Mean unknotting times
by Tao-ban Chan
Abstract: A strand of DNA if often tangled inside a cell, and must
untangle to replicate. This is done by the action of the family of
topoisomerase enzymes, which cut and rejoin the DNA.
We have studied the duration of this process using a simple knot model.
We model the DNA by a knot, and then study the time taken to unknot by
randomly reversing crossings in the knot. We have generated random knot
embeddings by means of self-avoiding polygon trails.
The talk will also include a bit of knot theory for those who know knot.
For More Information: Iwan Jensen tel: 8344-5214 email: I.Jensen@ms.unimelb.edu.au