Department of Computer Science | Institute of Theoretical Computer Science | CADMO

Prof. Emo Welzl and Prof. Bernd Gärtner

Mittagsseminar Talk Information |

**Date and Time**: Tuesday, May 23, 2006, 12:15 pm

**Duration**: This information is not available in the database

**Location**: This information is not available in the database

**Speaker**: Jakub Cerny (Charles Univ., Prague)

A geometric graph is a graph drawn in the plane so that the vertices are represented by points in general position and edges are represented by straight line segments. A topological graph is defined similarly, but the edges are represented by Jordan curves. Two of these curves share at most one point and no curve passes through a vertex.

One of the main questions is to determine or estimate the maximum number of edges of a geometric or a topological graph on $n$ vertices without containing a forbidden subgraph. There are many results for various classes of forbidden subgraphs. The mostly studied classes are $k$-pairwise disjoint edges and $k$-pairwise crossing edges.

I will talk about results for these two classes, open problems and I will also show the main ideas of the proof that a geometric graph with no tree disjoint edges has at most $2.5n$ edges.

Upcoming talks | All previous talks | Talks by speaker | Upcoming talks in iCal format (beta version!)

Previous talks by year: 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 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 1.4803M | admin login