30/10/2020, 14:00 - 15:00 in online
Barnes, David (Queen’s University Belfast)
This event will take place online. Please contact the colloquium organiser (Florian Pausinger) if you wish to attend.
Sheaves sit in an interface of algebra and topology. I will introduce the concept and show how sheaves give us a notion of local data and global data. The first aim is to justify the slogan sheaves coherently index data by open sets of a topological space. The second aim is to introduce sheaves with group actions giving some indications of current and future research.