Qingkai Kong

Personal Home Page

http://www.math.niu.edu/~kong/

Articles in Scholarly Journals [Incomplete List]

  1. Sturm–Liouville Problems on Time Scales with Separated Boundary Conditions
    Results in Mathematics, 2008
  2. Geometric aspects of Sturm–Liouville problems III. Level surfaces of the nnth eigenvalue
    Journal of Computational and Applied Mathematics, vol. 208, no. 1, pp. 176–193, 2007
  3. Symmetric positive solutions of nonlinear boundary value problems
    Journal of Mathematical Analysis and Applications, vol. 326, no. 2, pp. 1310–1327, 2007
  4. Second-order boundary value problems with nonhomogeneous boundary conditions (II)
    Journal of Mathematical Analysis and Applications, vol. 330, no. 2, pp. 1393–1411, 2007
  5. Nonoscillation and oscillation of second order half-linear differential equations
    Journal of Mathematical Analysis and Applications, vol. 332, no. 1, pp. 512–522, 2007
  6. Existence and nonexistence of solutions of second-order nonlinear boundary value problems
    Nonlinear Analysis: Theory, Methods & Applications, vol. 66, no. 11, pp. 2635–2651, 2007
  7. Right-indefinite half-linear Sturm-Liouville problems
    Computers & Mathematics with Applications, 2007
  8. Right-definite half-linear Sturm–Liouville problems
    Proceedings of the Royal Society of Edinburgh: Section A Mathematics, vol. 137, no. 01, p. 77, 2007
  9. A Telescoping Principle for Oscillation of Second Order Differential Equations on a Time Scale
    Rocky Mountain Journal of Mathematics, vol. 36, no. 1, pp. 149–181, 2006
  10. New kamenev-type oscillation criteria for second-order differential equations on a measure chain
    Computers & Mathematics with Applications, vol. 50, no. 8-9, pp. 1211–1230, 2005
  11. Second-order boundary value problems with nonhomogeneous boundary conditions (I)
    Mathematische Nachrichten, vol. 278, no. 1-2, pp. 173–193, 2005
  12. Multiplicity of Sturm–Liouville eigenvalues
    Journal of Computational and Applied Mathematics, vol. 171, no. 1-2, pp. 291–309, 2004
  13. Singular left-definite Sturm?Liouville problems
    Journal of Differential Equations, vol. 206, no. 1, pp. 1–29, 2004
  14. Kamenev-type and interval oscillation criteria for second-order linear differential equations on a measure chain
    Journal of Mathematical Analysis and Applications, vol. 294, no. 2, pp. 621–643, 2004
  15. Transactions of the American Mathematical Society, vol. 356, no. 01, pp. 135–158, 2004
  16. Multi-point boundary value problems of second-order differential equations (I)
    Nonlinear Analysis, vol. 58, no. 7-8, pp. 909–931, 2004
  17. Even order nonlinear eigenvalue problems on a measure chain
    Nonlinear Analysis, vol. 52, no. 8, pp. 1891–1909, 2003
  18. On some eigenvalue problems in fuel-cell dynamics
    Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol. 459, no. 2029, pp. 241–261, 2003
  19. Erratum Journal of Difference Equations and Applications , 2003 Vol. 9(1), pp. 121-133
    The Journal of Difference Equations and Applications, vol. 9, no. 6, pp. 615–627, 2003
  20. Indefinite Sturm–Liouville problems
    Proceedings of the Royal Society of Edinburgh: Section A Mathematics, vol. 133, no. 03, p. 639, 2003
  21. Positive solutions of boundary value problems for third-order functional difference equations
    Computers & Mathematics with Applications, vol. 44, no. 3-4, pp. 481–489, 2002
  22. Nonoscillation of a class of neutral differential equations
    Computers & Mathematics with Applications, vol. 44, no. 5-6, pp. 643–654, 2002
  23. Left-Definite Sturm–Liouville Problems
    Journal of Differential Equations, vol. 177, no. 1, pp. 1–26, 2001
  24. Sturm–Liouville Problems with Finite Spectrum
    Journal of Mathematical Analysis and Applications, vol. 263, no. 2, pp. 748–762, 2001
  25. Dependence of the nth Sturm–Liouville Eigenvalue on the Problem
    Journal of Differential Equations, vol. 156, no. 2, pp. 328–354, 1999
  26. Interval Criteria for Oscillation of Second-Order Linear Ordinary Differential Equations
    Journal of Mathematical Analysis and Applications, vol. 229, no. 1, pp. 258–270, 1999
  27. POSITIVE SOLUTIONS OF HIGHER-ORDER BOUNDARY-VALUE PROBLEMS
    Proceedings of the Edinburgh Mathematical Society, vol. 48, no. 2, pp. 445–464, 1999
  28. Inequalities among eigenvalues of Sturm–Liouville problems
    Journal of Inequalities and Applications, vol. 3, no. 1, pp. 25–43, 1999
  29. Dependence of Eigenvalues on the Problem
    Mathematische Nachrichten, vol. 188, no. 1, pp. 173–201, 1997
  30. Dependence of Eigenvalues of Sturm–Liouville Problems on the Boundary
    Journal of Differential Equations, vol. 126, no. 2, pp. 389–407, 1996
  31. Eigenvalues of Regular Sturm–Liouville Problems
    Journal of Differential Equations, vol. 131, no. 1, pp. 1–19, 1996
  32. Oscillation for Systems of Functional Differential Equations
    Journal of Mathematical Analysis and Applications, vol. 198, no. 2, pp. 608–619, 1996
  33. Some necessary and sufficient conditions for oscillation of neutral differential equations
    Applicable Analysis, vol. 60, no. 1, pp. 133–148, 1996
  34. Oscillation of second order nonlinear difference equations
    Journal of Difference Equations and Applications, vol. 1, no. 3, pp. 271–289, 1995
  35. SIAM Journal on Mathematical Analysis, vol. 26, no. 4, Article ID 0526052, 1995
  36. Dissipation, boundedness and persistence of general ecological systems
    Nonlinear Analysis, vol. 25, no. 11, pp. 1237–1250, 1995
  37. On the Oscillation of Differential Equations with an Oscillatory Coefficient
    Transactions of the American Mathematical Society, vol. 347, no. 5, p. 1831, 1995
  38. Oscillation Results on Linear Systems of Difference Equations
    Proceedings of the American Mathematical Society, vol. 123, no. 10, p. 3057, 1995
  39. Boundary value problems for singular second-order functional differential equations
    Journal of Computational and Applied Mathematics, vol. 53, no. 3, pp. 377–388, 1994
  40. Kamenev Type Theorems for Second Order Matrix Differential Systems
    Proceedings of the American Mathematical Society, vol. 117, no. 4, p. 957, 1993
  41. On Olech-Opial-Wazewski oscillation criteria for second order nonlinear equations1
    Nonlinear Analysis, vol. 14, no. 4, pp. 379–391, 1990
  42. Stieltjes integral inequalities of Gronwall type and applications
    Annali di Matematica Pura ed Applicata, vol. 157, no. 1, pp. 77–97, 1990
  43. Asymptotic Behavior of a Class of Nonlinear Differential Equations of nth Order
    Proceedings of the American Mathematical Society, vol. 103, no. 3, p. 831, 1988