Seminar: Noncrossing Partitions

Wednesday, 20 July and Friday, 22 July 2011

Joint seminar of the Bielefeld Research Group on Probability Theory and Mathematical Statistics and the Bielefeld Representation Theory Group


Programme:

Wednesday, 20 July 2011

14:15-15:15Claudia KöhlerThe connection between braid group actions on exceptional sequences,
thick subcategories, and noncrossing partitions
15:30-16:30Tobias JakobiCrossings in q-Deformed Probability Theory
17:00-18:00Dirk KussinTransitivity of the braid group action for Coxeter groups (after Igusa-Schiffler)

Friday, 22 July 2011

13:15-14:15Holger KöstersRandom Matrices and their Connection to Free Probability Theory
14:30-15:30Philipp LampeThe simple transitivity of the braid group action and noncrossing loops (after Bessis)
16:00-17:00Friedrich GötzeAnalytic Definition of Free Addition and Multiplication, and Applications

Wednesday the seminar takes place in V3-201. Friday we meet in V2-216.


References

  • M. Aguiar, Infinitesimal Hopf Algebras, Contemporary Mathematics 267(2000), 1-30.
  • M. Aguiar, Infinitesimal Bi-Algebras, in "Hopf Algebras", Lecture Notes in Pure & Applied Mathematics, vol. 237 (2004), 1-33.
  • D. Armstrong, Generalized noncrossing partitions and combinatorics of Coxeter groups, Mem. Amer. Math. Soc. 202 (2009), no. 949, x+159 pp.
  • C. A. Athanasiadis and V. Reiner, Noncrossing partitions for the group Dn. SIAM J. Discrete Math., 18(2):397-417 (electronic), 2004.
  • D. Bessis, A dual braid monoid for the free group. J. Algebra 302 (2006), no. 1, 55-69.
  • F. Hiai, D. Petz: The semicircle law, free random variables and entropy. American Mathematical Society, 2000.
  • K. Igusa and R. Schiffler, Exceptional sequences and clusters, J. Algebra 323 (2010), no. 8, 2183--2202.
  • C. Ingalls and H. Thomas, Noncrossing partitions and representations of quivers, Compos. Math. 145 (2009), no.6, 1533--1562.
  • C. Koehler, Thick subcategories of finite algebraic triangulated categories, arXiv:1010.0146v1 [math.CT].
  • H. Krause, Report on locally finite triangulated categories, arXiv:1101.3233v1 [math.RT]
  • G. Kreweras, Sur les partitions non croisees d'un cycle. Discrete Math., 1(4):333-350, 1972.
  • A. Nica; R. Speicher: Lectures on the Combinatorics of Free Probability. Cambridge University Press, 2006.
  • V. Reiner, Non-crossing partitions for classical reflection groups. Discrete Math., 177(1-3):195-222, 1997.
  • D. V. Voiculescu, K. J. Dykema, A. Nica: Free Random Variables. American Mathematical Society, 1992.