Electronic Journal of Differential Equations, 
Vol. 2020 (2020), No. 67, pp. 1-8.

Title: Multiple solutions for mixed boundary value problems with phi-Laplacian operators 
       
Author: Dionicio Pastor Dallos Santos (Univ. de Buenos Aires, Argentina)

Abstract:
 Using  Leray-Schauder degree theory and the method of upper and lower solutions
 we establish existence and multiplicity  of solutions for problems of the form
 $$\displaylines{
 (\phi(u'))'  = f(t,u,u') \cr
 u(0)= u(T)=u'(0),
 }$$
 where $\phi$ is an increasing homeomorphism
 such that $\phi(0)=0$, and  f is a continuous function.
 
Submitted March 2, 2020. Published June 30, 2020.
Math Subject Classifications: 34B15, 47H10, 47H11.
Key Words: Nonlinear Schrodinger equation; inviscid limit; linear damping; 
           forcing term.