References

SOLVABILITY OF DUFFING EQUATIONS AT RESONANCE


[1] H. Asakawa, Landesman-Lazer type problems for Fucik spectrum, Nonlinear Anal. 26 (1996), 407-414.

[2] Y. Dong, On Equivalent conditions for the solvability of equation satisfying linear boundary conditions with f restricted by linear growth conditions, J. Math. Anal. Appl. 245 (2000), 204-220.

[3] N. Dunford and J. Scharts, Linear Operators, Vol I., Interscience, New York, 1958.

[4] P. Hartman, Ordinary differential equations, Second Edition, Birkhauser, Boston, Basel, Stuttgart (1982).

[5] C. Kuo, Solvability of a nonlinear two point boundary value problem at resonance, J. Differential Equations 140 (1997), 1-9.

[6] H. Wang and Y. Li, Two point boundary value problems for second order ordinary differential equations across many resonant points, J. Math. Anal. Appl. 179 (1993), 61-75.