A new criterion for local non-solvability of homogeneous left invariant differential operators on nilpotent Lie groups.

Articles in the same Issue

1. Titelei
2. On the absolutely continuous spectrum of perturbed periodic Sturm-Liouville operators.
3. Lattice points in elliptic paraboloids.
4. Die Beschränktheit der Stückzahl der Fasern K-analytischer Abbildungen.
5. Symbolic algebras of monomial primes.
6. A generalization of Gauss sums and its applications to Siegel modular forms and L-functions associated with the vector space of quadratic forms.
7. On a Galois extension with restricted ramification related to the Selmer group of an elliptic curve with complex multiplication.
8. On Galois groups of p-closed algebraic number fields with restricted ramification II.
9. A typical convex surface contains no closed geodesic.
10. A new criterion for local non-solvability of homogeneous left invariant differential operators on nilpotent Lie groups.