Abstract
We study the adjointness problem for the closed extensions of a general b-elliplic operator A ∈ x-ν Diffbm (M;E), ν > 0, initially defined as an unbounded operator A: Ccinfin; (M;E) ⊃ xμLb2(M;E) → xμLb2(M;E), μ ∈ ℝ. The case where A is a symmetric semibounded operator is of particular interest, and we give a complete description of the domain of the Friedrichs extension of such an operator.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 357-408 |
| Number of pages | 52 |
| Journal | American Journal of Mathematics |
| Volume | 125 |
| Issue number | 2 |
| DOIs | |
| State | Published - Apr 2003 |
All Science Journal Classification (ASJC) codes
- General Mathematics