Siegel der Universität Augsburg

Universität Augsburg
Institut für Mathematik

Siegel der Universität Augsburg

 

Oberseminar zur Algebra und Zahlentheorie

 

Professor Dr. Anton Fonarev
Steklov Mathematical Institute, Moscow

 
spricht am
 
Donnerstag, 6. Februar 2020
 
um
 
10:00 Uhr
 
im
 
Raum 1007 (L1)
 
über das Thema:
 

»Full exceptional collections on Lagrangian Grassmannians«

Abstract:
It is well known that every vector bundle on the projective space P^n admits a resolution by vector bundles which are direct sums of the line bundles O(i). A celebrated theorem of Beilinson implies that one can do better: every vector bundle can be fully described in terms of the line bundles O, O(1), …, O(n). More precisely, he showed that the latter form a so called full exceptional collection in the derived category of P^n. Later Kapranov found a similar collection of vector bundles on Grassmannians. A long standing conjecture states that one construct such a collection on any rational homogeneous variety; in particular, on orthogonal and isotropic Grassmannians. We will discuss the mentioned results and show how to prove this conjecture for Lagrangian Grassmannians.

 

Hierzu ergeht herzliche Einladung.
Prof. Dr. Maxim Smirnov



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