Selected communications of Alexander D. Rahm (international conferences in boldface)

 Invited by 
1721 Sept. 2018  GAP days, University of Siegen, Germany, talk “The Rigid Facets Subdivision Algorithm in GAP”.  Mohamed Barakat, Max Horn 
1114 Sept. 2018  Dragon Applied Topology Conference, at the Department of Mathematics, University of Swansea, UK.  Jeffrey H. Giansiracusa 
June 6, 2018  Colloquium of the mathematics institute, TU Kaiserslautern, Germany  Wolfram Decker 
1216 Feb. 2018  Invited talk at the workshop Ktheory, A1 homotopy and quadratic forms at Mathematics Institute, University of Warwick, UK  Marco Schlichting 
23 January 2018  Invited talk at the Séminaire AlgèbreGéométrie of Laboratoire de Mathématiques de Versailles, France  Dimitri Zvonkine 
89 December 2017  Talk at the international conference on group and representation theory "Nikolaus conference 2017" of Lehrstuhl D für Mathematik at RWTH Aachen  Frank Lübeck 
1923 June 2017  Invited talk at the 8th Atelier PARI/GP at Laboratoire de mathématiques Blaise Pascal, ClermontFerrand, France.  Bill Allombert 
216 June 2017  Invited participation at the LMFDB workshop Classical, Hilbert and Bianchi Modular Forms, their Lfunctions and Galois representations at Mathematics Institute, University of Warwick, UK.  John Cremona 
May 11th, 2017  Seminar talk in the Mathematische Gesellschaft of the Mathematisches Institut der Universität Göttingen  Claudia Schoemann 
April 11th, 2017  Seminar talk at the Institut de Recherche Mathématique Avancée (IRMA) Strasbourg, on "Cohomology of arithmetic groups and the Quillen conjecture"  HansWerner Henn, Gael Collinet 
30 Oct  5 Nov 2016  Talk at the workshop Computations in the Cohomology of Arithmetic Groups at Mathematisches Forschungsinstitut Oberwolfach (MFO)  Eva BayerFluckiger, Philippe ElbazVincent, Graham Ellis 
June 68, 2016  Talk at the joint Conference of the Belgian, Royal Spanish and Luxembourg Mathematical Societies, in Logroño, La Rioja  Gabor Wiese 
October 19, 2015  Talk at Universitaet Giessen, Germany : Ruan's cohomological crepant resolution conjecture Universitaet Giessen  Ralf Köhl 
Sept. 28 to October 2, 2015  Talk at the conference of the DFG priority project SPP 1489, Algorithmic & Experimental Methods in Algebra, Geometry and Number Theory, at Universitaet Osnabrueck, Germany  Winfried Bruns 
Aug. 31Sept. 3, 2015  Talk at the conference "Finiteness Conditions in Topology and Algebra", at Queen's University Belfast (UK)
 Thomas Hüttemann 
July 29th, 2015  Seminar talk at IST Austria (Institute of Science and Technology), Software for hyperbolic geometry and applications to isometry groups
 Herbert Edelsbrunner 
July 15, '15  Seminar Gruppen, Geometrie, Dynamik of Universitaet Giessen  Ralf Koehl 
June 15th to 20th, 2015  Talk at the conference DyToComp 2015  Dynamics, Topology and Computations, Mathematical Research and Conference Center in Bedlewo, Poland, A software for computations on the Dynamics and Topology of the Bianchi groups  Piotr Zgliczyński 
April 29th, 2015  Algebra Seminar, University of Glasgow, From a question of Serre to the QuillenWendt conjecture  Luigi Vergori 
April 2nd, 2015  Seminar of the research group Arithmétique et Théorie de l'Information (ATI),Luminy, Méthodes cohomologiques pour les formes modulaires de Bianchi  David Kohel 
March 20th, 2015  Pure Mathematics Colloquium of the University of Southampton, Bredon homology calculation techniques  Ruben SanchezGarcia 
January 12 to 16, 2015  Atelier PARI/GP 2015, Université de Bordeaux, Bianchi groups computation with PARI  Bill Allombert, Karim Belabas 
December 1 to 5, 2014  7th de Brun Workshop on Homological Perturbation Theory, From Homological Perturbation Theory to the QuillenWendt conjecture  Graham Ellis 
July 14 to 16, 2014  Workshop on Bianchi and Siegel modular forms, Sheffield, Bianchi modular forms of varying discriminant, level and weight  Tobias Berger 
July 10, 2014  Seminar on Euler Systems/Arithmetic Geometry, U. DuisburgEssen, The image of the BorelSerre bordification in algebraic Ktheory  Oliver Bräunling 
April 14, '14  Université de Neuchâtel, Un accès à l'homologie de Bredon  Alain Valette 
Dec. 20, 2013  Universitaet Giessen, Germany, Determination of torsion invariants of arithmetic groups Universitaet Giessen  Ralf Koehl 
July 19, 2013  Seminar of the Institute of Physics and Mathematics at Universidad Austral de Chile (UACh), Valdivia, Group Actions and Orbit Spaces  Rodrigo Vargas 
April 11, 2013  Séminaire Algèbre et topologie, IRMA Strasbourg, Calculs efficaces au dessus de la dimension cohomologique virtuelle  Christine Vespa 
December 20, 2012  Séminaire du laboratoire LSIIT Strasbourg, Homologie calculatoire de groupes modulaires  Pascal Schreck, Mohamed Tajine 
December 7, 2012  6th de Brún Workshop « Linear Algebra and Matrix Theory: connections, appl. and computations », A new technique to extract invariants of matrix groups
 Niall Madden, Rachel Quinlan 
July 1 to 6, 2012  Banff International Research Station for Mathematical Innovation and Discovery, Canada, talk at the workshop Torsion in the homology of arithmetic groups: geometry, arithmetic, and computation  Paul Gunnells 
June 4, 2012  Vrije Universiteit Amsterdam, The arithmetics of symmetric space  Rob de Jeu 
February 2012  University College Dublin, Torsion subcomplex reduction and conjugacy classes graphs  Kevin Hutchinson 
Feb. 2012  Univ. Freiburg, Reduktion von Torsionsunterkomplexen & Konjugiertenklassengraphen  Matthias Wendt 
Nov.. 2011  Technische Universität Darmstadt, Polyhedral models for arithmetic groups  Michael Joswig 
November 2011  Seminar on Representation Theory and Algebraic Geometry, W.I.S., Numbertheoretic formulae for the homological torsion of the Bianchi groups  Dmitry Gourevitch 
October 2011  Hebrew University of Jerusalem, Amitsur Algebra seminar, Stringy orbifolds  Alex Lubotzky 
July 2011  London Mathematical Society  EPSRC Durham Symposium Geometry and Arithmetic of Lattices, Durham (England), Implications of hyperbolic geometry to operator Ktheory of artihmetic groups  Mikhail Belolipetsky 
March 2011  GdT. Géométrie hyperbolique et surfaces de Riemann, Univ. Paris 7, Inst. Math. Jussieu, La torsion homologique de SL_2 d'anneaux d'entiers  Nicolas Bergeron 
February 2011  Séminaire Algèbre et topologie, IRMA Strasbourg, Modèles cellulaires pour des groupes arithmétiques  HansWerner Henn 
February 2011  Séminaire Théorie des Nombres de Bordeaux, La conjecture de Baum/Connes  un accès explicite  Guilhem Castagnos 
December 2010  Seminar on Representation Theory and Algebraic Geometry, W.I.S., (Co)homologies and Ktheory of Bianchi groups using comp...  Stephen Gelbart 
November 2009  National University of Ireland at Galway, The integral homology of PSL_2 of imaginary quadratic integers with nontrivial class group  Graham Ellis 
November 2009  Séminaire Algèbre et Géométries, Grenoble,Domaines fondamentaux pour groupes de matrices sur des entiers quadratiques imaginaires  Alessandro Chiodo 
October 2009  Conférence de l'Institut Fourier, Autrans, Homologie de groupes discrets d'isométries de l'espace hyperbolique  Michel Brion 
September 2009  17th ÖMG Congress and Annual DMV Meeting, Graz, Austria, The integral homology of PSL_2 of imag. quad. int. of class number two  Joachim Schwermer 
June 2009  Alg., Géom. Alg., Top. Alg., I3M Montpellier, Homologie à coefficients entiers de PSL_2 sur des anneaux d'entiers quadratiques imaginaires  Nicolas Ressayre 
June 2009  Research Seminar Comp. Algebra & Number Theory, Düsseldorf, The integral homology of PSL_2 of imaginary quadratic integers  Fritz Grunewald 
June 2009  Louise Nyssen  
November 2008  Autumn School about Geometric invariants of groups, Göttingen Homology of isometry groups of Hyperbolic Space  Andreas Thom 
June 2007  Summer School in Algebraic Topology, Univ. Lille, France Characteristic classes of complexified bundles  Sadok Kallel 
September 2006  Conference at the Banach Math. Center, Bedlewo, Poland, Characteristic classes of real generator bundles  Thomas Schick 
2006  Séminaire Gaston Darboux, I3M Montpellier, Variétés pseudoriemanniennes et réductions de fibrés principaux  Philippe ElbazVincent 
2006  Math. Institut, Universität Tübingen, The Lefschetz hyperplane intersection theorem  Victor Batyrev 