Claus Michael Ringel
Lectures
2012
2011
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Bonn: Jan-April 2011.
Winterschool 10.-14.Jan 2011
The indecomposable representations of a finite quiver
(3 lectures)
Workshop March 28 - April 1.
- OW: 20.-26.02.2011.
Representation Theory of Quivers and Finite Dimensional Algebras
Lecture: Some Auslander-Reiten quilts
Abstract
- Darstellungstheorie Schwerpunkttagung 2011
In 10 minutes:
What is a hereditary algebra?
(Ext^2 and the
vanishing of Ext^2).
- Trondheim, May 11-18, 2011.
Lecture: Cluster-additive functions on stable translation quivers,
12.05.2011
-
Abel Symposium: Algebras, Quivers, and Representations
June 20-23, 2011, Sognerfjord.
Lecture: Tensor Products of Path Algebras
See part II of
On the representation dimension of an artin algebra
-
MARTa, Herford, 15.09.2011:
Buckminster Fuller. Mathematische Grundlagen:
Kugeln und Polyeder,
im Rahmen eines Workshops:
Raumforschen im RB Fuller-Satelliten von
Silke Riechert
- Banff:
25.-30.9.2011
Almost periodic order: spectral, dynamical, and stochastic approaches
Lecture: Fibonacci numbers and representations of quivers
Abstract
Video: Part 1,
Part 2.
- China: October - November 2011
- Shanghai Conference (SJTU) October 2 - 6, 2011
Lecture: Fibonacci numbers and representations of quivers
Slides
- SJTU
lectures: October, November 2011.
- Nanjing University, October 29, 2011: Modules determined by morphisms.
- East China Normal University, November 12-13, 2011:
Representations of a quiver over the ring of dual numbers.
- SJTU, November 17, 2011:
The Gorenstein-projective modules for some special biserial algebras
- Nanjing Normal University, November 25, 2011:
Some examples of Gorenstein-projective modules
Fully documented Lectures
- The Birkhoff problem:
How to classify subgroups of finite abelian groups?
Lecture Oxford, 28.02.2003 (Hilary Term Colloqium).
-
Algebra or Algebras
Are there many kinds of algebras?
Trondheim Lecture, May 27, 2004.
- The Hall multiplication.
Oxford Lecture, March 3, 2006.
In honour of the 80th birthday of Sandy Green
-
Algebra ist Geometrie ist Algebra.
Paderborn, 10.11.2006,
Conference in Homour of Helmut Lenzing.
-
Tilting Theory: The Art of Losing Modules.
Padua, March 16, 2007.
(Celebrating the 20th Anniversary of the Department of Pure
and Applied Mathematics).
- The relevance and the ubiquity of Prüfer modules
Presentation
(Torun, August 2007)
-
Hiroyuki Tachikawa and the development of the representation
theory of finite dimensional algebras
(Tokyo, Sept. 2007)
- Some minimal representation-infinite semigroups
Presentation
(St.Petersburg, Sept.2007)
- Invariant Subspaces
of Nilpotent Linear Operators
Berlin Mathematical School, 23. November 2007
- Root systems and canonical algebras
Newton-Institute, Cambridge, 16.03.2009
Flash Video
-
Why are canonical algebras canonical?
Paderborn, Feb 12, 2009, Shanghai, Oct 1, 2009.
- Nakayama algebras of Loewy length 3
Paderborn, May 30, 2009.
Shanghai-Version (Oct 6, 2009)
Workshop: Triangulated Categories and Singularities (May 26 - 30, 2009)
- The representation theory of cluster-concealed algebras
Leicester
Workshop on Derived Categories in Algebra, Topology and Geometry (17th to 19th September 2009)
Video recordings
- Diskrete ebene Bewegungsgruppen
Vorlesung am Informationstag 30.01.03, für Schülerinnen
und Schüler der 12. und 13. Jahrgangsstufe.
(Hier als Auszug die Liste der
Materialien)
-
Naturwissenschaftliche Kenntnisse? "... zur Bildung gehören sie nicht!"
Zur Einweihung des Biotech-Labors am Engelbert-Kaempfer-Gymnasium in Lemgo, 23. Oktober 2006.
Text
-
Zum Mathematiker werden - in nur 20 Minuten!
Eröffnung der Ausstellung Mathematik zum Anfassen,
Salzuflen 27.08.2006, 14:00.
-
Spiegelungen
Festvortrag zur Emeritierung von Hartmut Spiegel
Paderborn, 30.05.2009,
Zwei Euklid-Dateien:
abstand.geo,
insel.geo
-
Was besagt schon ein einzelner Zahlenwert?
Zur Bedeutung des funktionalen Denkens.
Paderborn, 10.09.2009.
-
The role of the natural numbers and the real numbers in
Whitehead's cosmology.
(On Kronecker's dictum:
"God made the natural numbers; all else is the work of man.")
Salzburg, 04.07.2006.
Further List
China 2010
2009
2008
- Oberwolfach.
An introduction to the representation dimension of artin algebras
Extended abstract
- Shanghai: Jiao Tong University, East China Normal University.
The representation dimension of an artin algebra.
2007
- Shanghai: Jiao Tong University: Pruefer modules
Nanjing: Tilting modules and tilted algebras
Nanjing Normal University: The Gabriel-Roiter measure and the
first Brauer-Thrall conjecture
2006
- 23.-28.01.06 Trieste: ICTP. Conference "Representation Theory"
The Bo Chen theorem and Hall polynomials.
- 02.-06.02.06 Münster. Conference: "Noncommutative algebras-"
Tilted algebras and cluster tilted algebras. (05.02.)
- 05.-31.03.06 Mar del Plata:
Degenerations of modules and the construction of generic modules.
Bahia Blanca (Agentina):
Foundation of the representation theory of artin algebras.
- 07.-13.05.06 Oberwolfach. "Interactions between Algebraic Geometry
and Noncommutative Algebra".
Degenerations of modules and the construction of Prüfer modules
Extended abstract
- 09.06.2006 Münster: 5. Symposion of the SFB
The Brauer-Thrall conjectures
- June 15-20 Antwerp
- September 06: Morningside Center, Beijing.
- September 06: Bonn. DMV-Tagung. Special session.
- 20.-24.11.06 Luminy: Hall algebras
2005
- March 11, 2005. Jiao-Tong-University, Shanghai:
Subgroups of finite abelian groups.
- March 16, 20, 23: Vortragsreihe. CMS,
Zhejiang University, Hangzhou:
Foundation of the representation theory of artin algebras.
- March 24: USTC-SIS Shanghai.
The representation dimension of an artin algebra
- March 25: ECNU, Shanghai.
Gabriel-Roiter measure (for representation finite algebras)
- May: BNU + Chinese-German Center
- August: Qinghua
- November: International University Bremen
- November: Kopenhagen
- Bielefeld, Seminar: Rhombal algebras
2004
- February 17, 2004. Mittag-Leffler-Institut Stockholm
Subgroups of finite abelian groups.
- March 15, 2004, Algebra and Geometry Seminar, Uppsala
Subgroups of finite abelian groups.
- March 18, 2004. Mittag-Leffler-Institut Stockholm
The Gabriel-Roiter measure.
- May 28, 2004, Trondheim
- June 23-26 Conference: Representation Theory and Applications. Uppsala
The Gabriel-Roiter measure.
- August 11-20, ICRA XI, Mexico.
The Gabriel-Roiter measure.
- Sherbrooke: Math-Club
- Sherbrooke
Subgroups of finite abelian groups/a>
- Boston: Kolloquium
The Birkhoff problem: How to classify subgroups of finite abelian groups?
- Boston:
Auslander and the The Brauer-Thrall conjectures
- November 26-28: Uppsala,
Tame and Wild, for Drozd.
- Puzzle-Vortrag:
Geraden - Staebe - Puzzles
(Staebe: Geraden-Konfigurationen im Raum)
2003
- July 14 - 18, 2003, Lisboa, Portugal
International Conference on Algebras, Modules and Rings
Basic properties of the module category of an artin algebra.
- July 20 - 25, 2003, Cocoyoc, Mexico.
XV Coloquio Latinoamericano de Algebra
Bautista and the development of modern representation theory of
artin algebras
And: The shape of the module category of an artin algebra.
- Japan: October 5-13
Foundation of the representation theory of finite dimensional
algebras.
- Kolloquium Darmstadt (60. Geburtstag Christian Herrmann)
Ringel
Last modified: Sun Mar 27 18:43:27 CEST 2005