Projects in Mathematics Muenster
Research Interests

Research Interests

$\bullet$ Operatoralgebren und nichtkommutative Geometrie

Selected Publications

Selected Publications of Siegfried Echterhoff

$\bullet$ A. Buss, S. Echterhoff, and R. Willett. Exotic crossed products and the Baum- Connes conjecture. J. Reine Angew. Math., 740:111–159, 2018.

$\bullet$ J. Cuntz, S. Echterhoff, and X. Li. On the K-theory of the C*-algebra generated by the left regular representation of an Ore semigroup. J. Eur. Math. Soc. (JEMS), 17(3):645–687, 2015.

$\bullet$ J. Cuntz, S. Echterhoff, and X. Li. On the $K$-theory of crossed products by automorphic semigroup actions. Q. J. Math., 64(3):747–784, 2013.

$\bullet$ S. Echterhoff, W. Lück, N. C. Phillips, and S. Walters. The structure of crossed products of irrational rotation algebras by finite subgroups of ${\rm SL}_2(\Bbb Z)$. J. Reine Angew. Math., 639:173–221, 2010.

$\bullet$ S. Echterhoff, S. Kaliszewski, J. Quigg, and I. Raeburn. A categorical approach to imprimitivity theorems for $C^*$-dynamical systems. Mem. Amer. Math. Soc., 180(850):viii+169, 2006.

$\bullet$ J. Chabert, S. Echterhoff, and H. Oyono-Oyono. Going-down functors, the Künneth formula, and the Baum-Connes conjecture. Geom. Funct. Anal., 14(3):491–528, 2004.

$\bullet$ J. Chabert, S. Echterhoff, and R. Nest. The Connes- Kasparov conjecture for almost connected groups and for linear $p$-adic groups. Publ. Math. Inst. Hautes \'Etudes Sci., (97):239–278, 2003.

$\bullet$ J. Chabert and S. Echterhoff. Permanence properties of the Baum- Connes conjecture. Doc. Math., 6:127–183, 2001.

$\bullet$ S. Echterhoff and D. P. Williams. Crossed products by $C_0(X)$-actions. J. Funct. Anal., 158(1):113–151, 1998.

$\bullet$ S. Echterhoff. Crossed products with continuous trace. Mem. Amer. Math. Soc., 123(586):viii+134, 1996.

Current Publications

$\bullet$ A. Buss, S. Echterhoff, and R. Willett. Amenability and weak containment for actions of locally compact groups on $c^*$-algebras. arXiv e-prints, March 2020. arXiv:2003.03469.

$\bullet$ B. Bekka and S. Echterhoff. On unitary representations of algebraic groups over local fields. arXiv e-prints, March 2020. arXiv:2003.02297.

$\bullet$ M. Amini, S. Echterhoff, and H. Nikpey. $Cˆ*$-Operator systems and crossed products. arXiv e-prints, October 2019. arXiv:1910.06605.