- Estimates for the Heat Kernel Estimates on weighted graphs (2001)
- Presentation at the University of Natal, Pietermaritzburg, South Africa, 25 May 2001. See the corresponding paper "A Note on Heat Kernel Estimates on Weighted Graphs with Two-Sided Bounds on the Weights".
- Euclidean reconstruction in quantum field theory: between tempered distributions and Fourier hyperfunctions (1997)
- In this short note on my talk I want to point out the mathematical difficulties that arise in the study of the relation of Wightman and Euclidean quantum field theory, i.e., the relation between the hierarchies of Wightman and Schwinger functions. The two extreme cases where the reconstructed Wightman functions are either tempered distributions - the well-known Osterwalder-Schrader reconstruction - or modified Fourier hyperfunctions are discussed in some detail. Finally, some perpectives towards a classification of Euclidean reconstruction theorems are outlined and preliminary steps in that direction are presented.