• Media type: E-Article
  • Title: Normal Derivative for Bounded Domains with General Boundary
  • Contributor: Guanglu, Gong; Minping, Qian; Silverstein, Martin L.
  • imprint: American Mathematical Society, 1988
  • Published in: Transactions of the American Mathematical Society
  • Language: English
  • ISSN: 0002-9947
  • Origination:
  • Footnote:
  • Description: <p>Let $D$ be a general bounded domain in the Euclidean space $R^n$. A Brownian motion which enters from and returns to the boundary symmetrically is used to define the normal derivative as a functional for $f$ with $f$, $\nabla f$ and $\Delta f$ all in $L^2$ on $D$. The corresponding Neumann condition (normal derivative $= 0$) is an honest boundary condition for the $L^2$ generator of reflected Brownian notion on $D$. A conditioning argument shows that for $D$ and $f$ sufficiently smooth this general definition of the normal derivative agrees with the usual one.</p>
  • Access State: Open Access