Resumen de Uniqueness of very singular self-similar solution of a quasilinear degenerate parabolic equation with absorption
Jesús Ildefonso Díaz Díaz, José Evaristo Saa Requejo
We show the uniqueness of the very singular self-similar solution of the equation ut - ? pum + uq = 0.
The result is carried out by studying the stationary associate equation and by introducing a suitable change of unknown. That allows to assume the zero-order perturbation term in the new equation to be monotone increasing. A careful study of the behaviour of solutions near the boundary of their support is also used in order to prove the main result.
