Singular solutions of parabolic p-Laplacian with absorption

We consider, for p is an element of (1, 2) and q > 1, the p-Laplacian evolution equation with absorption u(t) = div(|del(u)|(p-2)del u)-u(q) in R-n x (0,infinity). We are interested in those solutions, which we call singular solutions, that are non- negative, non- trivial, continuous in R-n x [0, infinity) \ {(0, 0)}, and satisfy u(x, 0) = 0 for all x not equal 0. We prove the following: (i) When q >= p - 1 + p/n, there does not exist any such singular solution. (ii) When q < p - 1 + p/n, there exists, for every c > 0, a unique singular solution u = u(c) that satisfies integral R-n u(., t). c as t SE arrow 0. Also, uc NE arrow u(infinity) as c NE arrow 8, where u(infinity) is a singular solution that satisfies integral R-n u(infinity)(., t) -> infinity as t SE arrow 0. Furthermore, any singular solution is either u(infinity) or u(c) for some finite positive c.