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From Higher Invariants

The Transatlantic Transchromatic Homotopy Theory Conference II

Dates and Location

The conference will take place during the five days August 3-7, 2020 at the University of Regensburg. Here is the [schedule]. The conference will take place in Room H 31. Registration and coffee breaks will be held nearby.

Aims and Scope

Transchromatic phenomena appear in a variety of contexts. These include stable and unstable homotopy theory, higher category theory, topological field theories, and arithmetic geometry. The aim of the conference is to bring together people from all of these areas in order to understand the relationship between each others work and to further demystify the appearance of transchromatic patterns in such disparate areas.


Monday Tuesday Wednesday Thursday Friday
09:30-10:00 Coffee and registration Coffee Coffee Coffee Coffee
10:00 - 11:00 Invited speaker 1 Invited speaker 5 Invited speaker 8 Invited speaker 10 Invited speaker 12
11:00 - 11:30 Coffee Coffee Coffee Coffee Coffee
11:30 - 12:30 Invited speaker 2 Invited speaker 9 Contributed talks 3 and 4 Invited speaker 13
12:30 - 14:00 Lunch Lunch Lunch Lunch Lunch
14:00 - 15:00 Invited speaker 3 Contributed talks 1 and 2 Excursion Contributed talks 5 and 6
15:00 - 15:30 Coffee Coffee Coffee
15:30 - 16:30 Invited speaker 4 Invited speaker 7 Invited speaker 11
17:00 Informal evening session
19:00 Dinner at Alte Linde

Invited lectures

  • Agnes Beaudry (Colorado)
  • Mark Behrens (Notre Dame)
  • Dan Berwick-Evans (UIUC)
  • Irina Bobkova (Texas A&M)
  • Natalia Castellana (UAB Barcelona)
  • Paul Goerss (Northwestern)
  • John Greenlees (Warwick)
  • David Hansen (MPIM Bonn)
  • Hans-Werner Henn (Strasbourg)
  • Nick Kuhn (Virginia)
  • Jack Morava (JHU)
  • Vesna Stojanoska (UIUC)
  • Neil Strickland (Sheffield)
  • Georg Tamme (Regensburg)

Titles and Abstracts available [here].

Financial Support

Limited financial support for the conference and younger participants has been provided by the SFB 1085: Higher Invariants. Funding is also available through the NSF grant DMS-1955705 for early-career US based participants. The deadline for full consideration of funding applications has been extended until April 5th, 2020.


Please register here.

Practical Information

MAP: Points of Interest.

University Map.

PUBLIC TRANSIT: Local bus system and route map.

There are many useful buses typically, but the 6 will suffice for getting to and from the city center and the conference room.

One can also walk to the conference room from the 'Universitat' bus stop on campus, which is better served by the bus system. The 6, 11, C6, and C11 buses all travel between the HBF (central station) and the Universitat bus stop. The 6, 11, C6, and C11 towards campus can all be caught here and one of them stops at this stop about every 5 minutes during working hours.

You can pay for a bus ride on entering the bus or purchase a strip of tickets from one of the ticket machines. A strip of tickets costs 9.00 euros and it allows five bus rides.


Regensburg is a tourist destination and we encourage guests to book their rooms as early as possible. Here is a list of hotels in the area:

1. Hotel Kaiserhof am Dom (In the city center, must take a bus to the University.)

2. Hotel Muenchner Hof (In the city center, must take a bus to the University.)

3. Hotel Apollo (Near the conference, but limited eating options.)

4. Hotel Jakob (In the center, must take a bus to the University.)

5. Hotel Central (In the city center, must take a bus to the University.)

One can also check the standard alternatives:

1. Hotels.com

2. Airbnb

TRAVEL: One can reach the university by following the instructions here.

INTERNET: Access to eduroam is available throughout the mathematics building. For those without eduroam access we will obtain a temporary guest account through the university.