Hans Jørgen Noreng

2 Jørgen Ellegaard

We prove that the mapping class group of a closed oriented surface of genus at least two does not have Kazhdan’s property (T).

Jørgen Bang - Jensen , Gregory Gutin

JØRGEN ELLEGAARD ANDERSEN of Axelrod

We prove that the sequence of projective representations of the mapping class group obtained from the projective flat connection in the SU(n)Verlinde bundles over Teichmüller space is asymptotically faithful, that is the intersection over all levels of the kernels of these representations is trivial, whenever the genus of the underlying surface is at least 3. For the genus 2 case, we prove that...

Jørgen Lindskov Knudsen, Ole Lehrmann Madsen

Object-orientation has a long tradition at the Computer Science Department, Aarhus University, starting with Simula in the early seventies. For more than 20 years there have been courses in object-oriented programming, including BETA, Smalltalk, Self and others. Recently objectorientation has started to be integrated in other parts of the curriculum such as in software engineering, distributed ...

Jørgen Ellegaard Andersen , Gregor Masbaum , And

We show that the Nielsen-Thurston classification of mapping classes of the sphere with four marked points is determined by the quantum SU(n) representations, for any fixed n ≥ 2. In the Pseudo-Anosov case we also show that the stretching factor is a limit of eigenvalues of (non-unitary) SU(2)TQFT representation matrices. It follows that at big enough levels, PseudoAnosov mapping classes are rep...