BEN GURION UNIVERSITY OF THE NEGEV
            DEPARTMENT OF MATHEMATICS
 
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       Operator and System Theory Seminar
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SPEAKER: Shibananda Biswas , BGU
 
TITLE:   Curvature inequality and infinitely divisible metrics
 
DATE:    Monday, December 12, 2011
 
PLACE:   Room -101, Mathematics Building, BGU
 
TIME:	 14:10
 
ABSTRACT:
 
The curvature $\mathcal K_T(w)$ of a contraction $T$ in the Cowen-Douglas
class $B_1(\mathbb D)$ is bounded above by the curvature $\mathcal K_{S^*}(w)$
of the backward shift operator. However, in general, an operator satisfying the
curvature inequality need not be contractive. We will discuss this issue
in multivariate setup and isolate the special circumstances which force
contractivity of the operator assuming it satisfies the curvature inequality.
This is a joint work with Dinesh Keshari and Gadadhar Misra.
 
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>