Electron. J. Differential Equations, Vol. 2018 (2018), No. 69, pp. 1-20.

Oblique derivative problem for elliptic second-order semi-linear equations in a domain with a conical boundary point

Mariusz Bodzioch, Mikhail Borsuk

Abstract:
This article concerns the oblique boundary value problem for elliptic semi-linear equations in a domain with a conical point on the boundary. We investigate the asymptotic behavior of strong solutions near a boundary conical point. New regularity theorems are established under the least possible assumptions on the equation coefficients. The investigation of asymptotic properties of solutions can be used to obtain new solvability theorems. The results obtained in this paper are extensions of our previous results to a wider class of elliptic equations.

Submitted March 2, 2018. Published March 14, 2018.
Math Subject Classifications: 35J20, 35J25, 35J61.
Key Words: Elliptic equations; oblique problem; conical points.

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Mariusz Bodzioch
Faculty of Mathematics and Computer Science
University of Warmia and Mazury in Olsztyn
Sloneczna 54, 10-710 Olsztyn, Poland
email: mariusz.bodzioch@matman.uwm.edu.pl
Mikhail Borsuk
Faculty of Mathematics and Computer Science
University of Warmia and Mazury in Olsztyn
Sloneczna 54, 10-710 Olsztyn, Poland
email: borsuk@uwm.edu.pl

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