BEN GURION UNIVERSITY OF THE NEGEV
            DEPARTMENT OF MATHEMATICS
 
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       Operator and System Theory Seminar
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SPEAKER: Dmitry Kerner, University of Toronto
 
TITLE:   On local decomposability of matrix functions
 
DATE:    Monday, January 3, 2011
 
PLACE:   Room -101, Mathematics Building, BGU
 
TIME:	 14:10
 
ABSTRACT:
 
Consider a matrix whose entries are analytic or formal series in several
variables. When is the matrix two-sided equivalent to a block diagonal or at
least to an upper-block-triangular?
 
An immediate necessary condition is reducibility of the determinant,
but this is far from being sufficient.  Using the relation to
determinantal representations we formulate various necessary and
sufficient conditions.
 
For further announcements see
 <http://www.math.bgu.ac.il/~vinnikov/otseminar>
 
For further information please contact:
 
Daniel Alpay   <dany@math.bgu.ac.il> , phone: 08-6461603
Victor Vinnikov   <vinnikov@math.bgu.ac.il> , phone: 08-6461618
 
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Technion Math Net-2 (TECHMATH2)
Editor: Michael Cwikel   <techm@math.technion.ac.il> 
Announcement from: Victor Vinnikov   <vinnikov@cs.bgu.ac.il>