Workshop: Secondary and delocalized index invariants – University of Copenhagen

Workshop: Secondary and delocalized index invariants

11-15 June 2018. 
University of Copenhagen, Department of Mathematical Sciences

The focus of the meeting will be applications of the analytic surgery group to geometry and topology, and in particular on delocalized invariants such as relative eta invariants and their higher analogues.

Participants June 2018
Participants June 2018. Click for large photo.

Speakers include:

  • Vadim Alekseev (Technische Universität Dresden, TBC)
    Mapping (surgery to) analysis to homology
  • Paolo Antonini (SISSA Trieste)
    A Baum-Connes conjecture in real KK-theory
  • Sara Azzali (Universität Potsdam)
    The “free and proper part” of K-theory
  • Ulrich Bunke (Universität Regensburg)
    The index of Dirac operators in coarse homotopy theory
  • Sebastian Goette (Albert-Ludwigs-Universität Freiburg)
    Towards a geometric index formula for foliations
  • Alexander Gorokhovsky (University of Colorado, Boulder)
    Pairings for pseudodifferential symbols
  • Jens Kaad (University of Southern Denmark, Odense)
    Group cocycles on loop groups
  • Paolo Piazza (Universita' di Roma "La Sapienza")
    Singular structures, groupoids and metrics of positive scalar curvature
  • Indrava Roy (IMSC Chennai)
    Secondary l^2-invariants and the Higson-Roe sequence for etale groupoids
  • Anton Savin (RUDN University)
    On the index of elliptic problems in plane compound domains
  • Elmar Schrohe (Leibniz Universität Hannover)
    Index Theory for Operators Associated with Groups of Quantized Canonical Transformations
  • Georges Skandalis (Université Paris Diderot)
    Deformation groupoids and a Boutet de Monvel type calculus
  • Charlotte Wahl (Gottfried Wilhelm Leibniz Bibliothek)
    Higher rho-invariants for the signature operator: A survey and perspectives
  • Ziezhang Xie (Texas A&M)
    Delocalized eta invariants, algebraicity, and K-theory of group C*-algebras
  • Rudolf Zeidler (Universität Münster)
    On the range of the relative higher index and the higher rho-invariant for positive scalar curvature
  • Vito Zenobi (Université de Montpellier)
    Lie groupoids, coarse C*-algebras and long exact sequences

Gong show

The gong show was contributed to by:

  • Simone Cecchini (Göttingen)
  • Samuel Guerin (Lyon)
  • Manuel Krannich (Copenhagen)
  • Omar Mohsen (Paris)
  • Valerio Proietti (Copenhagen)
  • Mehran Seyedhosseini (Göttingen)
  • Mayuko Yamashita (Tokyo)


The lectures will be held at the Department of Mathematical Sciences at the University of Copenhagen. You can find information for short term visitors including directions to the mathematics department here.


Registration has closed. For questions, contact one of the organizers.


List of participants

Schedule and abstracts:

Schedule for the workshop

Abstracts for the talks


We recommend Hotel de 9 Små Hjem, which is pleasant and inexpensive and offers room with a kitchen. Other inexpensive alternatives are CabInn that has several locations in Copenhagen: the Hotel City (close to Tivoli), Hotel Scandivania (Frederiksberg, close to the lakes), and Hotel Express (Frederiksberg) are the most convenient locations; the latter two are 2.5-3 km from the math department.

Somewhat more expensive - and still recommended - options are Hotel Nora (15 min walk) and Ibsen's Hotel (25 min walk or 7 min busride). There are also many AirBnB offers close by!

Organizers: Robin Deeley, Magnus Goffeng, Ryszard Nest and Thomas Schick


The workshop is funded by Centre for Symmetry and Deformation, and Swedish Research Council Grant 2015-00137 and Marie Sklodowska Curie Actions, Cofund, Project INCA 600398