Perron Method
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In the mathematical study of harmonic functions, the Perron method, also known as the method of subharmonic functions, is a technique introduced by Oskar Perron for the solution of the Dirichlet problem for Laplace''s equation. The Perron method works by finding the largest subharmonic function with boundary values below the desired values; the "Perron solution" coincides with the actual solution of the Dirichlet problem if the problem is soluble. The Dirichlet proble...
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In the mathematical study of harmonic functions, the Perron method, also known as the method of subharmonic functions, is a technique introduced by Oskar Perron for the solution of the Dirichlet problem for Laplace''s equation. The Perron method works by finding the largest subharmonic function with boundary values below the desired values; the "Perron solution" coincides with the actual solution of the Dirichlet problem if the problem is soluble. The Dirichlet problem is to find a harmonic function in a domain, with boundary conditions given by a continuous function varphi(x). The Perron solution is defined by taking the pointwise supremum over a family of functions S_varphi.
