# Georges Skandalis

**Georges Skandalis** (Greek: Γεώργιος Σκανδάλης; born 5 November 1955, in Athens) is a Greek and French mathematician, known for his work on noncommutative geometry and operator algebras.

After following secondary education and *classes préparatoires scientifiques* in the parisian *Lycée Louis-le-Grand*, Skandalis studied from 1975 at 1979 at *l’École Normale Supérieure de la rue d’Ulm* with *agrégation* in 1977. From 1979 he was an assistant^{ [fr]} at the University of Paris VI, where under Alain Connes in 1986 he earned his doctorate (*doctorat d´État*).^{[1]} From 1980 to 1988 he was *attaché de recherches* and then *chargé de recherches* at CNRS and as of 1988 Professor at the University of Paris VII (in the *Institut de Mathématiques de Jussieu*).

He works on operator algebras, K-theory of operator algebras, groupoids, locally compact quantum groups and singular foliations.

In 2002 with Nigel Higson and Vincent Lafforgue, Skandalis published counterexamples to a generalization of the Baum–Connes conjecture (*i.e.* Baum-Connes conjecture with coefficients) in various special cases, based on work by Mikhail Gromov.^{[2]}

In 1990 Skandalis was an invited speaker at the International Congress of Mathematicians in Kyoto (*Operator Algebras and Duality*). He was a member of Bourbaki.^{[3]}

## Selected worksEdit

- with Joachim Cuntz, Boris Tsygan:
*Cyclic homology in non-commutative geometry*(=*Encyclopaedia of Mathematical Sciences. Operator Algebras and Non-Commutative Geometry.*vol. 121). Springer, Berlin et al. 2004, ISBN 3-540-40469-4 (pp. 115–134: Skandalis:*Noncommutative Geometry, the Transverse Signature Operator, and Hopf Algebras (after A. Connes and H. Moscovici).*Translated by Raphaël Ponge and Nick Wright. doi:10.1007/978-3-662-06444-3_3). - with Gennadi Kasparov:
*Groups acting properly on "bolic“ spaces and the Novikov conjecture.*In:*Annals of Mathematics.*vol. 158, no. 1, 2003, pp. 165–206, doi:10.4007/annals.2003.158.165. - with Jean Louis Tu and Guoliang Yu:
*The coarse Baum-Connes conjecture and groupoids.*In:*Topology.*vol. 41, no. 4, 2002, ISSN 0040-9383, pp. 807–834, doi:10.1016/S0040-9383(01)00004-0.

## ReferencesEdit

**^**Georges Skandalis at the Mathematics Genealogy Project**^**Nigel Higson; Vincent Lafforgue; Georges Skandalis (2002). "Counterexamples to the Baum-Connes conjecture".*Geometric and Functional Analysis*.**12**(2): 330–354. CiteSeerX 10.1.1.174.1003. doi:10.1007/s00039-002-8249-5. ISSN 1016-443X..**^**Maurice Mashaal (2006). "list of members at a meeting in 1995".*Bourbaki. A Secret Society of Mathematicians*. Providence RI: American Mathematical Society. p. 17. ISBN 978-0-8218-3967-6.