Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In mathematics - specifically, in the theory of partial differential equations - a semi-elliptic operator is a partial differential operator satisfying a positivity condition slightly weaker than that of being an elliptic operator. Every elliptic operator is also semi-elliptic, and ...Full description
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In mathematics - specifically, in the theory of partial differential equations - a semi-elliptic operator is a partial differential operator satisfying a positivity condition slightly weaker than that of being an elliptic operator. Every elliptic operator is also semi-elliptic, and semi-elliptic operators share many of the nice properties of elliptic operators: for example, much of the same existence and uniqueness theory is applicable, and semi-elliptic Dirichlet problems can be solved using the methods of stochastic analysis.