C.V.: Talks at conferences, workshops and seminars

Invited speaker at:

• Algebraic Groups (08-12.04.2013), Oberwolfach, Germany
• Meeting of CMS Special Session on Geometry of Algebraic Varieties (07-10.12.2012), Montreal, Canada
• Joint Mathematics Meetings AMS Special Session on Linear Algebraic Groups: Their Arithmetic, Geometry, and Representations (04-07.01.2012), Boston, USA
• Ramification in Algebra and Geometry (16-20.05.2011), Emory University, USA
• K-Theory and Motives (22-25.03.2011), University of California at Los-Angeles, USA
• Motives and Homotopy Theory of Schemes (16-22.05.2010), Oberwolfach, Germany
• Mini Course-2009 "Torsors and Geometry of Quadrics" (22-26.06.2009), Lens, France
• Quadratic Forms and Linear Algebraic Groups (10-15.05.2009), Oberwolfach, Germany
• Quadratic forms, linear algebraic groups and cohomology (30.12.2008-04.01.2009), University of Hyderabad, India (2 lectures)
• Quadratic forms, Algebraic groups, Algebraic cobordism and Related Topics (26-30.08.2008), University of Nottingham, UK
• Summer school ”Motives of projective homogeneous varieties” (17.09-21.09.2007), Mainz, Germany (4 lectures)
• Workshop "Algebraic cycles, motives and A1-homotopy theory over general bases" (13.02-16.02.2007), Universitat Regensburg, Germany
• Algebraic groups, quadratic forms and related topics (02.09-07.09.2006), Banff, Canada
• Quadratic forms and linear algebraic groups (25.06-01.07.2006), Oberwolfach, Germany
• Mini-Course: "Quadratic Forms" (19.06-23.06.2006), Lens, France
• Workshop "Quadratic Forms, Linear Algebraic Groups, and Related Topics" (09.09 - 16.09.2005), Nottingham, UK
• Workshop on "Algebraic K-Theory, Linear Algebraic Groups and Related Structures" (09.02-11.02.2005), Bielefeld, Germany.
• Workshop on Algebraic K-Theory (02.10 - 05.10.2004), Centre de Recherches Mathematiques, Universite de Montreal, Canada
• Mini-cours, Lens, Juin 2004 "Formes Quadratiques" (21.06 - 25.06.2004), Universite d'Artois, France
• Workshop on Linear Algebraic Groups, Quadratic Forms and Related Topics (01.02 - 05.02.2004), Eilat, Israel
• Short communication at Workshop on Algebraic Groups, Quadratic forms and related topics (30.06 - 04.07.2003), Universite Franch-Comte Besancon, France.
• Algebraic K-Theory (04.08-10.08.2002), Mathematisches Forschungsinstitut Oberwolfach, Germany
• Workshop on Galois Cohomology and Linear Algebraic Groups (24 - 28.06.2002), Institute Bernoulli, EPFL, Lausanne, Switzerland
• Quadratic Forms and Algebraic Groups (12 - 18.05.2002),  Mathematisches Forschungsinstitut Oberwolfach, Germany
• Workshop on Witt Groups of Algebraic Varieties (05 - 09.03.2001), Universitaet Muenster, Germany
• Short communication at the Workshop on "Quadratic Forms and their Applications" (05 - 09.07.1999), University College Dublin, Ireland 
• Short communication at Summer School on "K-theory and Algebraic Groups" (28.06 - 03.07.1998), Levico-Terme (near Trento), Italy

Seminar talks:

• Thematic Program visitors seminar (15.03.2012), Fields Institute, Toronto, Canada
• Geometric Representation Theory Seminar (14.03.2012), Fields Institute, Toronto, Canada
• Algebra seminar (27.04.2012), University of Virginia, USA
• Colloquium (26.04.2012), University of Virginia, USA
• Algebra Seminar (28.11.2011), University of Alberta, Canada
• Algebra and Number Theory Seminar (07.11.2011), Emory University, USA
• Algebraic Groups Seminar (25.10.2011), University of British Columbia, Canada
• Algebraic Geometry seminar (24.10.2011), University of British Columbia, Canada
• Geometry and Topology seminar (23.09.2011), Universite du Quebec a Montreal, Canada
• Algebra Seminar (03.03.2011), University of Alberta, Canada
• Algebraic Geometry seminar (22.11.2010), Queen's University, Canada
• Séminaires de l'équipe de Topologie Algébrique (24.06.2010), Universite Paris 13, France
• Algebra Colloquium (11.03.2010), University of California at Los Angeles, USA
• Geometry and topology seminar (25.01.2010), University of Western Ontario, Canada
• Joint seminar Regensburg-Munchen (17.07.2009), University of Regensburg, Germany
• Algebraic Geometry and Arithmetic seminar (19.02.2009), University of Liverpool, UK
• Seminaire "Varietes rationnelles" (13.02.2009), ENS Paris, France
• Algebra Seminar (15.01.2009), University of Ottawa, Canada
• Seminaire Autour des Cycles Algebriques (05.11.2008), University Paris 6, France
• Geometry Seminar (03.10.2008), University of Cambridge, UK
• Seminario di Algebra e Geometria (29.05.2008), University of Genua, Italy
• Pure Math Colloquium (07.05.2008), University of Sheffield, UK
• Number theory seminar (08.02.2008), University of Nottingham, UK
• Seminar "Algebraische Gruppen" (02.07.2007), Universitat Bielefeld Germany.
• Seminar "Algebraische Gruppen" (23.01.2007), Universitat Bielefeld Germany.
• Seminaire de theorie des nombres de Chevaleret (18.12.2006), University of Paris 7, France
• Arbeitsgemeinschaft Algebra und Topologie (15.12.2006), University of Basel, Switzerland
• Seminar "Arithmetische Geometrie" (15.11.2006), University of Goettingen, Germany
• Seminar DFG-Forschergruppe (03.11.2006), University of Regensburg, Germany
• Oberseminar "Motivische Algebraische Topologie" (27.04.2006), University of Muenchen, Germany
• Staffcolloqium (06.04.2006), University of Utrecht, Netherlands
• Algebra seminar (28.02.2006), University of Edmonton, Canada
• Number Theory Seminar (24.01.2006), Max-Planck-Institut fur Mathematik, Bonn, Germany.
• Oberseminar "Agebra und Homotopie" (19.10.2005), University of Bielefeld, Germany
• Oberseminar "Arithmetische Geometrie" (15.06.2005), University of Goettingen, Germany
• Number Theory Seminar (08.06.2005), Max-Planck-Institut fur Mathematik, Bonn, Germany
• AG Algebraische Gruppen (10.05.2005), University of Bielefeld, Germany
• Séminaire "Variétés rationnelles" (15.01.2005), École Normale Supérieure, Paris, France
• Algebra - Topology Seminar (17.01.2005), ETH, Zürich, Switzerland
• Forschungsseminar "Algebraische Geometrie" (23.11.2004), Humboldt Universität zu Berlin, Germany
• Arithmetische Geometrie seminar (05.11.2004), Universität Regensburg, Germany
• Oberseminar Algebraische Gruppen (27.10.2004), Mathematisches Institut Georg-August-Universität Göttingen, Germany
• Oberseminar Algebraische Geometrie (05.05.2004), Mathematisches Institut Georg-August-Universität Göttingen, Germany
• Department Seminar (12.01.2004), Mathematisches Institut, Universität Heidelberg, Germany
• MathDepartment Seminar (07.07.2003), Essen University, Germany
• SFB478 seminar (15.05.2003), University of Münster, Germany
• Seminaire d'Algebre et de Theorie des Nombres (14.03.2002), Ecole Polytechnique Federale de Lausanne, Switzerland
• Groupe de travail de Geometrie Algebrique (22.02.2002), Institut des Hautes Etudes Scientifiques, Bures-sur-Yvette, France
• Séminaire "Variétés rationnelles" (24.11.2001), École Normale Supérieure, Paris, France
• Seminar des Graduiertenkollegs (07.06.2001), Universitaet Muenster, Germany