A Sprint on Local Systems
A Sprint on Local Systems
September 28 - October 2 , 2026
University of Wuppertal, Campus Grifflenberg
Organizers: Fei Ren, Hugo Zock
This workshop aims to bring together researchers in diverse flavors of local systems, as well as to provide a bridge for interested newcomers to jump on the topic.
Invited speakers:
Tomoyuki Abe (Tokyo),
Marco D'Addezio (Strasbourg),
Michael Groechenig (Toronto),
Thomas Krämer (Chemnitz).
This workshop will consist of a lecture part and a research part.
In the lecture part: Tomoyuki Abe will give a mini-course on characteristic cycles in the setting of ℓ-torsion local systems.
In the research part: Marco D'Addezio, Michael Groechenig and Thomas Krämer will be our research mentors. Each of them will provide a project program, to be accomplished before the workshop by some selected participants. We will accept either individual volunteers, as well as small groups of friends (2∼3 people) who are willing to work together on one subproject. Each program will be carried out in roughly 5 talks during the workshop week.
How the Research Part runs:
Each mentor will provide a project program, consisting of several independent subprojects to be worked out by selected participants (called the "mentees"). Then:
Project Release & Registration: The project programs and the registration form will be released together with the second announcement of the event in mid February.
Selection for Mentees: the selection process will start immediately after the second announcement and last till end February.
Active Research: The research of the mentees will start from March 1 under the guidance of their mentors and with more detailed project programs. The research is expected to be done before the workshop week: not necessarily in fully polished papers, but the main results should be clearly stated and the techniques should be cleanly explained.
Workshop Week: The workshop week will consist of talks by the mentors and the mentees presenting their new research result.
Proceeding: The mentees are supposed to finish their research paper within half a year after the workshop. These papers will be collected by the organizers into a workshop proceeding.
Who are eligible to be mentees?
Our goal is to bring together motivated minds, regardless of their academic age or prior specialization. What we value most is your intellectual energy, your endeavor, and your dedication. Whether local systems are already your primary research area or a fascinating topic that has recently captured your imagination through late-night reading, you are fully encouraged to join us.
How does the selection process work?
Along the registration form, you will be able to rank your interests in different subprojects provided by mentors. You are very encouraged to send us some write-ups that you believe can help us increase your chance: It can be your bachelor/master/PhD thesis, your research article(s), your reading notes, or even some parts of your CV on seminar participation. We will be interested not only if you already have some knowledge on the subprojects you choose, but also if you show enough maturity as a mathematician to jump across different fields.
Any questions? Drop an email here 👉 renfei@uni-wuppertal.de
Marco D'Addezio: Crystals and parabalocity conjecture. (Key words: crystal, p-divisible group, overconvergence, Tannakian category, abelian variety)
Subproject 1: Isocrystals over formal schemes
Subproject 2: Monodromy groups beyond constant slopes
Michael Groechenig: TBA
Thomas Krämer: TBA
To be announced
Mensa ME 02 / C@feteria ME 03
These two are the main food places on campus. Card payment only. Here is the daily menu.
Kneipe ME 04
It is also operated by the Uni, and usually the waiting time here is longer than the two above. They also serve alcohol and dinner. You can find their menu via the same link.
GRK 2240: Algebro-geometric Methods in Algebra, Arithmetic and Topology
Professor Kay Rülling's Kostenstelle