Volume 39, No. 2 (2003)

The Structure of Group $C^{\ast }$-algebras of the Generalized Dixmier Groups

Carleman Inequalities for Parabolic Equations in Sobolev Spaces of Negative Order and Exact Controllability for Semilinear Parabolic Equations

A Maillet Type Theorem for First Order Singular Nonlinear Partial Differential Equations

Eigenvalue Asymptotics for the Schrödinger Operator with Steplike Magnetic Field and Slowly Decreasing Electric Potential

Noncommutative Sobolev Spaces, $C^{\infty }$ Algebras and Schwartz Distributions Associated with Semicircular Systems

On a Certain Semiclassical Problem on Wiener Spaces

The Poincaré Series of Some Special Quasihomogeneous Surface Singularities