Edit Profile (opens in new tab) Kong, Qingkai Co-Author Distance Author ID: kong.qingkai Published as: Kong, Qingkai; Kong, Q.; Kong, Qing Kai more...less Homepage: http://www.math.niu.edu/faculty/index.php?cmd=detail&id=32 External Links: MGP · Google Scholar Documents Indexed: 156 Publications since 1983, including 3 Books Reviewing Activity: 148 Reviews Biographic References: 1 Publication Co-Authors: 47 Co-Authors with 130 Joint Publications 1,551 Co-Co-Authors all top 5 Co-Authors 21 single-authored 42 Kong, Lingju 25 Zettl, Anton 18 Graef, John R. 17 Wang, Min 17 Wu, Hongyou 12 Erbe, Lynn Harry 8 Dhar, Sougata 7 Hassan, Taher S. 6 Zhang, Binggen 4 St. George, Thomas E. 4 Wong, James S. W. 3 Wang, Jing 3 Wang, Qiru 3 Yang, Bo 2 Cao, Xifang 2 Chamberlain, Jeremy 2 Del Medico, Amy 2 Freedman, Herbert Irving 2 Pašić, Mervan 2 Wang, Xiaofei 1 Bailey, Paul B. 1 Bainov, Drumi Dimitrov 1 Bayen, Alexandre M. 1 Bellout, Hamid 1 Billingham, John 1 Binggen, Zhang 1 Chen, Xiangyong 1 Chen, Zongjie 1 Eastham, Michael S. P. 1 Everitt, William Norrie 1 Fang, Ting 1 Haertzen, Kevin 1 Harris, Bernard J. 1 Kelly, Jessica Stewart 1 King, Andrew C. 1 Kwong, Man Kam 1 Li, Fei 1 Li, Ziwei 1 Liao, Xiao Xin 1 Lin, Qun 1 Liu, Yuan 1 Liu, Yufan 1 McCabe, Michael 1 Minchev, Emil 1 Möller, Manfred 1 Piao, Daxiong 1 Ruan, Shigui 1 Shi, Yuming 1 Siauw, Timmy 1 Sun, Huaqing 1 Sun, Yijun 1 Sun, Yuangong 1 Tang, Shengdao 1 Volkmer, Hans W. 1 Wang, Jian 1 Wang, Xuelian 1 Yang, Chengyu 1 Zafer, Ağacık 1 Zhang, Shaoyan 1 Zhang, Yigang 1 Zheng, Zhaowen 1 Zhu, Zhiqiang all top 5 Serials 9 Journal of Mathematical Analysis and Applications 8 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 7 Electronic Journal of Qualitative Theory of Differential Equations 6 Applied Mathematics and Computation 6 Mathematische Nachrichten 6 Dynamic Systems and Applications 5 Computers & Mathematics with Applications 5 Journal of Differential Equations 5 Results in Mathematics 4 Proceedings of the Royal Society of Edinburgh. Section A. Mathematics 4 Electronic Journal of Differential Equations (EJDE) 4 Communications in Applied Analysis 3 Applicable Analysis 3 Rocky Mountain Journal of Mathematics 3 Journal of Computational and Applied Mathematics 3 Proceedings of the American Mathematical Society 3 Journal of Difference Equations and Applications 3 Differential Equations and Applications 2 Canadian Journal of Mathematics 2 Transactions of the American Mathematical Society 2 Chinese Annals of Mathematics. Series B 2 Journal of Shandong College of Oceanology 2 Applied Mathematics Letters 2 Journal of Ocean University of Qingdao 2 Discrete and Continuous Dynamical Systems 2 Dynamics of Continuous, Discrete & Impulsive Systems. Series A. Mathematical Analysis 2 Journal of Applied Analysis and Computation 2 Nonlinear Analysis. Theory, Methods & Applications 1 Indian Journal of Pure & Applied Mathematics 1 Mathematical Methods in the Applied Sciences 1 Mathematical Proceedings of the Cambridge Philosophical Society 1 Annali di Matematica Pura ed Applicata. Serie Quarta 1 Canadian Mathematical Bulletin 1 Funkcialaj Ekvacioj. Serio Internacia 1 Hiroshima Mathematical Journal 1 Journal of the Korean Mathematical Society 1 Mathematika 1 Proceedings of the Edinburgh Mathematical Society. Series II 1 Utilitas Mathematica 1 Annals of Differential Equations 1 Differential and Integral Equations 1 Mathematica Bohemica 1 Panamerican Mathematical Journal 1 Linear Algebra and its Applications 1 SIAM Journal on Mathematical Analysis 1 The Canadian Applied Mathematics Quarterly 1 Far East Journal of Mathematical Sciences 1 Opuscula Mathematica 1 Nonlinear Studies 1 Communications on Applied Nonlinear Analysis 1 Functional Differential Equations 1 Differential Equations and Dynamical Systems 1 Journal of Inequalities and Applications 1 Mathematical Inequalities & Applications 1 Fractional Calculus & Applied Analysis 1 Proceedings of the Royal Society of London. Series A. Mathematical, Physical and Engineering Sciences 1 Discrete Dynamics in Nature and Society 1 Mathematical Modelling and Analysis 1 Acta Mathematica Scientia. Series B. (English Edition) 1 Nonlinear Dynamics and Systems Theory 1 Cubo Matemática Educacional 1 Mediterranean Journal of Mathematics 1 Pure and Applied Mathematics, Marcel Dekker 1 Journal of Fractional Calculus and Applications 1 Fractional Differential Calculus 1 Universitext all top 5 Fields 138 Ordinary differential equations (34-XX) 20 Operator theory (47-XX) 19 Difference and functional equations (39-XX) 7 Real functions (26-XX) 6 Biology and other natural sciences (92-XX) 5 Systems theory; control (93-XX) 4 Integral equations (45-XX) 3 Global analysis, analysis on manifolds (58-XX) 2 Linear and multilinear algebra; matrix theory (15-XX) 2 Partial differential equations (35-XX) 2 Dynamical systems and ergodic theory (37-XX) 2 Functional analysis (46-XX) 2 Numerical analysis (65-XX) 1 Functions of a complex variable (30-XX) 1 Probability theory and stochastic processes (60-XX) 1 Computer science (68-XX) 1 Mechanics of deformable solids (74-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 130 Publications have been cited 1,597 times in 1,005 Documents Cited by ▼ Year ▼ Oscillation theory for functional differential equations. Zbl 0821.34067 Erbe, L. H.; Kong, Qingkai; Zhang, B. G. 162 1994 Interval criteria for oscillation of second-order linear ordinary differential equations. Zbl 0924.34026 Kong, Qingkai 88 1999 Eigenvalues of regular Sturm-Liouville problems. Zbl 0862.34020 Kong, Q.; Zettl, A. 84 1996 Dependence of the \(n\)th Sturm-Liouville eigenvalue on the problem. Zbl 0932.34081 Kong, Qingkai; Wu, Hongyou; Zettl, Anton 76 1999 Kamenev type theorems for second order matrix differential systems. Zbl 0777.34024 Erbe, Lynn H.; Kong, Qingkai; Ruan, Shigui 57 1993 Uniqueness of positive solutions of fractional boundary value problems with non-homogeneous integral boundary conditions. Zbl 1279.34007 Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min 44 2012 Dependence of eigenvalues of Sturm-Liouville problems on the boundary. Zbl 0856.34027 Kong, Q.; Zettl, A. 41 1996 Sturm-Liouville problems with finite spectrum. Zbl 1001.34019 Kong, Q.; Wu, H.; Zettl, A. 37 2001 Left-definite Sturm-Liouville problems. Zbl 1002.34016 Kong, Q.; Wu, H.; Zettl, A. 35 2001 Boundary value problems for singular second-order functional differential equations. Zbl 0816.34046 Erbe, L. H.; Kong, Qingkai 34 1994 Extended dissipative sliding mode control for nonlinear networked control systems via event-triggered mechanism with random uncertain measurement. Zbl 1508.93306 Liu, Yu-An; Tang, Shengdao; Liu, Yufan; Kong, Qingkai; Wang, Jing 34 2021 Matrix representations of Sturm-Liouville problems with finite spectrum. Zbl 1185.34032 Kong, Qingkai; Volkmer, Hans; Zettl, Anton 32 2009 Dependence of eigenvalues on the problem. Zbl 0888.34017 Kong, Q.; Wu, H.; Zettl, A. 31 1997 Geometric aspects of Sturm-Liouville problems. I: Structures on spaces of boundary conditions. Zbl 0957.34024 Kong, Q.; Wu, H.; Zettl, A. 29 2000 Inequalities among eigenvalues of Sturm-Liouville problems. Zbl 0927.34017 Eastham, M. S. P.; Kong, Q.; Wu, H.; Zettl, A. 28 1999 Multi-point boundary value problems of second-order differential equations. I. Zbl 1066.34012 Kong, Lingju; Kong, Qingkai 27 2004 Indefinite Sturm-Liouville problems. Zbl 1056.34038 Kong, Q.; Wu, H.; Zettl, A.; Möller, M. 24 2003 Kamenev-type and interval oscillation criteria for second-order linear differential equations on a measure chain. Zbl 1056.34050 Del Medico, Amy; Kong, Qingkai 24 2004 Sturm-Liouville problems on time scales with separated boundary conditions. Zbl 1153.39022 Kong, Qingkai 22 2008 Existence and nonexistence of solutions of second-order nonlinear boundary value problems. Zbl 1119.34024 Kong, Qingkai 20 2007 Second-order boundary value problems with nonhomogeneous boundary conditions. I. Zbl 1060.34005 Kong, Lingju; Kong, Qingkai 19 2005 Singular left-definite Sturm–Liouville problems. Zbl 1058.34029 Kong, Q.; Wu, H.; Zettl, A. 18 2004 Liapunov-type inequalities for third-order half-linear equations and applications to boundary value problems. Zbl 1309.34026 Dhar, Sougata; Kong, Qingkai 18 2014 Linear ordinary differential equations. Zbl 0886.34007 Kong, Q.; Zettl, Anton 18 1994 Fractional boundary value problems with integral boundary conditions. Zbl 1385.34010 Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min 18 2013 Friedrichs extensions for singular Hamiltonian operators with intermediate deficiency indices. Zbl 1385.45005 Zheng, Zhaowen; Kong, Qingkai 17 2018 Second-order boundary value problems with nonhomogeneous boundary conditions. II. Zbl 1119.34009 Kong, Lingju; Kong, Qingkai 17 2007 Positive solutions of boundary value problems for third-order functional difference equations. Zbl 1057.39014 Kong, Lingju; Kong, Qingkai; Zhang, Binggen 16 2002 On the oscillation of differential equations with an oscillatory coefficient. Zbl 0829.34025 Harris, B. J.; Kong, Q. 16 1995 Fractional boundary value problems and Lyapunov-type inequalities with fractional integral boundary conditions. Zbl 1363.34005 Dhar, Sougata; Kong, Qingkai; McCabe, Michael 15 2016 Higher order boundary value problems with nonhomogeneous boundary conditions. Zbl 1191.34032 Kong, Lingju; Kong, Qingkai 15 2010 New Kamenev-type oscillation criteria for second-order differential equations on a measure chain. Zbl 1085.39014 Del Medico, A.; Kong, Qingkai 15 2005 Symmetric positive solutions of nonlinear boundary value problems. Zbl 1117.34024 Graef, John R.; Kong, Lingju; Kong, Qingkai 14 2007 Positive solutions of higher-order boundary-value problems. Zbl 1084.34023 Kong, Lingju; Kong, Qingkai 13 2005 Inverse Sturm-Liouville problems with finite spectrum. Zbl 1232.34023 Kong, Qingkai; Zettl, Anton 13 2012 Regular approximations of singular Sturm-Liouville problems with limit-circle endpoints. Zbl 1088.34018 Kong, L.; Kong, Q.; Wu, H.; Zettl, A. 12 2004 Existence and uniqueness of solutions for a fractional boundary value problem with Dirichlet boundary condition. Zbl 1340.34015 Graef, John; Kong, Lingju; Kong, Qingkai; Wang, Min 12 2013 Positive solutions to a fourth order boundary value problem. Zbl 1218.34024 Graef, John R.; Kong, Lingju; Kong, Qingkai; Yang, Bo 12 2011 Lyapunov-type inequalities for higher order half-linear differential equations. Zbl 1410.34102 Dhar, Sougata; Kong, Qingkai 12 2016 Interval criteria for forced oscillation with nonlinearities given by Riemann-Stieltjes integrals. Zbl 1228.34055 Sun, Yuangong; Kong, Qingkai 11 2011 Positive solutions of even order system periodic boundary value problems. Zbl 1195.34036 Kong, Qingkai; Wang, Min 11 2010 Limits of Sturm-Liouville eigenvalues when the interval shrinks to an end point. Zbl 1160.34022 Kong, Qingkai; Wu, Hongyou; Zettl, Anton 11 2008 Lyapunov-type inequalities for third-order linear differential equations. Zbl 1345.34029 Dhar, Sougata; Kong, Qingkai 11 2016 Positive solutions of nonlinear fractional boundary value problems with Dirichlet boundary conditions. Zbl 1340.34020 Kong, Qingkai; Wang, Min 11 2012 Nodal solutions of multi-point boundary value problems. Zbl 1195.34028 Kong, Lingju; Kong, Qingkai; Wong, James S. W. 11 2010 A short course in ordinary differential equations. Zbl 1326.34007 Kong, Qingkai 9 2014 Higher order multi-point boundary value problems. Zbl 1222.34019 Graef, John R.; Kong, Lingju; Kong, Qingkai 9 2011 Sturm-Liouville problems whose leading coefficient function changes sign. Zbl 1055.34051 Cao, Xifang; Kong, Qingkai; Wu, Hongyou; Zettl, Anton 9 2003 The study of Jacobi and cyclic Jacobi matrix eigenvalue problems using Sturm-Liouville theory. Zbl 1210.15011 Kong, Qingkai; Zettl, Anton 9 2011 Geometric aspects of Sturm-Liouville problems. III. Level surfaces of the \(n\)th eigenvalue. Zbl 1133.34019 Cao, Xifang; Kong, Qingkai; Wu, Hongyou; Zettl, Anton 9 2007 On a fractional boundary value problem with a perturbation term. Zbl 1474.34169 Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min 9 2017 Observer-based \(\mathcal{H}_\infty\) control for persistent dwell-time switched networked nonlinear systems under packet dropout. Zbl 1510.93341 Chen, Zongjie; Zhang, Yigang; Kong, Qingkai; Fang, Ting; Wang, Jing 9 2022 Application of the mixed monotone operator method to fractional boundary value problems. Zbl 1412.34086 Graef, John R.; Kong, Lingju; Kong, Qingkai 9 2012 Geometric aspects of Sturm-Liouville problems. II: Space of boundary conditions for left-definiteness. Zbl 1056.34037 Haertzen, Kevin; Kong, Qingkai; Wu, Hongyou; Zettl, Anton 8 2004 Multiple solutions of systems of fractional boundary value problems. Zbl 1323.34007 Graef, John R.; Kong, Lingju; Kong, Qingkai 8 2015 Essential spectrum of singular discrete linear Hamiltonian systems. Zbl 1353.39008 Sun, Huaqing; Kong, Qingkai; Shi, Yuming 8 2016 Lyapunov-type inequalities for odd order linear differential equations. Zbl 1358.34032 Dhar, Sougata; Kong, Qingkai 8 2016 Nodal solutions of boundary value problems with boundary conditions involving Riemann-Stieltjes integrals. Zbl 1220.34027 Chamberlain, Jeremy; Kong, Lingju; Kong, Qingkai 8 2011 Nodal solutions of second order nonlinear boundary value problems. Zbl 1189.34043 Kong, Lingju; Kong, Qingkai 8 2009 Inequalities among eigenvalues of singular Sturm-Liouville problems. Zbl 0942.34020 Kong, Q.; Wu, H.; Zettl, A. 7 1999 Positive solutions of nonlinear \(m\)-point boundary value problems on a measure chain. Zbl 1037.34015 Kong, Lingju; Kong, Qingkai 7 2003 Nonoscillation of a class of neutral differential equations. Zbl 1045.34042 Kong, Qingkai; Sun, Yijun; Zhang, Binggen 7 2002 Second-order differential equations: some significant results due to James S.W. Wong. Zbl 1294.34038 Kong, Qingkai; Pašić, Mervan 7 2014 Oscillation and nonoscillation properties of neutral differential equations. Zbl 0797.34072 Erbe, L. H.; Kong, Qingkai 7 1994 Linear Sturm-Liouville problems with multi-point boundary conditions. Zbl 1286.34048 Kong, Lingju; Kong, Qingkai; Kwong, Man K.; Wong, James S. W. 7 2013 Oscillation of partial differential equations with deviating arguments. Zbl 0799.35214 Erbe, L. H.; Kong, Q.; Zhang, B. G. 6 1993 Multiplicity of Sturm–Liouville eigenvalues. Zbl 1069.34124 Kong, Q.; Wu, H.; Zettl, A. 6 2004 Oscillation for systems of functional differential equations. Zbl 0863.34072 Kong, Qingkai 6 1996 On a generalized discrete beam equation via variational methods. Zbl 1278.39005 Graef, John R.; Kong, Lingju; Kong, Qingkai 6 2012 Lyapunov-type inequalities for \(\alpha\)-th order fractional differential equations with \(2<\alpha\leq 3\) and fractional boundary conditions. Zbl 1370.34012 Dhar, Sougata; Kong, Qingkai 6 2017 Asymptotics and oscillation of \(n\)th-order nonlinear dynamic equations on time scales. Zbl 1410.34273 Zhang, Shao-Yan; Wang, Qi-Ru; Kong, Qingkai 6 2016 Oscillation criteria for second order half-linear differential equations. Zbl 0924.34025 Kong, Qingkai 5 1999 Even order nonlinear eigenvalue problems on a measure chain. Zbl 1024.34021 Kong, Lingju; Kong, Qingkai 5 2003 Interval criteria for forced oscillation of differential equations with \(p\)-Laplacian, damping, and mixed nonlinearities. Zbl 1251.34050 Hassan, Taher S.; Kong, Qingkai 5 2011 Oscillation results for second order neutral differential equations. Zbl 0787.34057 Erbe, L. H.; Kong, Q. 5 1992 Oscillations in delay differential systems. Zbl 0780.34049 Kong, Qingkai; Freedman, H. I. 5 1993 Dissipation, boundedness and persistence of general ecological systems. Zbl 0837.92025 Kong, Qingkai; Liao, Xiaoxin 5 1995 Stieltjes integral inequalities of Gronwall type and applications. Zbl 0736.26007 Erbe, L. H.; Kong, Qing Kai 5 1990 Oscillation criteria for second order nonlinear dynamic equations with \(p\)-Laplacian and damping. Zbl 1299.34295 Hassan, Taher S.; Kong, Qingkai 5 2013 Positive solutions of nonlocal fractional boundary value problems. Zbl 1310.34006 Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min 5 2013 Asynchronous fault-tolerant control for stochastic jumping singularly perturbed systems: an \(H_\infty\) sliding mode control scheme. Zbl 1508.93290 Yang, Chengyu; Li, Fei; Kong, Qingkai; Chen, Xiangyong; Wang, Jian 5 2021 Using time scales to study multi-interval Sturm-Liouville problems with interface conditions. Zbl 1263.34032 Kong, Qingkai; Wang, Qi-Ru 5 2013 Interval criteria for forced oscillation of differential equations with \(p\)-Laplacian and nonlinearities given by Riemann-Stieltjes integrals. Zbl 1258.34065 Hassan, Taher S.; Kong, Qingkai 5 2012 Interval oscillation conditions for difference equations. Zbl 0828.39002 Kong, Q.; Zettl, A. 4 1995 Oscillatory and asymptotic behavior of a discrete logistic model. Zbl 0836.39004 Kong, Q. 4 1995 Oscillation of second order matrix differential systems. Zbl 0993.34034 Kong, Qingkai 4 2000 Positive solutions of even order periodic boundary value problems. Zbl 1238.34045 Kong, Qingkai; Wang, Min 4 2011 Explicit conditions for oscillation of neutral differential systems. Zbl 0811.34053 Erbe, L.; Kong, Qingkai 4 1994 Asymptotic and oscillatory behavior of \(n\)th-order half-linear dynamic equations. Zbl 1310.34123 Hassan, Taher S.; Kong, Qingkai 4 2014 Multi-point boundary value problems of second-order differential equations. II. Zbl 1140.34008 Kong, Lingju; Kong, Qingkai 4 2007 A telescoping principle for oscillation of second order differential equations on a time scale. Zbl 1156.34021 Erbe, Lynn; Kong, Lingju; Kong, Qingkai 4 2006 Oscillation criteria for higher-order nonlinear dynamic equations with Laplacians and a deviating argument on time scales. Zbl 1370.34148 Hassan, Taher S.; Kong, Qingkai 4 2017 Existence of nodal solutions of multi-point boundary value problems. Zbl 1236.34027 Kong, Lingju; Kong, Qingkai 4 2009 On some eigenvalue problems in fuel-cell dynamics. Zbl 1056.34091 Bailey, P. B.; Billingham, J.; Cooper, R. J.; Everitt, W. N.; King, A. C.; Kong, Q.; Wu, H.; Zettl, A. 3 2003 Right-definite half-linear Sturm-Liouville problems. Zbl 1131.34020 Kong, Lingju; Kong, Qingkai 3 2007 Eigenvalue approach to even order system periodic boundary value problems. Zbl 1267.34048 Kong, Qingkai; Wang, Min 3 2013 Nonoscillation and oscillation of second order half-linear differential equations. Zbl 1123.34027 Kong, Qingkai 3 2007 Oscillation of a forced second order differential equation with a deviating argument. Zbl 1234.34043 Kong, Qingkai; Wong, James S. W. 3 2010 Nodal solutions of nonlocal boundary value problems. Zbl 1193.34032 Chamberlain, J.; Kong, Lingju; Kong, Qingkai 3 2009 A new proof of the inequalities among Sturm-Liouville eigenvalues. Zbl 0974.34024 Kong, Qingkai; Lin, Qun; Wu, Hongyou; Zettl, Anton 2 2000 Observer-based \(\mathcal{H}_\infty\) control for persistent dwell-time switched networked nonlinear systems under packet dropout. Zbl 1510.93341 Chen, Zongjie; Zhang, Yigang; Kong, Qingkai; Fang, Ting; Wang, Jing 9 2022 Extended dissipative sliding mode control for nonlinear networked control systems via event-triggered mechanism with random uncertain measurement. Zbl 1508.93306 Liu, Yu-An; Tang, Shengdao; Liu, Yufan; Kong, Qingkai; Wang, Jing 34 2021 Asynchronous fault-tolerant control for stochastic jumping singularly perturbed systems: an \(H_\infty\) sliding mode control scheme. Zbl 1508.93290 Yang, Chengyu; Li, Fei; Kong, Qingkai; Chen, Xiangyong; Wang, Jian 5 2021 Lyapunov-type inequalities for third-order linear and half-linear difference equations and extensions. Zbl 1466.39001 Dhar, Sougata; Stewart Kelly, Jessica; Kong, Qingkai 2 2021 Fractional Lyapunov-type inequalities with mixed boundary conditions on univariate and multivariate domains. Zbl 1499.34042 Dhar, Sougata; Kong, Qingkai 2 2020 Lower bounds for the eigenvalues of first-order nonlinear Hamiltonian systems on time scales. Zbl 1408.34073 Kong, Qingkai; Zafer, Ağacık 1 2019 Friedrichs extensions for singular Hamiltonian operators with intermediate deficiency indices. Zbl 1385.45005 Zheng, Zhaowen; Kong, Qingkai 17 2018 Linear Sturm-Liouville problems with Riemann-Stieltjes integral boundary conditions. Zbl 1511.34034 Kong, Qingkai; St. George, Thomas E. 1 2018 On a fractional boundary value problem with a perturbation term. Zbl 1474.34169 Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min 9 2017 Lyapunov-type inequalities for \(\alpha\)-th order fractional differential equations with \(2<\alpha\leq 3\) and fractional boundary conditions. Zbl 1370.34012 Dhar, Sougata; Kong, Qingkai 6 2017 Oscillation criteria for higher-order nonlinear dynamic equations with Laplacians and a deviating argument on time scales. Zbl 1370.34148 Hassan, Taher S.; Kong, Qingkai 4 2017 Fractional boundary value problems and Lyapunov-type inequalities with fractional integral boundary conditions. Zbl 1363.34005 Dhar, Sougata; Kong, Qingkai; McCabe, Michael 15 2016 Lyapunov-type inequalities for higher order half-linear differential equations. Zbl 1410.34102 Dhar, Sougata; Kong, Qingkai 12 2016 Lyapunov-type inequalities for third-order linear differential equations. Zbl 1345.34029 Dhar, Sougata; Kong, Qingkai 11 2016 Essential spectrum of singular discrete linear Hamiltonian systems. Zbl 1353.39008 Sun, Huaqing; Kong, Qingkai; Shi, Yuming 8 2016 Lyapunov-type inequalities for odd order linear differential equations. Zbl 1358.34032 Dhar, Sougata; Kong, Qingkai 8 2016 Asymptotics and oscillation of \(n\)th-order nonlinear dynamic equations on time scales. Zbl 1410.34273 Zhang, Shao-Yan; Wang, Qi-Ru; Kong, Qingkai 6 2016 Linear Sturm-Liouville problems with general homogeneous linear multi-point boundary conditions. Zbl 1357.34046 Kong, Qingkai; George, Thomas E. St. 1 2016 Multiple solutions of systems of fractional boundary value problems. Zbl 1323.34007 Graef, John R.; Kong, Lingju; Kong, Qingkai 8 2015 Liapunov-type inequalities for third-order half-linear equations and applications to boundary value problems. Zbl 1309.34026 Dhar, Sougata; Kong, Qingkai 18 2014 A short course in ordinary differential equations. Zbl 1326.34007 Kong, Qingkai 9 2014 Second-order differential equations: some significant results due to James S.W. Wong. Zbl 1294.34038 Kong, Qingkai; Pašić, Mervan 7 2014 Asymptotic and oscillatory behavior of \(n\)th-order half-linear dynamic equations. Zbl 1310.34123 Hassan, Taher S.; Kong, Qingkai 4 2014 Existence of Nodal solutions of boundary value problems with two multi-point boundary conditions. Zbl 1312.34052 Kong, Qingkai; George, Thomas E. St. 2 2014 Asymptotic behavior of third order functional dynamic equations with \(\gamma\)-Laplacian and nonlinearities given by Riemann-Stieltjes integrals. Zbl 1324.34189 Hassan, T.; Kong, Qingkai 1 2014 Existence and uniqueness of solutions for a fractional boundary value problem with a separated boundary condition. Zbl 1310.34008 Kong, Lingju; Kong, Qingkai; Wang, Min 1 2014 Fractional boundary value problems with integral boundary conditions. Zbl 1385.34010 Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min 18 2013 Existence and uniqueness of solutions for a fractional boundary value problem with Dirichlet boundary condition. Zbl 1340.34015 Graef, John; Kong, Lingju; Kong, Qingkai; Wang, Min 12 2013 Linear Sturm-Liouville problems with multi-point boundary conditions. Zbl 1286.34048 Kong, Lingju; Kong, Qingkai; Kwong, Man K.; Wong, James S. W. 7 2013 Oscillation criteria for second order nonlinear dynamic equations with \(p\)-Laplacian and damping. Zbl 1299.34295 Hassan, Taher S.; Kong, Qingkai 5 2013 Positive solutions of nonlocal fractional boundary value problems. Zbl 1310.34006 Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min 5 2013 Using time scales to study multi-interval Sturm-Liouville problems with interface conditions. Zbl 1263.34032 Kong, Qingkai; Wang, Qi-Ru 5 2013 Eigenvalue approach to even order system periodic boundary value problems. Zbl 1267.34048 Kong, Qingkai; Wang, Min 3 2013 Uniqueness and parameter dependence of positive solutions to higher order boundary value problems with fractional Q-derivatives. Zbl 1286.34009 Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min 2 2013 Infinitely many solutions for a discrete fourth order boundary value problem. Zbl 1307.39002 Graef, J. R.; Kong, L.; Kong, Q. 1 2013 Matching method for nodal solutions of multi-point boundary value problems. Zbl 1279.34033 Kong, Qingkai; George, Thomas E. St. 1 2013 Uniqueness of positive solutions of fractional boundary value problems with non-homogeneous integral boundary conditions. Zbl 1279.34007 Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min 44 2012 Inverse Sturm-Liouville problems with finite spectrum. Zbl 1232.34023 Kong, Qingkai; Zettl, Anton 13 2012 Positive solutions of nonlinear fractional boundary value problems with Dirichlet boundary conditions. Zbl 1340.34020 Kong, Qingkai; Wang, Min 11 2012 Application of the mixed monotone operator method to fractional boundary value problems. Zbl 1412.34086 Graef, John R.; Kong, Lingju; Kong, Qingkai 9 2012 On a generalized discrete beam equation via variational methods. Zbl 1278.39005 Graef, John R.; Kong, Lingju; Kong, Qingkai 6 2012 Interval criteria for forced oscillation of differential equations with \(p\)-Laplacian and nonlinearities given by Riemann-Stieltjes integrals. Zbl 1258.34065 Hassan, Taher S.; Kong, Qingkai 5 2012 Oscillation of forced impulsive differential equations with \(p\)-Laplacian and nonlinearities given by Riemann-Stieltjes integrals. Zbl 1340.34128 Hassan, T.; Kong, Qingkai 2 2012 Positive solutions to a fourth order boundary value problem. Zbl 1218.34024 Graef, John R.; Kong, Lingju; Kong, Qingkai; Yang, Bo 12 2011 Interval criteria for forced oscillation with nonlinearities given by Riemann-Stieltjes integrals. Zbl 1228.34055 Sun, Yuangong; Kong, Qingkai 11 2011 Higher order multi-point boundary value problems. Zbl 1222.34019 Graef, John R.; Kong, Lingju; Kong, Qingkai 9 2011 The study of Jacobi and cyclic Jacobi matrix eigenvalue problems using Sturm-Liouville theory. Zbl 1210.15011 Kong, Qingkai; Zettl, Anton 9 2011 Nodal solutions of boundary value problems with boundary conditions involving Riemann-Stieltjes integrals. Zbl 1220.34027 Chamberlain, Jeremy; Kong, Lingju; Kong, Qingkai 8 2011 Interval criteria for forced oscillation of differential equations with \(p\)-Laplacian, damping, and mixed nonlinearities. Zbl 1251.34050 Hassan, Taher S.; Kong, Qingkai 5 2011 Positive solutions of even order periodic boundary value problems. Zbl 1238.34045 Kong, Qingkai; Wang, Min 4 2011 Dependence of the unique solution of a periodic boundary value problem on the parameter. Zbl 1228.34030 Bellout, Hamid; Kong, Qingkai; Wang, Min 2 2011 Higher order boundary value problems with two point separated nonhomogeneous boundary conditions. Zbl 1242.34037 Graef, John R.; Kong, Lingju; Kong, Qingkai; Yang, Bo 1 2011 Nonlinear boundary value problems with \(p\)-Laplacian. Zbl 1242.34032 Kong, Qingkai; Wang, Xiaofei 1 2011 Higher order boundary value problems with nonhomogeneous boundary conditions. Zbl 1191.34032 Kong, Lingju; Kong, Qingkai 15 2010 Positive solutions of even order system periodic boundary value problems. Zbl 1195.34036 Kong, Qingkai; Wang, Min 11 2010 Nodal solutions of multi-point boundary value problems. Zbl 1195.34028 Kong, Lingju; Kong, Qingkai; Wong, James S. W. 11 2010 Oscillation of a forced second order differential equation with a deviating argument. Zbl 1234.34043 Kong, Qingkai; Wong, James S. W. 3 2010 Nonlinear initial value problems with \(p\)-Laplacian. Zbl 1213.34013 Kong, Qingkai; Wang, Xiaofei 2 2010 Positive solutions of boundary value problems with \(p\)-Laplacian. Zbl 1203.34042 Kong, Qingkai; Wang, Min 1 2010 Higher order multi-point boundary value problems with sign-changing nonlinearities and nonhomogeneous boundary conditions. Zbl 1211.34014 Graef, J. R.; Kong, Lingju; Kong, Qingkai; Wong, James S. W. 1 2010 Matrix representations of Sturm-Liouville problems with finite spectrum. Zbl 1185.34032 Kong, Qingkai; Volkmer, Hans; Zettl, Anton 32 2009 Nodal solutions of second order nonlinear boundary value problems. Zbl 1189.34043 Kong, Lingju; Kong, Qingkai 8 2009 Existence of nodal solutions of multi-point boundary value problems. Zbl 1236.34027 Kong, Lingju; Kong, Qingkai 4 2009 Nodal solutions of nonlocal boundary value problems. Zbl 1193.34032 Chamberlain, J.; Kong, Lingju; Kong, Qingkai 3 2009 Existence of three solutions for a higher-order boundary-value problem. Zbl 1173.34014 Graef, John R.; Kong, Lingju; Kong, Qingkai 2 2009 Kamenev-type oscillation criteria for second-order matrix dynamic equations on time scales. Zbl 1184.34092 Kong, Qingkai; Wang, Qi-Ru; Zhu, Zhi-Qiang 1 2009 Uniqueness and parameter dependence of solutions of second-order boundary value problems. Zbl 1181.34021 Kong, Lingju; Kong, Qingkai 1 2009 Sturm-Liouville problems on time scales with separated boundary conditions. Zbl 1153.39022 Kong, Qingkai 22 2008 Limits of Sturm-Liouville eigenvalues when the interval shrinks to an end point. Zbl 1160.34022 Kong, Qingkai; Wu, Hongyou; Zettl, Anton 11 2008 Existence and nonexistence of solutions of second-order nonlinear boundary value problems. Zbl 1119.34024 Kong, Qingkai 20 2007 Second-order boundary value problems with nonhomogeneous boundary conditions. II. Zbl 1119.34009 Kong, Lingju; Kong, Qingkai 17 2007 Symmetric positive solutions of nonlinear boundary value problems. Zbl 1117.34024 Graef, John R.; Kong, Lingju; Kong, Qingkai 14 2007 Geometric aspects of Sturm-Liouville problems. III. Level surfaces of the \(n\)th eigenvalue. Zbl 1133.34019 Cao, Xifang; Kong, Qingkai; Wu, Hongyou; Zettl, Anton 9 2007 Multi-point boundary value problems of second-order differential equations. II. Zbl 1140.34008 Kong, Lingju; Kong, Qingkai 4 2007 Right-definite half-linear Sturm-Liouville problems. Zbl 1131.34020 Kong, Lingju; Kong, Qingkai 3 2007 Nonoscillation and oscillation of second order half-linear differential equations. Zbl 1123.34027 Kong, Qingkai 3 2007 A telescoping principle for oscillation of second order differential equations on a time scale. Zbl 1156.34021 Erbe, Lynn; Kong, Lingju; Kong, Qingkai 4 2006 Second-order boundary value problems with nonhomogeneous boundary conditions. I. Zbl 1060.34005 Kong, Lingju; Kong, Qingkai 19 2005 New Kamenev-type oscillation criteria for second-order differential equations on a measure chain. Zbl 1085.39014 Del Medico, A.; Kong, Qingkai 15 2005 Positive solutions of higher-order boundary-value problems. Zbl 1084.34023 Kong, Lingju; Kong, Qingkai 13 2005 Multi-point boundary value problems of second-order differential equations. I. Zbl 1066.34012 Kong, Lingju; Kong, Qingkai 27 2004 Kamenev-type and interval oscillation criteria for second-order linear differential equations on a measure chain. Zbl 1056.34050 Del Medico, Amy; Kong, Qingkai 24 2004 Singular left-definite Sturm–Liouville problems. Zbl 1058.34029 Kong, Q.; Wu, H.; Zettl, A. 18 2004 Regular approximations of singular Sturm-Liouville problems with limit-circle endpoints. Zbl 1088.34018 Kong, L.; Kong, Q.; Wu, H.; Zettl, A. 12 2004 Geometric aspects of Sturm-Liouville problems. II: Space of boundary conditions for left-definiteness. Zbl 1056.34037 Haertzen, Kevin; Kong, Qingkai; Wu, Hongyou; Zettl, Anton 8 2004 Multiplicity of Sturm–Liouville eigenvalues. Zbl 1069.34124 Kong, Q.; Wu, H.; Zettl, A. 6 2004 A class of nonlinear boundary value problems of second-order ordinary differential equations. Zbl 1084.34513 Kong, Lingju; Kong, Qingkai 1 2004 Indefinite Sturm-Liouville problems. Zbl 1056.34038 Kong, Q.; Wu, H.; Zettl, A.; Möller, M. 24 2003 Sturm-Liouville problems whose leading coefficient function changes sign. Zbl 1055.34051 Cao, Xifang; Kong, Qingkai; Wu, Hongyou; Zettl, Anton 9 2003 Positive solutions of nonlinear \(m\)-point boundary value problems on a measure chain. Zbl 1037.34015 Kong, Lingju; Kong, Qingkai 7 2003 Even order nonlinear eigenvalue problems on a measure chain. Zbl 1024.34021 Kong, Lingju; Kong, Qingkai 5 2003 On some eigenvalue problems in fuel-cell dynamics. Zbl 1056.34091 Bailey, P. B.; Billingham, J.; Cooper, R. J.; Everitt, W. N.; King, A. C.; Kong, Q.; Wu, H.; Zettl, A. 3 2003 Positive solutions of boundary value problems for functional differential equations. Zbl 1036.34076 Kong, Lingju; Kong, Qingkai 1 2003 Positive solutions of boundary value problems for third-order functional difference equations. Zbl 1057.39014 Kong, Lingju; Kong, Qingkai; Zhang, Binggen 16 2002 Nonoscillation of a class of neutral differential equations. Zbl 1045.34042 Kong, Qingkai; Sun, Yijun; Zhang, Binggen 7 2002 Multiplicities of eigenvalues of a vector-valued Sturm-Liouville problem. Zbl 1052.34032 Kong, Qingkai 1 2002 Sturm-Liouville problems with finite spectrum. Zbl 1001.34019 Kong, Q.; Wu, H.; Zettl, A. 37 2001 Left-definite Sturm-Liouville problems. Zbl 1002.34016 Kong, Q.; Wu, H.; Zettl, A. 35 2001 Geometric aspects of Sturm-Liouville problems. I: Structures on spaces of boundary conditions. Zbl 0957.34024 Kong, Q.; Wu, H.; Zettl, A. 29 2000 Oscillation of second order matrix differential systems. Zbl 0993.34034 Kong, Qingkai 4 2000 ...and 30 more Documents all cited Publications top 5 cited Publications all top 5 Cited by 998 Authors 47 Kong, Qingkai 45 Kong, Lingju 31 Ao, Jijun 30 Graef, John R. 28 Meng, Fanwei 25 Zettl, Anton 22 Wang, Qiru 21 Sun, Jiong 20 Luca, Rodica 20 Zheng, Zhaowen 19 Sun, Yuangong 17 Wu, Hongyou 16 Li, Kun 15 Baculíková, Blanka 15 Džurina, Jozef 15 Henderson, Johnny Lee 14 Agarwal, Ravi P. 14 Ge, Weigao 14 Shi, Yuming 13 Chatzarakis, George E. 13 Diblík, Josef 13 Li, Wan-Tong 13 Ntouyas, Sotiris K. 13 Wang, Min 13 Xu, Zhiting 12 Li, Tongxing 12 Zhang, Maozhu 11 Hassan, Taher S. 10 Ahmad, Bashir 10 Dhar, Sougata 10 Ugurlu, Ekin 10 Yang, Qigui 10 Zhu, Hao 9 Grace, Said Rezk 9 Liu, Lishan 9 O’Regan, Donal 9 Zhai, Chengbo 8 Behrndt, Jussi 8 Hao, Xiaoling 8 Trunk, Carsten 8 Wei, Guangsheng 8 Yang, Bo 7 Benchohra, Mouffak 7 Braverman, Elena 7 Kang, Shin Min 7 Kúdelčíková, Mária 7 Liu, Zeqing 7 Qi, Jiangang 7 Stavroulakis, Ioannis P. 7 Sun, Shurong 7 Tang, Xianhua 7 Thandapani, Ethiraju 7 Wang, Wanyi 7 Wang, Zhong 7 Wong, James S. W. 7 Zhang, Binggen 7 Zhou, Xiaoliang 6 Berezansky, Leonid M. 6 Chen, Shaozhu 6 Gholami, Yousef 6 Liu, Haidong 6 Pašić, Mervan 6 Pinelas, Sandra 6 Qiu, Yangcong 6 Shi, Guoliang 6 Sun, Yongping 6 Tudorache, Alexandru 6 Wang, Wusheng 6 Wu, Yonghong 6 Xu, Yuantong 6 Zhang, Meirong 5 Al-saedi, Ahmed Eid Salem 5 Cai, Jinming 5 Chanane, Bilal 5 Cui, Yujun 5 Erbe, Lynn Harry 5 Ferreira, José Manuel 5 Gao, Chenghua 5 Han, Zhenlai 5 Heidarkhani, Shapour 5 Jia, Mei 5 Jiang, Daqing 5 Mathsen, Ronald M. 5 Sun, Jianping 5 Yan, Jun 5 Zhang, Haiyan Henry 5 Zhang, Liang 5 Zhou, Yong 5 Zhuang, Rong-Kun 4 Abbas, Syed 4 Aktaş, Mustafa Fahri 4 Aydemir, Kadriye 4 Bachar, Imed 4 Bai, Dingyong 4 Çakmak, Devrim 4 Dogan, Abdulkadir 4 Domoshnitsky, Alexander I. 4 Feng, Meiqiang 4 Grigoryan, Gevorg Avagovich 4 Ji, Dehong ...and 898 more Authors all top 5 Cited in 186 Serials 79 Journal of Mathematical Analysis and Applications 74 Applied Mathematics and Computation 46 Advances in Difference Equations 44 Nonlinear Analysis. 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