Abstract
This paper is concerned with the asymptotic behavior on \({\partial\Omega}\) of boundary blow-up solutions to semilinear elliptic equations
where b(x) is a nonnegative function on \({\Omega}\) and may vanish on \({\partial\Omega}\) at a very degenerate rate; f is nonnegative function on [0,∞) and normalized regularly varying or rapidly varying at infinity. The main feature of this paper is to establish a unified and explicit asymptotic formula when the function f is normalized regularly varying or grows faster than any power function at infinity. The effect of the mean curvature of the nearest point on the boundary in the second-order approximation of the boundary blow-up solution is also discussed. Our analysis relies on suitable upper and lower solutions and the Karamata regular variation theory.
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Huang, S. Asymptotic behavior of boundary blow-up solutions to elliptic equations. Z. Angew. Math. Phys. 67, 3 (2016). https://doi.org/10.1007/s00033-015-0606-y
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DOI: https://doi.org/10.1007/s00033-015-0606-y