195 (2001; Zbl 1021.34017) Full Text: DOI
Ma, Ruyun Positive solutions for second-order three-point boundary value problems. (English) Zbl 0989.34009 Appl. Math. Lett. 14, No. 1, 1-5 (2001). Reviewer: Idris Addou (Montréal) MSC: 34B18 PDFBibTeX XMLCite \textit{R. Ma}, Appl. Math. Lett. 14, No. 1, 1--5 (2001; Zbl 0989.34009) Full Text: DOI
Ma, Ruyun Multiplicity of positive solutions for second-order three-point boundary value problems. (English) Zbl 0958.34019 Comput. Math. Appl. 40, No. 2-3, 193-204 (2000). Reviewer: Nataliya Bantsur (Kyïv) MSC: 34B18 34B08 34B10 34B27 PDFBibTeX XMLCite \textit{R. Ma}, Comput. Math. Appl. 40, No. 2--3, 193--204 (2000; Zbl 0958.34019) Full Text: DOI
Cao, Daomin; Ma, Ruyun Positive solutions to a second-order multi-point boundary-value problem. (English) Zbl 0964.34022 Electron. J. Differ. Equ. 2000, Paper No. 65, 8 p. (2000). Reviewer: N.Parhi (Berhampur) MSC: 34B18 34B10 PDFBibTeX XMLCite \textit{D. Cao} and \textit{R. Ma}, Electron. J. Differ. Equ. 2000, Paper No. 65, 8 p. (2000; Zbl 0964.34022) Full Text: EuDML EMIS