Various behaviors of solutions for a semilinear heat equation after blowup

The present paper is concerned with a Cauchy problem for a semilinear heat equation (P)ut=Δu+upin RN×(0,∞),u(x,0)=u0(x)⩾0in RN.We show that if p>N-2N-1N-4-2N-1 and N⩾11, then there exists a solution ui(i=1,2,3) of (P) which blows up at t=Ti<+∞, becomes a regular solution for all t>Ti and behaves as follows: