Well-posedness is proved in the space W 2, p, \* (0) & W 1, p 0 (0) for the Dirichlet problem u=0 a.e. in 0 on 0 if the principal coefficients a ij (x) of the uniformly elliptic operator belong to VMO & L (0). 1999 Academic Press 1. INTRODUCTION In the last thirty years a number of papers have bee
Elliptic equations for measures: Regularity and global bounds of densities
✍ Scribed by Vladimir I. Bogachev; Nicolai V. Krylov; Michael Röckner
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 200 KB
- Volume
- 85
- Category
- Article
- ISSN
- 0021-7824
No coin nor oath required. For personal study only.
✦ Synopsis
We consider elliptic equations of the form L * μ = ν for measures on R n . The membership of solutions in the Sobolev classes W p,1 (R n ) is established under appropriate conditions on the coefficients of L. Bounds of the form (x) CΦ(x) -1 for the corresponding densities are obtained.
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## Dedicated to the memory of Leonid R. Volevich Let X = (X1, . . . , Xm) be an infinitely degenerate system of vector fields. We study the existence and regularity of multiple solutions of the Dirichlet problem for a class of semi-linear infinitely degenerate elliptic operators associated with th