## Abstract We describe the essential spectrum of a hypoelliptic pseudo‐differential operator which is the sum of a constantcoefficients operator and an operator with coefficients vanishing at infinity. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
✦ LIBER ✦
On the L2 continuity of pseudo-differential operators
✍ Scribed by Lars Hörmander
- Publisher
- John Wiley and Sons
- Year
- 1971
- Tongue
- English
- Weight
- 244 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0010-3640
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