Center for Mathematical Sciences
Faculty of Science
S-221 00 LUND
Tel: +46-46-222 44 62
Fax: +46-46-222 42 13
- A paper resolves the Nirenberg-Treves conjecture: that condition ($\Psi$) is sufficient for local solvability for operators of principal type (Ann. of Math. 163 (2006), no. 2, 405-444).
- Joint paper with Johannes
Sjöstrand and Maciej Zworski about the pseudo-spectra of
semi-classical operators (Comm. Pure Appl. Math. 57 (2004),
- A preprint that studies
pseudospectrum for systems of semiclassical operators (Anal. PDE 1 (2008), 323-373).
- Another preprint that generalizes
the Nirenberg-Treves conjecture to quadratic systems of principal type having
constant characteristics (corrected version February 25, 2010). To appear in "Geometric Aspects of Analysis and Mechanics", In Honor of Hans Duistermaat's 65th Birthday.
- Latest preprint that proves
solvability and subellipticity results of quasi-symmetrizable systems.
In "Advances in Phase Space Analysis of Partial Differential Equations", In Honor of Ferruccio Colombini's 60th Birthday.
"Spectral Instability and Microlocal Analysis", June 15-17 2010
Member of the Royal Swedish Academy of Sciences
Member of the Royal Physiographic Society in Lund
Former President of the Swedish Mathematical Society
President of the Lund Mathematical Society
Page last changed May 3, 2011.