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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Dear all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Best wishes for 2025! A couple of things:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">I am happy to announce that Aaron Gootjes-Dreesbach is speaking next week Tuesday 11:00 in the AG in our seminar room. Title and abstract below.
<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">My plan is to organize the AG again this year. For this I am looking for speakers.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">For PhD’s/postdocs/staff:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">We want to have speakers.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3"><span lang="EN-US" style="font-size:11.0pt">Let me know if you have guests. We can always rearrange the schedule of internal speakers.<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3"><span lang="EN-US" style="font-size:11.0pt">Let me know if you want me to invite people (e.g. graduating phd students from the Netherlands)<o:p></o:p></span></li></ul>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">As it has been a while that we talked about our own interests, I think it is good to do a cycle. Do you want to speak in the seminar? Please let me know. Possible ideas for topics:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l2 level1 lfo2"><span lang="EN-US" style="font-size:11.0pt">Your own research<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l2 level1 lfo2"><span lang="EN-US" style="font-size:11.0pt">A paper that you read about that you liked<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l2 level1 lfo2"><span lang="EN-US" style="font-size:11.0pt">A cool mathematical fact that you always wanted to share.
<o:p></o:p></span></li></ul>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">I strongly encourage all PhD’s to talk!
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Talks don’t have to be fully polished, and results can be in progress. This can be a nice avenue to get some early feedback.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Please have a look at the schedule on my site. Please volunteer on a Tuesday that is not taken yet<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><a href="https://www.few.vu.nl/~trt800/arbeitsgemeinschaft.html">https://www.few.vu.nl/~trt800/arbeitsgemeinschaft.html</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Best,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Thomas<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt">14-01-2025 Aaron Gootjes-Dreesbach<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt">Jet configuration spaces and weightings<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Blowing up the diagonal of $M^2$ for a manifold $M$ yields a configuration space that remembers the collision axis of collided configurations. Fulton and MacPherson famously generalized this construction to
configurations of more than two points. In joint work with A. del Pino, we build configuration spaces for jets of maps $M\to N$ in the same spirit, but adapted to the main structure on jet space: The Cartan distribution and the Lie filtration it generates.
Higher jet orders necessitate the use of \textit{weighted} blow-ups, which we tackle within the recent differential-geometric framework of \textit{weightings} due to Loizides and Meinrenken. In this talk, I first intuitively illustrate this motivation and
our construction. I will then give an introduction to weightings and discuss how we use them as far as time allows.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
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