3 papers
math.AP2010
Multiplicity and regularity of periodic solutions for a class of degenerate semilinear wave equations
Jean Marcel Fokam
We prove the existence of infinitely many classical periodic solutions for a class of degenerate semilinear wave equations: \[ u_{tt}-u_{xx}+|u|^{s-1}u=f(x,t), \] for all . In…
math.AP2010
Multiplicity and regularity of large periodic solutions with rational frequency for a class of semilinear wave equations
Jean Marcel Fokam
We prove the existence of infinitely many classical periodic solutions for a class of semilinear wave equations with periodic boundary conditions. Our argument relies on some new e…
math.AP2010
Multiplicity and regularity of large periodic solutions with rational frequency for a class of semilinear monotone wave equations
Jean Marcel Fokam
We prove existence of infinitely many classical periodic solutions with periodic boundary conditions for a class of monotone semilinear wave equations. Our argument relies on some…