|Mittagsseminar Talk Information|
Date and Time: Thursday, November 20, 2008, 12:15 pm
Duration: This information is not available in the database
Location: CAB G51
Speaker: Marek Sulovský
Circle containment problem
The question is intuitively the following: given a set of n points in the plane,
can one always choose two points a, b from P such that every disk D containing a and b
contains many points of P, i.e. |D \cap P| >= tn + o(n) for some constant t.
What is the maximum value c of this constant?
Edelsbunner et al. proved in 1989 that c > 1/4.7 but the proof was quite long and even worse,
not completely correct. Although the mistake was fixed by later papers of Lovász et al.'04
and independently by Abrego et al.'05 the resulting proof of the lower bound is still quite complicated.
I will present a recent very short proof of this bound by P. Ramos and R. Viana from this year
Upcoming talks | All previous talks | Talks by speaker | Upcoming talks in iCal format (beta version!)
Previous talks by year: 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996
Information for students and suggested topics for student talks
Automatic MiSe System Software Version 1.3392 | admin login