Organizer of Conferences
- Member of GAGTA Steering Commitee
- International Conference Geometric and Combinatorial Group Theory with Applications (GAGTA-6) ,
Heinrich-Heine-University Duesseldorf, 2012, July, 25 - August, 3.
- Minisymposium "Geometrische Gruppentheorie", DMV–annual conference 2011,
Universität Köln, 19.-22. September 2011
- Mitglied des Scientific Committees der internationalen Konferenz "Geometric and Asymptotic Group Theory with Applications"
(GAGTA-5), Manresa, Barcelona (Spanien), 11.-15. Juli 2011
(http://www.epsem.upc.edu/~gagta5)
- Minisymposium "Combinatorial and Geometric Group Theory", DMV–annual conference 2008,
University Erlangen, 14.-19. September 2008
(http://www.uni-erlangen.de/infocenter/meldungen/2008/nachrichten/september/287.shtml)
- International Conference Combinatorial and Geometric Groups Theory with Applications,
Technical University Dortmund, August 2007
- Coorganisator der Mal'cev-conference, Sobolev Institute of Mathematics, Siberian Branch
of the Russian Academy
of Sciences, Novosibirsk, 17.-19. November 1998 http://math.nsc.ru/conference/malmeet/index.htm
Invited Courses
- 9 invited lectures "Relatively hyperbolic and azylindrically groups" in "The International Workshop 'Algorithmic problems
in group theory and related areas'", Novosibirsk (Russia), July 23-August 4, 2018 (http://www.math.nsc.ru/conference/isc/)
- 10 invited lectures
for Ph.D students and professors at the Universitat Politecnica de Catalunya in Barcelona
(Grant of the Spanish Government: ‘Movilidad de profesores visitantes en masteres
oficiales’,
code MAS2008-00003-P, 2009).
“Automorphisms of free groups and train tracks” (5 lectures in April 2009)
“Hyperbolic groups” (5 lectures in June 2009).
Invited lectures, plenary and 1-hour talks on conferences from 2001 to nowadays
- Gliwice (Poland), September 9-13, 2019, Groups and their actions (http://mat.polsl.pl/groups/)
Plenary talk: "Equations in acylindrically hyperbolic groups. Algebraic, verbal, and existential
closedness
of subgroups of groups"
- Seoul (Korea), July 16-20, 2018, Geometric and Asymptotic Group Theory with Application (GAGTA 2018)
https://sites.google.com/view/gagta2018/home
Plenary talk: "Equations in acylindrically hyperbolic groups and verbal closedness"
- Regensburg (Germany), Sept. 25-29, 2017, Manifolds and Groups
http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/sfb_mag2017.pdf
- Novosibirsk (Russia), November 21-25, 2016, Mal’cev Meeting,
http://math.nsc.ru/conference/malmeet/16/Main_e.htm
Plenary talk: "From local to global conjugacy in relatively hyperbolic groups"
- New York (USA), June 13 -17, 2016, Geometric and Asymptotic Group Theory with Applications (GAGTA-10),
http://web.stevens.edu/algebraic/GAGTA2016/program.php
Plenary talk: "From local to global conjugacy in relatively hyperbolic groups"
- Bedlewo (Poland), June 22-26, 2015, International conference „Groups and their Actions“, http://mat.polsl.pl/groups/
Main Speaker
- Bonn (Germany) December 5, 2014, Geometric Group Theory in Bonn
Plenary talk: An algorithm for finding a basis of the fixed point subgroup of an automorphism of a free group
- Poznan (Poland), September 17 – 19, 2014, German Mathematical Society (DMV) and Polish Mathematical Society (PTM),
(http://ptm-dmv.wmi.amu.edu.pl/37session.htmll)
Talk: "Generalized presentations of groups, in particular of Aut(F )"
- Newcastle (QL, Australia), July 21 – 25, 2014, Geometric and Asymptotic Group Theory with Applications (GAGTA-8),
https://sites.google.com/site/gagta8/
Plenary talk: "Infinite words and generalized presentations of groups versus classical combinatorial group theory
- New York (USA), May 28 - 31, 2013, Geometric and asymptotic group theory with applications (GAGTA-7),
http://www.stevens.edu/algebraic/GAGTA/index.htm
Plenary talk: “An efficient algorithm for computing a basis of the fixed point
subgroup
of an automorphism of a free group”
- South Padre Island (USA), March 21 - 24, 2013, G3-Conference, http://www.math.uiuc.edu/_mineyev/ggg/
Plenary talk 1: “Introduction to train tracks”
Plenary talk 2: “An efficient algorithm for computing the fixed point subgroup of an
automorphism of a free group”
- Barcelona-Bellaterra (CRM) (Spain), 10th November, 2012
Workshop for the International Conference ‘Automorphisms of free groups’.
1-hour talk: “A basis of the fixed point subgroup of an automorphism of a free group”
- Düsseldorf (Germany) July 25 - August 3, 2012, International Conference“Geometric
and Combinatorial Group Theory with Applications (GAGTA-6)’.
Plenary talk: “A basis of the fixed point subgroup of an automorphism of a free group”
- Köln (Germany) September 19 - 22, 2011, Minisymposium ‘Geometric Group Theory’ in
frames of the DMV-Jahrestagung 2011.
1-hour talk: “Generalized presentations of infinite groups, in particular of Aut(F!)”
- Manresa (Barcelona, Spain), July 11 - 15, 2011,
International Conference ‘Geometric and Asymptotic Group Theory’
Plenary talk: “Some new residual properties of groups”
- Omsk (Russia), August 16 - 22, 2009,
International Workshop ‘New Algebra-Logical Methods in Solution for Systems of Equations
in Algebraic Structures’
http://omskconf2009.oscsbras.ru/eng.program.html
1-hour talk: “Conjugacy separability for subgroups of virtually free groups”
- Barcelona (Spain), April 24 - 25, 2009,
4th Barcelona Weekend in Group Theory.
Invited talk: “On endomorphisms of torsion-free hyperbolic groups”
- 10 invited lectures for Ph.D students and professors at the Universitat Politecnica
de Catalunya in Barcelona (Grant of the Spanish Government: ‘Movilidad de profesores
visitantes en masteres oficiales’, code MAS2008-00003-P, 2009).
“Automorphisms of free groups and train tracks” (5 lectures in April 2009)
“Hyperbolic groups” (5 lectures in June 2009).
- Alagna Valsesia (Italy), December 14 - 20, 2008,
‘Makanin-Razborov Workshop’
http://www.mas.ncl.ac.uk/_najd2/alagna/
1-hour talk: “On the fundamental and the first homology groups of the Hawaiian Earrings
and of Griffiths’ space”
- Düsseldorf (Germany), November 26 - 28, 2008,
Workshop ‘Algebra, Geometry, Arithmetic, Dynamics Related to the Solvable Radical and
Representations of Finite Groups’
http://www.math.uni-duesseldorf.de/_grunewald/Conf2008/nov2008.html
1-hour talk: “On the fundamental and the first homology groups of the Hawaiian Earrings
and of Griffiths’ space”
- Erlangen (Germany), September 14 - 19, 2008,
Minisymposium ‘Combinatorial and geometric group theory’ in frames of the DMV Jahrestagung 2008
1-hour talk: “A presentation of a subgroup of Fn x Fn with unsolvable membership problem”
1-hour talk: “On the fundamental and the first homology groups of the Hawaiian Earrings
and of Griffiths’ space”
- Manresa, Barcelona (Spain), August 31 - September 4, 2006,
International conference ‘Geometric and asymptotic group theory with applications’
http://www.epsem.upc.edu/_gagta/programen.shtml
Plenary talk: “On a Magnus property for some one-relator groups”
- Piestany (Slovak Republic), July 16 - 20, 2005,
Workshop ‘Equations in Groups and Applications of Algebraic Methods in Computer
Science and Cryptology’
1-hour talk: Some methods of detecting the hyperbolicity for one relator groups
- Novosibirsk (Russia), November 17 - 19, 2003,
Mal’cev Meeting 03,
http://math.nsc.ru/conference/malmeet/03/Main.htm
http://math.nsc.ru/conference/malmeet/03/Prog.rtf
Plenary talk: “On Dehn functions of groups”
- Novosibirsk (Russia), November 21 - 23, 2001,
Mal’cev Meeting 01,
http://math.nsc.ru/conference/malmeet/01/Prog win.htm
Plenary talk: On Magnus’ theorem for fundamental groups of compact surfaces
Invited lectures on research seminars
- Wroclaw (Poland) 2018
- Gliwice (Poland) 2017
- Vanderbilt University (Nashville/Tennessee) (USA), (Invited by Prof. Denis Osin, 2017)
- Stevens Institute of Technology (USA), Group Theory International Online-Seminar
(invited by Prof. Miasnikov, 2016)
- University of Bielefeld (Germany), (invited by Prof. Bux, 2016)
- Stevens Institute of Technology (USA), Group Theory International Online-Seminar
(invited by Prof. Miasnikov, 2014)
- Sydney (Australia)
(invited by Prof. Batanin, 2014)
- Melbourne (Australia)
(invited by Prof. Reeves, 2014)
- University of Illinois at Urbana Champaign (USA)
(invited by Prof. Mineyev, 2013)
- Stevens Institute of Technology (USA), Group Theory International Online-Seminar
(invited by Prof. Miasnikov, 2012)
- Bar-Ilan University (Israel) (invited by Prof. Tsaban, 2011)
- Kiel University (Germany) (invited by Prof. Weidmann, 2011)
Karlsruhe Institute of Technology (Germany) (invited by Prof. Rieder, 2010)
- Moscow MGU (Russia) (invited by Prof. Klyachko, 2010)
- Düsseldorf University (Germany) (2 times; invited by Prof. Grunewald, 2009)
- MPIM Bonn (3 times; invited by Prof. Moree und Prof. Ballmann, 2008, 2010)
- Newcastle (Great Britain) (invited by Prof. Duncan, 2007)
- Edinburgh (Great Britain) (invited by Prof. Howie, 2007)
- Barcelona (Spain) (2 times; invited by Prof. Ventura, 2005, 2007)
- Lausanne (Switzerland) (invited by Prof. Bartholdi, 2006)
- Toulouse (France) (invited by Prof. Boileau, 2004)
- Gdansk (Poland) (5 times; invited by Prof. Szepanski and Zastrow)
- Berlin (Germany) (2 times; invited by Prof. Pinkall, Pohst, and Brinkmann, 2005)
- Bielefeld (Germany) (2 times; invited by Prof. Helling)
- Frankfurt (Germany) (6 times; invited by Prof. Bieri, Burde und Metzler)
- Dortmund (Germany) (3 times; invited by Prof. Rosenberger)
- Bochum (Germany) (6 times; invited by Prof. Zieschang)
Sectional talks on conferences
- Tel Aviv, Bar Ilan University (Israel), Mai 26-30, 2019, Geometric and Asymptotic Group Theory with Application (GAGTA 2019)
(http://u.math.biu.ac.il/~vishne/Conferences/GAGTA2019/program.html)
Talk: Algebraically and verbally closed subgroups of groups: Equations in acylindrically hyperbolic groups
- Salzburg (Austria), September 11 – 15, 2017, 19th ÖMG Congress and Annual DMV Meeting,
Minisymposion M2 Fractals and Wild Topology
Talk: The automorphism group of the free group of infinite countable rank. A survey.
- Poznan (Poland), September 17 – 19, 2014, German Mathematical Society (DMV) and Polish Mathematical Society (PTM), (http://dmv.ptm.org.pl (http://dmv.ptm.org.pl/37session.html)
Talk: "Generalized presentations of groups, in particular of Aut(F )"
- Braunschweig (Germany), May 21 - 24, 2013,
Workshop ‘Questions, Algorithms, and Computations in Abstract Group Theory’,
http://www.icm.tu-bs.de/ag algebra/ws-qac/index.php
Talk: “An efficient algorithm for computing the fixed point subgroup of an automorphism of a free group”
- Braniewo (Poland), July 24 - 25, 2010, Weierstraß-Killing-Colloquium.
http://mat.ug.edu.pl/index.php?url=mod/article.php&id=356
Talk: “On generalized conjugacy separability in the class of virtually free groups”
- Novosibirsk (Russia), August 24 - 28, 2009,
Mal’tsev Meeting
Talk: “Conjugacy separability for subgroups of virtually free groups”
- Göttingen (Germany), November 17 - 21, 2008,
Summer School ‘Geometric invariants of groups’
http://www.uni-math.gwdg.de/www/archiv.html
Talk: “On the fundamental and the first homology groups of the Hawaiian Earrings
and of Griffiths’ space”
- Oberwolfach (Germany), June 22 - 28, 2008,
Workshop ‘Profinite and Asymptotic Group Theory’
http://www.mfo.de/programme/schedule/2008/
Talk: “The conjugacy problem for some extensions of groups and a presentation
of Mihailova’s subgroup”
- Bedlewo (Poland), July 1 - 7, 2007,
International conference ‘Groups and their actions’
http://mat.polsl.pl/groups/index-2.html
Talk: “Subgroups of small index in Aut(Fn) and Kazhdan’s property (T)”
- Marseille, CIRM (France), February 26 - March 2, 2007,
International conference ‘Groups 007’
http://www.latp.univ-mrs.fr/_coulbois/Groups007/index.html
Talk: “Subgroups of small index in Aut(Fn) and Kazhdan’s property (T)”
- Novosibirsk (Russia), November 15 - 17, 2005,
Maltsev Meeting 05.
http://www.math.nsc.ru/conference/malmeet/05/Main e.htm
http://www.math.nsc.ru/conference/malmeet/05/Main.htm
Talk: “On the generalized Whitehead problem for hyperbolic groups”
- Barcelona (Spain), June 28 - July 2, 2005,
Barcelona Conference on Geometric Group Theory.
Talk: “Endomorphisms of hyperbolic groups”
- Mainz (Germany), June 16 - 19, 2005,
2nd Joint Meeting of AMS, DMV, ÖMG
http://www.mathematik.uni-mainz.de/mainz2005/program/CP.pdf
Two talks:
1) “The conjugacy problem in free-by-hyperbolic groups”
2) “On the generalized Whitehead problem for hyperbolic groups”
- Bendlewo (Poland), April 18 - 24, 2004,
Conference on ‘Geometric group theory’
http://www.math.uni.wroc.pl/ggt/geom04
Talk: “Mean Dehn functions of groups”
- Sankt Petersburg (Russia), September 11 - 22, 2002,
International Algebraic Conference dedicated to the memory of Z.I. Borevich
http://www.umsolver.com/proceeding.htm
Talk: “An analogue of a theorem of Magnus for fundamental groups of surfaces”
- Sevilla (Spain), June 18-21, 2003
First Joint Meeting AMS/RSME
http://www-ma4.upc.edu/_burillo/sevilla.html
Talk: “An analogue of a Magnus’ theorem for surface groups and some other
one-relator groups”
- Ustron (Poland), June 10-14, 2003,
International conference ‘Groups and Group Rings’ http://mat.polsl.pl/groups/starekonf/a2.html
- Gaeta (Italy), June 1-6, 2003,
International Conference “Geometric, Combinatorial and Dynamical Aspects of Infinite Groups”
Earlier conferences with sectional talks
Cortona (Italy), 2002; Hattingen (Germany), 2001; Haifa (Israel), 2000; Warwick (England), 1999;
Southampton (England), 1997; Anogia, Crete (Greece), 1996; L’vov (Ukraine), 1987; Gomel (Belorussia), 1986
- Krasnoyarsk (Russia), August 23 - 28, 1993,
The IIIrd International Conference on Algebra
Plenary talk: “Finitely generated groups with the M. Hall property”
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