Invited speakers:

Topic

In homological algebra and algebraic topology it is often natural to consider operations “up to homotopy”. However, treating homotopic maps as equal may have its own challenges, for instance concerning well-definedness and functoriality of various constructions. One natural attempt to remedy this is to explicitly record homotopies as part of the category. Iterating this idea (that is also recording homotopies between homotopies, and so on), one arrives at Stasheff’s definition of a stong homotopy structure (or A-infinity structure).

The aim of this summer school is two-fold: Firstly we will learn the definitions and basic properties of A-infinity structures. Then we will see where and how they can be useful for treating concrete problems.

Hike

Practical information

• Arrival date: Sunday 9 June
• Departure date: Friday 14 June or Saturday 15 June
• Registration fee: 195 NOK
• Price of stay at Sophus Lie Center (per person per day, meals included): double room 750 NOK, single room 825 NOK

Registration

Contact

Organizers

Sophus Lie summer schools in algebra committee

• Petter Andreas Bergh (NTNU Trondheim)
• Gunnar Fløystad (University of Bergen)
• Martin Gulbrandsen (University of Stavanger)
• Trygve Johnsen (University of Tromsø)
• Kristian Ranestad (University of Oslo)

2019 summer school scientific organizers

• Steffen Oppermann (NTNU Trondheim)
• Torkil Stai (NTNU Trondheim)

Sponsors

• Pure Mathematics in Norway
• University of Bergen (UiB)
• University of Oslo (UiO)
• The Arctic University of Norway (UiT)
• The Norwegian University of Science and Technology (NTNU)
• University of Stavanger (UiS)