CRC 1785
Generalised Motivic Methods in Geometry
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We are happy to announce the new Collaborative Research Centre "Generalised Motivic Methods in Geometry" (CRC 1785, funded by the DFG) at the University of Regensburg, in collaboration with colleagues from the University of Augsburg, TU Munich, and JGU Mainz.
The idea of this CRC is to promote and further develop motivic thinking in a wide variety of geometric contexts, such as algebraic/arithmetic geometry, topology, and Riemannian geometry.
This CRC offers a workshop and guest programme and a number of PhD and postdoc positions.
We therefore welcome applications to PhD and postdoc positions! (see below) We especially encourage women and members of underrepresented groups to apply.
People
Principal investigators
- Bernd Ammann (Regensburg)
- Ulrich Bunke (Regensburg)
- Kai Cieliebak (Augsburg)
- Denis-Charles Cisinski (Regensburg)
- Stefan Friedl (Regensburg)
- Walter Gubler (Regensburg)
- Bernhard Hanke (Augsburg)
- Marc Hoyois (Regensburg)
- Moritz Kerz (Regensburg)
- Guido Kings (Regensburg)
- Klaus Künnemann (Regensburg)
- Markus Land (Mainz)
- Clara Löh (Regensburg)
- Lyne Moser (Regensburg)
- Claudia Scheimbauer (TUM)
- Wolfgang Steimle (Augsburg)
- Florian Strunk (Regensburg)
- Tashi Walde (Regensburg)
- Paul Ziegler (Regensburg/Heisenberg)
Management committee
- Clara Löh (speaker)
- Bernd Ammann (cospeaker)
- Marc Hoyois (cospeaker)
- Klaus Künnemann (speaker integrated RTG)
- Further representatives will be elected in summer 2026.
Contact
- sfb-1785@uni-regensburg.de
- +49 (0)941 943-5871
Research
Research projects
-
A 1:
Motivic homotopy theory without A^1-invariance
(Cisinski, Hoyois, Strunk) -
A 2:
Non-commutative homotopy theory
(Bunke, Land) -
A 3:
Spectral theory for Dirac operators
(Ammann, Bunke, Hanke) -
A 4:
Synthetic category theory
(Cisinski, Löh, Moser, Walde) -
A 5:
Nested E_n-actions and factorization algebras
(Moser, Scheimbauer, Walde) -
A 6:
Pure local systems over p-adic local fields
(Kerz, Ziegler) -
A 7:
Independence of l
(Cisinski, Hoyois) -
A 8:
An adelic theory of heights
(Gubler, Künnemann) -
A 9:
Torsion and dynamics
(Friedl, Gubler, Löh) -
A 10:
Stable norms and geometry
(Ammann, Friedl, Löh) -
A 11:
Equivariant motivic cohomology and CM abelian varieties
(Kings) -
A 12:
Motivic aspects of hermitian K-theory
(Hoyois, Land, Steimle) -
A 13:
Cobordism categories and surgery
(Land, Steimle) -
A 14:
Beyond scalar curvature
(Ammann, Hanke) -
A 15:
Rabinowitz Floer homology and Tate-like structures
(Cieliebak)
Means and Opportunities
Open positions
We welcome applications to PhD and postdoc positions for the first funding period (10/2026--06/2030)! We especially encourage women and members of underrepresented groups to apply.What we offer
- A lively international research environment with joint CRC activities and specialised courses/research seminars in the topics of the CRC
- Funding for travel, guests, workshops
- Key skill courses
- The opportunity to gain teaching experience (in English or German)
What we expect
- A solid background in at least one of the areas essential for the CRC, e.g., higher category theory, algebraic/arithmetic geometry, homotopy theory, geometric topology, measured group theory, Riemannian geometry, Lorentzian geometry, symplectic geometry.
- Interest in collaborating with other members and other fields within the CRC.
- No German language proficiency is required.
PhD positions
- PhD positions: 75% E13 positions (duration: three years; starting date 10/2026 or a few months later), without teaching obligation
-
Required documents:
- cover letter, briefly summarising your mathematical interests and with whom/in which project you would like to work
- academic cv
- list of publications
- MSc thesis (or similar) if already available (otherwise a description of the MSc thesis project)
- university diplomas/certificates and transcripts of records (BSc/MSc, as far as available)
- contact details for two academic references; no reference letters are required at this stage.
- Please submit your application by email as a single pdf file to sfb-1785-applications@uni-regensburg.de
-
Application deadline: June 19, 2026
(later applications may also be considered until all positions are filled)
Postdoc positions
- Postdoc positions: 100% E13 positions (flexible duration; one year up to the full funding period, ending in 06/2030; starting date: 10/2026 or a few months later), without teaching obligation
-
Required documents:
- cover letter, briefly summarising your mathematical interests and with whom/in which project you would like to work
- academic cv
- list of publications
- research statement
- PhD certificate (if already available; otherwise: expected date of completion)
- contact details for two academic references; no reference letters are required at this stage.
- Please submit your application by email as a single pdf file to sfb-1785-applications@uni-regensburg.de
-
Application deadline: June 19, 2026
(later applications may also be considered until all positions are filled)
Further questions?
- mathematical/project-related questions: please contact the PIs of the corresponding projects directly
- questions about the CRC: Clara Löh (clara.loeh@mathematik.uni-r.de)
- administrative questions concerning the application: sfb-1785@uni-regensburg.de
