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<p class="MsoNormal"><span lang="EN-US">Dear all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Below is the invitation to the DDT&G coming friday.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I will go directly from my house but Michael (Jung) is leaving from the department.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">You can coordinate with him if you want to travel together. Can you send him an email if you will travel from Zuid?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Hope to see you Friday!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thomas<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p style="margin:0cm"><span style="font-size:12.0pt;color:black">You are cordially invited to attend the next instalment of the Dutch Differential Topology and Geometry seminar, which will start at</span><span class="apple-converted-space"><span style="font-size:12.0pt;color:black"> </span></span><b><span style="font-size:12.0pt;color:black">2
p.m. on Friday 3 June</span></b><span style="font-size:12.0pt;color:black">. <o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<span style="font-size:12.0pt;color:black">We are glad to announce that our speaker will be</span><span class="apple-converted-space"><span style="font-size:12.0pt;color:black"> <b>Misha Hlushchanka </b></span></span><span style="font-size:12.0pt;color:black">(Utrecht University),
and the title of his seminar will be</span><span class="apple-converted-space"><span style="font-size:12.0pt;color:black"> </span></span><b><span style="font-size:12.0pt;color:black">"On Thurston's vision in Geometry, Topology, and Dynamics"</span></b><span style="font-size:12.0pt;color:black">. Please
see below for a more detailed description of the seminar's content.<o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<span style="font-size:12.0pt;color:black">We would like to remind you that master students with an interest in topology and geometry are strongly encouraged to participate.<o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<span style="font-size:12.0pt;color:black">The seminar will be held in <b>Leiden (Snellius, room 401)</b>.<o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black">It will also be possible to follow the seminar online</span><span class="apple-converted-space"><span style="font-size:12.0pt;color:black"> (</span></span><span style="font-size:12.0pt;color:black">login details will
be available soon).<o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<span style="font-size:12.0pt;color:black">The schedule for all participants will be as follows:<o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<span style="font-size:12.0pt;color:black">2:00-3:00 p.m.: first part of the seminar (little to no prior knowledge assumed)<o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black">3:00-3:30 p.m.: coffee break/questions about part I<o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black">3:30-4:30 p.m.: second part of the seminar (slightly more advanced level)<o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black">4:30-...: more questions, discussion and beer <o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<span style="font-size:12.0pt;color:black">Please visit the seminar's webpage for additional information and an overview of past and upcoming talks:<o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black"><a href="https://www.few.vu.nl/~trt800/ddtg.html" title="https://www.few.vu.nl/~trt800/ddtg.html">https://www.few.vu.nl/~trt800/<span style="color:#070706;background:#FFEE94">ddt</span>g.html</a><o:p></o:p></span></p>
<p style="margin:0cm;caret-color: rgb(0, 0, 0);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-size-adjust: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<span style="font-size:12.0pt;color:black">We would also like to remind you that the previous lectures are available on the youtube channel of the seminar: <o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black"><a href="https://www.youtube.com/channel/UCN0o3PUqaC_ZhPNuM846kgg/" title="https://www.youtube.com/channel/UCN0o3PUqaC_ZhPNuM846kgg/">https://www.youtube.com/channel/UCN0o3PUqaC_ZhPNuM846kgg/</a><o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<span style="font-size:12.0pt;color:black">We hope to see many of you at the seminar!<o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<span style="font-size:12.0pt;color:black">Alvaro,</span><span class="apple-converted-space"><span style="font-size:12.0pt;color:black"> </span></span><span class="searchhighlight"><span style="font-size:12.0pt;color:#070706;background:#FFEE94">Federica</span></span><span style="font-size:12.0pt;color:black">,
Rob, and Thomas.<o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<b><span style="font-size:12.0pt;color:black">Abstract:</span></b><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<span style="font-size:12.0pt;color:black">Since the 1980s, Bill Thurston has done fundamental work in apparently quite different areas of mathematics: geometry of 3-manifolds, geometry of surface automorphisms, and dynamics of branched covers of the 2-sphere.
In all contexts, Thurston's theorems have fundamental importance and are the cornerstones of ongoing research. These results are surprisingly closely connected both in statements and in proofs. In all three areas, the statements can be expressed as follows:
either a topological object has a geometric structure (the manifold is geometric, the surface automorphism has Pseudo-Anosov structure, a branched cover of the sphere respects the complex structure), or there is a well defined topological-combinatorial obstruction.
Moreover, all three theorems are proved by an iteration process in a finite dimensional Teichmüller space (this is a complex space that parametrizes Riemann surfaces of finite type).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">The goal of this minicourse is to discuss Thurston's theorems (up to some level of detail) and the common machinery (Teichmüller theory) in a unified way, so as to highlight many of the analogies
between the results. We may also have a glimpse at the modern research in holomorphic dynamics continuing the legacy of Bill Thurston.<o:p></o:p></span></p>
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