Selected communications of Alexander D. Rahm (international conferences in boldface)
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| Invited by |
September 28, 2023 | Talk at the conference ComPer23, Purdue University, Indiana “New tools for studying the topology of bacterial protein interaction networks”
| Tao Hou |
September 21, 2023 | Talk at the 4th Workshop on Topological Methods in Data Analysis, Universität Heidelberg: “Persistent Maximum of Loops in Bacterial Protein Interaction Networks”
| Freya Jensen |
July 12, 2023 | Invited talk at University of Luxembourg: Torsion in the cohomology of special linear groups over the natural integers
| Gabor Wiese |
June, 27- June 30, 2022 | Talk at the Workshop on Cohomology, Geometry and Explicit Number Theory (preceded by a a summer school), Institut Fourier Grenoble: “Verification of the Quillen conjecture in the rank 2 imaginary quadratic case” | The Cohomology, Geometry and Explicit number theory (COGENT) consortium |
October 3-8, 2021
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Talk at the Banff International Research Station workshop Lattices and Cohomology of Arithmetic Groups: Geometric and Computational Viewpoints: “On Farrell-Tate cohomology of GL(3) over rings of quadratic integers”
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Paul Gunnells, Philippe Elbaz-Vincent, Graham Ellis |
June 5, 2019 | Invited talk in the Wuppertal Topology Seminar. “Computing the 2-torsion in the cohomology of PSL(4,Z)” | Matthias Wendt |
May 17, 2019 | Talk at the Computeralgebra-Tagung 2019 in Kassel, Germany. “Computer Algebra implementations and applications to cohomology of groups, equivariant K-homology, Chen-Ruan orbifold cohomology”
| Wolfram Koepf |
25-29 March, 2019 | Invited talk at the conference Cohomology of Arithmetic Groups, Lattices and Number Theory: Geometric and Computational Viewpoint at Centre International de Rencontres Mathématiques (CIRM), Luminy, France. | Bayer, Elbaz-Vincent, Ellis, Gunnells |
October 17, 2018 | Invited talk in the Oberseminar Geometrie, University of Fribourg (Swiss Confederation): Hyperbolic orbifolds and their twisted sectors
| Ruth Kellerhals |
17-21 Sep. 2018 | GAP days, University of Siegen, Germany, talk “The Rigid Facets Subdivision Algorithm in GAP”.
| Mohamed Barakat, Max Horn |
11-14 Sep. 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 |
12-16 Feb. 2018 | Invited talk at the workshop K-theory, A1 homotopy and quadratic forms at Mathematics Institute, University of Warwick, UK
| Marco Schlichting |
23 Jan. 2018 | Invited talk at the Séminaire Algèbre-Géométrie of Laboratoire de Mathématiques de Versailles, France | Dimitri Zvonkine |
8-9 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 |
19-23 June 2017 | Invited talk at the 8th Atelier PARI/GP at Laboratoire de mathématiques Blaise Pascal, Clermont-Ferrand, France. | Bill Allombert |
2-16 June 2017 | Invited participation at the LMFDB workshop Classical, Hilbert and Bianchi Modular Forms, their L-functions 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"
| Hans-Werner 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 Bayer-Fluckiger, Philippe Elbaz-Vincent, Graham Ellis |
June 6-8, 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. 31-Sept. 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 Quillen-Wendt 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 Sanchez-Garcia |
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 Quillen-Wendt 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. Duisburg-Essen, The image of the Borel-Serre bordification in algebraic K-theory
| Oliver Bräunling |
Apr.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 |
Dec. 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 |
Jun.4, ‘12 | 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., Number-theoretic formulae for the homological torsion of the Bianchi groups
| Dmitry Gourevitch |
Oct. 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 K-theory 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
| Hans-Werner 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 K-theory of Bianchi groups using computational models
| Stephen Gelbart |
November 2009 | National University of Ireland at Galway, The integral homology of PSL_2 of imaginary quadratic integers with non-trivial 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 Young Topologists and New Topology 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 Elbaz-Vincent |
2006 | Math. Institut, Universität Tübingen, The Lefschetz hyperplane intersection theorem | Victor Batyrev |