Talks and presentations
Seminar talks
El problema de isomorfismo modular
Seminario García-Rodeja, Universidade de Santiago de Compostela, Santiago de Compostela, Spain, November 16th, 2023
Modular Isomorphism Problem - progress, solution and open challenges
Séminaires liés à la théorie des groupes à l’UCLouvain, UC Louvain, Louvain-la-Neuve, Belgium, November 14th, 2023
The nilpotent decomposition in integral group rings
Seminario di Algebra, Università degli Studi di Trento, Trento, Italy, June 15th, 2023
Units in group rings and representation theory of groups of prime order
Seminario di Algebra, Università degli Studi di Firenze, Florence, Italy, June 13th, 2023
Units in group rings and representation theory of groups of prime order
Group Theory Seminar, ICMAT, Madrid, Spain, February 7th, 2023
Units in group rings and representation theory of cyclic groups of prime order
Algebra Seminar, University of Manchester, Manchester, UK, November 29th, 2022
On the Modular Isomorphism Problem
London Algebra Colloquium (Online), March 24th, 2022
A counterexample to the Modular Isomorphism Problem
Algebra Seminar, Leibniz Universität Hannover, Hanover, Germany, December 6th, 2021
A counterexample to the Modular Isomorphism Problem
Group Theory Seminar, ICMAT, Madrid, Spain, September 9th, 2021
On the Modular Isomorphism Problem,
Algebra Seminar, Univeristy of Lincoln, Lincoln, UK, May 26th 2021 (online seminar)
A counterexample to the first Zassenhaus conjecture,
Institute Webinar, IISER Mohali, Chandigarh, India, April 19th 2021 (online seminar)
Older talks
On the Modular Isomorphism Problem,
Algebra Seminar, Euskal Herriko Unibertsitatea, Bilbao, Spain, February 3rd 2021 (online seminar)
On the Modular Isomorphism Problem,
Seminar on Nonlinear Algebra, Max Planck Institut für Mathematik in den Naturwissenschaften, Leipzig, Germany, August 25th 2020
Abelianization of the unit group of an integral gorup ring,
Algebra Seminar, Vrije Universiteit Brussel, Brussels, Belgium, April 21st 2020 (online seminar)
Orders of units in group rings and blocks of defect 1,
Seminario di Algebra, Università degli Studi di Firenze, Florence, Italy, November 20th 2019
Blocks of defect 1 and units in integral group rings,
Algebra Seminar, Bar Ilan University, Ramat Gan, Israel, September 26th 2019
Blocks of defect 1 and units in integral group rings,
AG Algebra, Geometrie und Computeralgebra, Technische Universität Kaiserslautern, Kaiserslautern, Germany, July 11th 2019
A counterexample to the (first) Zassenhaus conjecture,
Actions!, Université de Lyon, Lyon, France, April 30th 2019
Orders of units in group rings,
Algebra Seminar, Universität Bielefeld, Bielefeld, Germany, April 17th 2019
A counterexample to the (first) Zassenhaus conjecture,
Algebra Seminar, Università di Padova, Padua, Italy, February 22nd 2019
A counterexample to the (first) Zassenhaus conjecture,
Oberseminar Algebra, Technische Universität Braunschweig, Braunschweig, Germany, January 22nd 2019
A counterexample to the first Zassenhaus conjecture,
Oberseminar Algebra, Universität Stuttgart, Stuttgart, Germany, December 18th 2018
A counterexample to the first Zassenhaus conjecture for units in integral group rings,
Fachbereichskolloquium Mathematik, Universität Stuttgart, Stuttgart, Germany, December 17th 2018
The group ring and its units,
Math Colloquim, Ort Braude College, Karmiel, Israel, November 6th 2018
Blocks, characters and torsion units in integral group rings,
Algebra and Number Theory Seminar, Technion, Haifa, Israel, November 4th 2018
A counterexample to the first Zassenhaus conjecture
Seminar des Lehrstuhls D, RWTH Aachen, Aachen, Germany, July 12th 2018
The Zassenhaus Conjecture,
ALGB Seminar, Vrije Universiteit Brussel, Brussels, Belgium, February 14th and 15th 2018
A counterexample to the first Zassenhaus conjecture,
Algebra Seminar University of Haifa, Haifa, Israel, December 14th 2017
The group ring and its units,
Colloquium Technion, Haifa, Israel, December 11th 2017
A counterexample to the first Zassenhaus conjecture,
Algebra Seminar Technion, Haifa, Israel, December 7th 2017
Torsion Units in Integral Group Rings and the Zassenhaus Conjecture,
Group Theory Seminar, Universidad Autónoma de Madrid-ICMAT, Madrid, Spain, October 4th, 2017
Zassenhaus Conjecture for small groups,
Algebra Seminar Universidad de Murcia, Murcia, Spain, October 20th 2016
Torsion units in Integral Group Rings,
Algebra Seminar Universitat de València, Valencia, Spain, September 16th 2016
Torsion units in Integral Group Rings,
Math Colloquium, Florida Atlantic University, Boca Raton, Florida, USA, September 2nd 2016
Torsion subgroups in the Unit Group of Integral Group Rings,
Oberseminar Algebra/Zahlentheorie, Universität Jena, Jena, Germany, Decemeber 1st 2015
The Zassenhaus Conjecture for Integral Group Rings,
Oberseminar Algebra, Universität Osnabrück, Osnabrück, Germany, November 10th 2015
Torsion Units in Integral Group Rings,
Oberseminar Gruppen und Geometrie, Universität Bielefeld, Bielefeld, Germany, October 21st 2015
Sylow Theorems for the Unit Group of the Integral Group Ring,
Algebra Seminar Universidad de Murcia, Murcia, Spain, January 22nd 2015
Rational Conjugacy of Torsion Units in Group Rings,
ALGB Seminar, Vrije Universiteit Brussel, Brussels, Belgium, December 10th 2014
Zassenhaus Conjecture and Prime Graph Question for Group Rings,
Oberseminar Algebra, Universität Stuttgart, Stuttgart, Germany, June 24th 2014
Rational conjugacy of torsion units in integral group rings of non-solvable groups
Oberseminar Algebra, Universität Stuttgart, Stuttgart, Germany, January 29th 2013
Small subgroups of units in the Integral Group Ring
Oberseminar Algebra, Universität Stuttgart, Stuttgart, Germany, May 18th 2012
Free subgroups in the Integral Group Ring and dihedral p-critical elements
Oberseminar Algebra, Universität Stuttgart, Stuttgart, Germany, July 7th 2011
Conference talks
Modular Isomorphism Problem - progress, solution and open challenges
Groups, Rings and the Yang Baxter Equation, Blankenberge, Belgium, June 19th - 23rd 2023
Modular Isomorphism Problem - progress, solution and open challenges
Groups in Galway, Galway, Ireland, May 18th - 19th 2023
Modular Isomorphism Problem - progress, solution and open challenges
Representations of Finite Groups, Oberwolfach, Germany, April 16th - 21st 2023
Modular Isomorphism Problem - progress, solution and open challenges
Structure of Group Algebras over Local Rings, Ambleside, UK, August 23rd - 30th 2022
A counterexample to the Modular Isomorphism Problem
Groups St Andrews 2022, Newcastle, UK, July 30th - August 7th 2022
The Modular Isomorphism Problem
Nikolauskonferenz 2021, Aachen, Germany, December 10th - 11th 2021
The unit group of a group ring. Prof Passi’s influence on my research
Memorial Webinar in honour of Prof I.B.S. Passi, October 26th 2021 (online)
Counterexamples to the MIP
The small group algebra
The MIP in Murcia, Murcia, Spain, September 6th - 8th, 2021
Older talks
The influence of the Luthar-Passi method on the study of units in group rings
Group Algebras, Representations and Computation, Bangalore, India, October 14th - 23rd 2019
Celebrating the 80th birthday of Prof. I.B.S. Passi
Blocks of defect 1 and units in integral group rings
Advances in Group Theory and Applications 2019, Lecce, Italy, June 25th - 28th 2019
Units in Group Rings and Blocks of Defect 1
Groups, Rings and Associated Structures, Spa, Belgium, June 9th - 15th 2019
Blocks, characters and units in group rings
Representations of Finite Groups, Oberwolfach, Germany, March 24th - 30th 2019
Blocks, characters and torsion units in integral group rings
Groups in Madrid 2018, Madrid, Spain, November 22nd - 23rd 2018
A counterexample to the first Zassenhaus Conjecture
Groups in Florence 2018, Florence, Italy, September 5th - 7th 2018
The Herzog-Schönheim Conjecture or: is commutativity overrated?
Groups & Algebras in Bicocca for Young algebraists, Milano, Italy, May 21st- 25th 2018
A counterexample to the first Zassenhaus Conjecture
2018 Zassenhaus Groups and Friends Conference, Tampa, Florida, USA, April 6th - 8th 2018
La conjetura de Zassenhaus para grupos pequeños
4º congreso de jóvenes invesigadores, València, Spain, September 4th - 8th 2017
On the Zassenhaus Conjecture for small groups
Groups St Andrews 2017, Birmingham, UK, August 5th - 13th 2017
On a result of Cliff and Weiss about a strategy to attack the Zassenhaus Conjecture
Groups, Rings and the Yang-Baxter equation, Spa, Belgium, June 18th - 24th 2017
Officially not celebrating Eric Jespers’ 62nd birthday
Zassenhaus Conjecture for small groups
Young Researchers Algebra Conference 2017, Naples, Italy, May 23rd - 24th 2017
Zassenhaus Conjecture for simple groups
Advances in Group Theory and Applications 2016 - The School, Vietri sul Mare, Italy, June 6th - 9th 2016
Subgroup Isomorphism Problem and Sylow theorems in integral group rings
Ischia Group Theory 2016, Ischia, Italy, March 29th - April 2nd 2016
Zassenhaus Conjecture and Prime Graph Question for Integral Group Rings
Special Session on Groups, Rings, Group Rings, and Hopf Algebras, Chicago, Illinois, USA, October 2nd - October 4th 2015
Celebrating the 75th birthday of Donald S. Passman
Torsion Units in Integral Group Rings
Jahrestagung DFG Schwerpunkt 1489, Osnabrück, Germany, September 28th - October 2nd 2015
Prime graph question for torsion units in group rings of 4-primary groups
Groups and their Actions, Bedlewo, Poland, June 22nd - 25th 2015
Torsionsuntergruppen in ganzzahligen Gruppenringen
Grüppchen 2015, Gießen, Germany, March 6th - 7th 2015
Representation Theory Applied to Torsion Units in Group Rings
Darstellungstheorietage 2014, Kaiserslautern, Germany, November 7th - 8th 2014
Torsion Units in the Integral Group Ring of $\operatorname{PSL}(2,p^f)$
DMV-PTM Joint Meeting 2014, Poznan, Poland, September 16th - 20st 2014
Prime Graph Question for 4-primary groups II
Groups, Rings and Group Rings, St. Catherines, Ontario, Canada, July 28th - August 1st 2014
Zassenhaus Conjecture for cyclic-by-abelian groups
Groups St Andrews 2013, St Andrews, Scotland, August 3rd - 11th 2013
Rational conjugacy of torsion units in integral group rings of non-solvable groups
Recent Trends in Rings and Algebras, Murcia, Spain, June 3rd - 7th 2013
On the first Zassenhaus Conjecture
Darstellungstheorietage 2012, Magdeburg, Germany, November 23rd - 24th 2012
Zassenhaus Conjecture for cyclic-by-abelian groups
Group Rings and related topics, Stuttgart, Germany, June 25th-29th 2012
Freie Untergruppen in $U(\mathbb{Z}G)$ und dieder-kritische Elemente
Studierendenkonferenz der DMV 2011, Cologne, Germany, September 20th - 21st 2011
Dihedral p-critical elements in finite simple groups
Groups, Rings and Group Rings, Edmonton, Alberta, Canada, July 11th - 15th 2011