On the norm of singular integral operator on curves with cusps
✍ Scribed by R. Duduchava; N. Krupnik
- Publisher
- SP Birkhäuser Verlag Basel
- Year
- 1994
- Tongue
- English
- Weight
- 219 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0378-620X
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📜 SIMILAR VOLUMES
## Abstract Necessary and sufficient analytical conditions are determined for a singular integral operator of the form __aP + bQ__ with bounded measurable coefficients to be a ϕ‐operator on __L__~__p__~(Γ) for all 1 < __p__ < ∞. where Γ is a closed Lyapunov curve.
## Abstract In this paper, we estimate an upper bound of the number of the cusps of a cuspidal plane curve. We prove that a cuspidal plane curve of genus __g__ has no more than (21__g__ +17)/2 cusps. For example, a rational cuspidal plane curve has no more than 8 cusps and an elliptic one has no mo