Elliptic operators and their symbols

[摘要] We consider special elliptic operators in functional spaces on manifolds with a boundary which has some singular points. Such an operator can be represented by a sum of operators, and for a Fredholm property of an initial operator one needs a Fredholm property for each operator from this sum.

[学科分类] 外科医学

[关键词] elliptic operator;local representative;enveloping operator