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# Welcome to my website

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I am a Professor at the Department of Mathematics, University of Paris 7. I obtained a B.Sc. degree in 1982 from the University of Belgrade, Serbia and PhD degree in 1986 from the
University of Wisconsin-Madison, USA. Before moving to Paris in 1994
I spent some time teaching in Pasadena, Berkeley, Toronto and Pittsburgh.
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More bio details...

My research interests predominantly fall into four areas:

**Combinatorial Set Theory and Forcing**

- Forcing axioms, iterated forcing
- Partitions relations and Ramsey Theory
- Cardinal invariants of the continuum
- Cardinal Arithmetic and Shelah's PCF Theory
- Applications of Combinatorial Set Theory to Topology, Measure Theory and Banach Space Theory

**Games and Infinitary Languages**

- Long Ehrenfeucht-Fraïssé Games and Infinitary Languages
- Games on Boolean Algebras and Partial Orderings

**Classification Problems and Definable Equivalence Relations**

- The structure of Definable Equivalence Relations
- Complexity of various classification problems in Algebra and Analysis

**Theoretical Computer Science**

- Complexity Theory
- Derandomization of probabilistic algorithms and explicit constructions

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