In this note a matrix partial differential operator is considered. It is shown that under certain conditions it defines a closed operator with nonempty resolvent set, and its essential spectrum is determined. In the symmetric case G. D. RAIKOV obtained earlier corresponding results (under slightly d
On the essential spectrum of partial differential boundary problems
✍ Scribed by František Wolf
- Publisher
- John Wiley and Sons
- Year
- 1959
- Tongue
- English
- Weight
- 874 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0010-3640
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