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SUMMARY:On sums of sets - Katalin Gyarmati (Eotvos Lorand\, Budapest)
DTSTART:20090218T141500Z
DTEND:20090218T151500Z
UID:TALK16175@talks.cam.ac.uk
CONTACT:Ben Green
DESCRIPTION:For finite sets of integers A1\,...\, An we study the cardinal
 ity of the n-fold sumset A1+...+An compared to those of (n-1)-fold sumsets
  A1+...+A{i-1}+A{i+1}+...+An. We prove a superadditivity and a submultipli
 cativity property for these quantities. We also examine the case when the 
 addition of elements is restricted to an addition graph between the sets.
LOCATION:MR12\, CMS
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