The Dirichlet problem for singular elliptic equations

Bu makalede $L=-sum_{i=1}^n frac{partial^2}{partial x_i^2} - sum_{i=k+1}^n frac{2mu_i}{x_i} frac{partial}{partial x_i}$; $2mu_i>1$, i=k+1,...,n formunda singüler katsayılı eliptik operatör, $L^2$ metodu ile çalışıldı ve bu operatör için Dirichlet formu elde edildi. Dirichlet formu ile Dirichlet problemi kuruldu. Bu problemin çözümünün tekliği Lax-Milgram lemmasindan yararlanılarak incelendi. Ayrıca singüler katsayılı eliptik denklemin daha genel denklemi olan $L_2u=sum_{i,j=1}^n frac{partial^2 u}{partial x_i partial x_j} + sum_{i=1}^k b_i frac{partial u}{partial x_i} + sum_{i=k+1}^n frac{h_i}{x_i} frac{partial u}{partial x_i} + cu = f$ denklemi ele alındı. Ve bu denklemin çözümünün tekliği için barrier fonksiyonlar yardımıyla eliptik denklemlerin maximum özelliğinden yararlanıldı.

Singüler eliptik denklemler için Dirichlet problemi

In this article, the linear elliptic operator with singular coefficients $L=-sum_{i=1}^n frac{partial^2}{partial x_i^2} - sum_{i=k+1}^n frac{2mu_i}{x_i} frac{partial}{partial x_i}$; $2mu_i>1$, i=k+1,...,n is studied by the $L^2$ method, and the Dirichlet form is obtained for this operator. The Dirichlet problem is constructed with the Dirichlet form.. Using the Lax-Milgram lemma, the uniqueness of the solution for this problem is investigated. Furthermore, the more general equation $L_2u=sum_{i,j=1}^n frac{partial^2 u}{partial x_i partial x_j} + sum_{i=1}^k b_i frac{partial u}{partial x_i} + sum_{i=k+1}^n frac{h_i}{x_i} frac{partial u}{partial x_i} + cu = f$ is considered. To find the uniqueness of the solution of this equation, the maximum properties of elliptic equations, with the help of barrier functions, are used.

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