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Department of Mathematics Seminars and Talks

 
Seminar

Geometric Structures Laboratory

Talk Information
Title
Derived categories of generalized complex tori and T-duality
Start date and time
14:00 on Wednesday October 14, 2026
Duration in minutes
90 (until 15:30 on Wednesday October 14, 2026)
Room
FI309, Fields Institute, 222 College St.
Streaming password
288369
External video link
Abstract

To any translational invariant generalized complex structure J on a torus T^{2n} we associate a generalized derived category D(J) in terms of deforming the derived category of certain complex structures. This involves the choice of a complex structure, bivector and B-field. Our main result is that the category D(J) is, up to A_\infty quasi-equivalence, independent of the choices involved. We prove that D(J) is also left invariant under the action of T-duality. In particular, the definition is consistent with the homological mirror symmetry conjecture, so that e.g. D(J_\omega) = DFuk(\omega) if mirror symmetry for \omega is known. If time permits, we discuss examples of generalized branes. The talk is based on joint work with Jonathan Block, Vicente Cortés, Julian Holstein, Markus Röser and Aldo Witte.

Note

The talk will be about 50 minutes and the remaining time is meant for questions/discussion.

Speaker Information
Full Name
Patrick Antweiler
Institution
University of Hamburg
Institution URL