A commutative diagram connected with a differential operator in a domain (Q1190938)

The author considers a linear differential operator of a general form with smooth coefficients in a bounded domain in \(\mathbb{R}^ n\). He constructs an exact commutative diagram related to this operator and finds conditions under which the operator has a well-posed boundary problem. In particular, the description is obtained for the traces of functions from the kernel of the maximal extension.