NORTHEASTERN UNIVERSITY
MATHEMATICS DEPARTMENT

REPRESENTATION THEORY AND RELATED TOPICS SEMINAR



 

Jerzy Weyman

(Northeastern University)
 

will speak on
 

On the Number of Subrepresentations of
a General Quiver Representation










ABSTRACT: Let Q be a quiver without oriented cycles. Let b,c be two dimension vectors and let a=b+c. Under the assumption <b,c>=0 it is expected that a general representation of dimension a has finitely many subrepresentations of
dimension b. We prove that this number equals to the dimension of the space of semi-invariants on representations of dimension c, of weight <b, ->. This is a joint work with H. Derksen and A. Schofield..

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Date: November 16
Time: 10:30 - 11:30
511 Lake Hall


For further information visit the Seminar web site at http://www.northeastern.edu/martsinkovsky/p/rtrt.html  or contact Alex Martsinkovsky <alexmart@neu.edu>