On the first eigenvalue of non-uniformly elliptic boundary value problems
β Scribed by Neil S. Trudinger
- Publisher
- Springer-Verlag
- Year
- 1980
- Tongue
- French
- Weight
- 274 KB
- Volume
- 174
- Category
- Article
- ISSN
- 0025-5874
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## History of the problem While it is relatively easy to get estimations of upper bounds for eigerivalues of elliptic differential operators with the well-known methods of J. W. S. RAYLEIGH and W. RITZ, the estimation of lower bounds is much more complicated. Estimations of lower bounds for eigenv
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
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