Comparison results and steady states for the Fujita equation with fractional Laplacian
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
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- Abstract
- We study a semilinear PDE generalizing the Fujita equation whose evolution operator is the sum of a fractional power of the Laplacian and a convex non-linearity. Using the Feynman-Kac representation we prove criteria for asymptotic extinction versus finite time blow up of positive solutions based on comparison with global solutions. For a critical power non-linearity we obtain a two-parameter family of radially symmetric stationary solutions. By extending the method of moving planes to fractional powers of the Laplacian we prove that all positive steady states of the corresponding equation in a finite ball are radially symmetric.
- Autoren
- Matthias Birkner
- Jose Alfredo Lopez Mimbela
- Anton Wakolbinger
- Autoren-URL
- http://arxiv.org/abs/math/0302353v1
- Schlüsselwörter
- math.AP
- math.AP
- math.PR
- 60H30, 35K57, 35B05, 60G52
- Notes
- 17 pages, 2 figures
- Datum der Veröffentlichung
- 2003
- Datum der Datenerfassung
- 2003
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2003
- Titel
- Comparison results and steady states for the Fujita equation with fractional Laplacian
Files
0302353v1.pdf
Datenquelle: arXiv
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