Abstract
In this article we study the initial boundary value problem of semilinear parabolic equations \({u_t-\triangle_\mathbb{B}u=|u|^{p-1}u}\) on a manifold with conical singularity, where \({\triangle_\mathbb{B}}\) is Fuchsian type Laplace operator investigated in Chen et al. (Calc Var 43:463–484, 2012) with totally characteristic degeneracy on the boundary x 1 = 0. By using a family of potential wells, we obtain existence theorem of global solutions with exponential decay and show the blow-up in finite time of solutions. Especially, the relation between the above two phenomena is derived as a sharp condition.
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Chen, H., Liu, G. Global existence and nonexistence for semilinear parabolic equations with conical degeneration. J. Pseudo-Differ. Oper. Appl. 3, 329–349 (2012). https://doi.org/10.1007/s11868-012-0046-9
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DOI: https://doi.org/10.1007/s11868-012-0046-9