Mathematician Michael Freedman during the 2010 NZIMA Workshop on Topological Quantum Field Theory and Knot Homology Theory in Hahei, New Zealand.
<a href="https://da.wikipedia.org/wiki/User:Pred" class="extiw" title="da:User:Pred">Søren Fuglede Jørgensen</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>