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

Theory of Combinatorial Algorithms

Prof. Emo Welzl and Prof. Bernd Gärtner

Mittagsseminar (in cooperation with M. Ghaffari, A. Steger and B. Sudakov)

Mittagsseminar Talk Information

Date and Time: Thursday, May 15, 2014, 12:15 pm

Duration: 30 minutes

Location: CAB G51

Speaker: Malte Milatz (RWTH Aachen)

Methods for Khovanov homology

Given two knots or links, how may one decide whether they are equivalent? This is a fundamental question in knot theory, known to be decidable, and it reduces to a purely combinatorial question by Reidemeister's theorem.

The general decidability procedure, however, is so complex and unpromising that knot theorists prefer to work on link invariants. Here we have a look at one such invariant, Khovanov homology, which is an example of how to use algebra (homology) for a combinatorial problem.

Computing Khovanov homology of a given link cannot be done efficiently in general. We will discuss methods for its (full or partial) computation in favourable cases, using spectral sequences as a tool.


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

Previous talks by year:   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