Tel Aviv University - Colloquium
Hello everyone,
The next colloquium talk will be held on Monday, 14/3/2011, 12:15, Schreiber
006, Tel Aviv University. The speaker is
     Michael Cwikel (Technion)
and the title of his talk is
     A simple(?) geometric question with deep consequences for BMO functions
The abstract is given below. Tea and coffee at 12:00, same room.
Hope to see you there. For information about future colloquiua, see
You are all welcome to suggest colloquium speakers, especially for the next
academic year.
Abstract:  I will pose and invite you to solve a seemingly rather simple
geometric/combinatoric question. My coauthors and I have discovered that an
affirmative answer to this question would have some very interesting
consequences in analysis. They relate to the very important function space
BMO (of functions of Bounded Mean Oscillation). I will not assume
familiarity with BMO, and will briefly survey some of its remarkable
properties. Special cases of one of our results give alternative proofs of
the celebrated John-Nirenberg inequality for BMO functions. An affirmative
answer to the above-mentioned question would lead to a version of the
John-Nirenberg inequality with dimension free constants. A more extensive
version of this abstract and a first version of our detailed paper etc. are
available at
This is joint work with Yoram Sagher and Pavel Shvartsman.
Technion Math Net-2 (TECHMATH2)
Editor: Michael Cwikel   <> 
Announcement from: Bo'az Klartag   <>