Parabolic quasi-concavity for solutions to parabolic problems in convex rings
β Scribed by Kazuhiro Ishige; Paolo Salani
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 281 KB
- Volume
- 283
- Category
- Article
- ISSN
- 0025-584X
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β¦ Synopsis
Abstract
We investigate some geometric properties of level sets of the solutions of parabolic problems in convex rings. We introduce the notion of parabolic quasiβconcavity, which involves time and space jointly and is a stronger property than the spatial quasiβconcavity, and study the convexity of superlevel sets of the solutions (Β© 2010 WILEYβVCH Verlag GmbH & Co. KGaA, Weinheim)
π SIMILAR VOLUMES
The article is devoted to the solution of the invariants problem for the one-dimensional parabolic equations written in the two-coefficient canonical form used recently by N.H. Ibragimov: A simple invariant condition is obtained for determining all equations that are reducible to the heat equation