On the Approximate Controllability for Higher Order Parabolic Nonlinear Equations of Cahn-Hilliard Type
Jesús Ildefonso Díaz Díaz, Angel Manuel Ramos · Birkhäuser Basel eBooks · 1998
We prove the approximate controllability property for some higher order parabolic nonlinear equations of Cahn-Hilliard type when the nonlinearity is of sublinear type at infinity. We also give a counterexample showing that this property may fail when the nonlinearity is of superlinear type.