Differentiability of solutions to the neumann problem with low-regularity data via dynamical systems

We obtain conditions for the differentiability of weak solutions for a second-order uniformly elliptic equation in divergence form with a homogeneous co-normal boundary condition. The modulus of continuity for the coefficients is assumed to satisfy the square-Dini condition and the boundary is assumed to be differentiable with derivatives also having this modulus of continuity. Additional conditions for the solution to be Lipschitz continuous or differentiable at a point on the boundary depend upon the stability of a dynamical system that is derived from the coefficients of the elliptic equation. © Springer International Publishing AG, part of Springer Nature 2018.

Авторы
Maz’ya V. 1, 2 , McOwen R.3
Сборник статей
Издательство
Springer International Publishing
Язык
Английский
Страницы
345-387
Статус
Опубликовано
Том
261
Год
2018
Организации
  • 1 Department of Mathematics, Linköping University, Linköping, SE-581 83, Sweden
  • 2 RUDN University, 6 Miklukho-Maklay St, Moscow, 117198, Russian Federation
  • 3 Department of Mathematics, Northeastern University, Boston, MA 02115, United States
Ключевые слова
Asymptotically constant; Co-normal boundary condition; Differentiability; Divergence form; Dynamical system; Elliptic equation; Lipschitz continuity; Modulus of continuity; Square-Dini condition; Uniformly stable; Weak solution
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