Speaker:
David Ploog
- Freie Universität Berlin
Thursday, May 18, 2017
at
4:30 PM
Sala Riunioni II floor
The most simple kind of objects in a triangulated category are the exceptional objects. Next in complexity are objects with 2-dimensional graded endomorphism algebra; we call these "spherelike".
In the first part of the talk, I will motivate why spherelike objects are interesting, and show examples occurring in derived categories of algebras. In the second part, I will explain how spherelike objects can be collected in a new invariant of triangulated categories, the "spherelike poset". I will mention some concrete operations on quivers with relations for which we can track the growth of this poset. (Joint with Andreas Hochenegger, Milano, and Martin Kalk, Edinburgh.)
- Programme Director
-
David
Pauksztello
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External reference
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- Publication date
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April 28, 2017
