Rigidity Theorems for Actions of Product Groups and Countable Borel Equivalence Relations

Extensions of Positive-Definite Functions

Trellis Theory

Exposed Points of Convex Sets and Weak Sequential Convergence: Applications to Invariant Means, to Existence of Invariant Measures for a Semigroup of Markov Operators Etc ...

Singular Torsion and the Splitting Properties

Embeddability and Structure Properties of Real Curves

The Existence of Value in Differential Games

Quadratic Diophantine Equations

Cohomology in Banach Algebras

On $\lambda $-Nuclearity

Theta Functions, Kernel Functions and Abelian Integrals

Compact Zero-Dimensional Metric Spaces of Finite Type