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Dear all,<div><br></div><div><div dir="auto">as a part of the series of seminars <i>"Insalate di Matematica"</i>, we remind you that this morning there is a seminar held by Margherita Piccolo<span style="color:rgb(49,49,49);word-spacing:1px"> (</span><span style="color:rgb(49,49,49);word-spacing:1px">Heinrich-Heine-Universität
<span style="color:rgb(34,34,34);word-spacing:0px">Düsseldorf</span></span><span style="color:rgb(49,49,49);word-spacing:1px">)</span>. <br></div><div dir="auto">Here the details:</div><div dir="auto"><br></div><div dir="auto">
<div><u>Google Meet access link</u>: <a href="http://meet.google.com/gkp-zuys-dqd" style="word-spacing:1px;font-family:Roboto,Helvetica,Arial,sans-serif;white-space:nowrap" target="_blank">
<span class="gmail-JtukPc">meet.google.com/saz-pcbd-fad</span>
</a></div><div><br></div><div><div><span style="color:rgb(49,49,49);word-spacing:1px"><u>Date and time</u>: </span><b style="color:rgb(49,49,49);word-spacing:1px">24th June </b><b style="color:rgb(49,49,49);word-spacing:1px">2021, 11:00 am</b> </div><div><b><br></b></div><div><u>Speaker</u>: <b>Margherita Piccolo <span style="color:rgb(49,49,49);word-spacing:1px">(</span><span style="color:rgb(49,49,49);word-spacing:1px">HHU Düsseldorf</span><span style="color:rgb(49,49,49);word-spacing:1px">)</span> </b></div><div><br></div><div><div dir="auto" style="color:rgb(49,49,49);word-spacing:1px"><u>Title</u>: <b>"<span style="background-color:rgb(255,255,255)"><span style="color:rgb(34,34,34)">Representation growth of semisimple profinite groups</span></span><span style="color:rgb(34,34,34);word-spacing:0px">"</span></b></div><div dir="auto" style="color:rgb(49,49,49);word-spacing:1px"><b><span style="color:rgb(34,34,34);word-spacing:0px"><br></span></b></div><div dir="auto" style="color:rgb(49,49,49);word-spacing:1px"><b><span style="color:rgb(34,34,34);word-spacing:0px">
</span></b><div><div><div dir="auto"><u style="color:rgb(49,49,49);word-spacing:1px">Abstract</u><font color="#313131"><span style="word-spacing:1px">:</span></font><span style="font-family:arial,sans-serif;text-align:justify"></span> A profinite group is called semisimple if it is the
Cartesian product of finite simple groups. The representation growth of
such groups can be studied looking at the distribution of irreducible
representations by means of a zeta function, that is a Dirichlet
generating function. Under certain restrictions, the representation
growth is polynomial with a wide range of growth.Moreover, given a
profinite group, it is generally a difficult question to determine if
it is, in fact, isomorphic to a profinite completion of an abstract
group. In this talk, I discuss a result of Kassabov and Nikolov which
provides a criteria for a semisimple profinite group to be a profinite
completion. Based on this, I report on my work which is aimed at
constructing semisimple profinite groups with specified polynomial
representation growth that arise as profinite completions of abstract
groups (with the same representation growth).
</div><div dir="auto" style="color:rgb(49,49,49);word-spacing:1px"><br></div><div dir="auto"><u style="color:rgb(49,49,49);word-spacing:1px">Keywords</u><font color="#313131"><span style="word-spacing:1px">:
<font color="#313131"><span style="word-spacing:1px"></span></font>Semisimple profinite groups, Representation growth, Profinite completion.
</span></font><span style="font-family:arial,sans-serif;text-align:justify"></span><span style="font-family:arial,sans-serif;text-align:justify"></span></div></div></div><div dir="auto"><br></div><div dir="auto"><div style="margin:0px;padding:0px 0px 20px;width:950px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif"><div id="gmail-m_3161469671145441656gmail-m_-1765163967043133120gmail-m_7970745501861047874gmail-m_-1004660380037434576gmail-m_4822363926758315780gmail-m_-369167476743310248gmail-m_-2882397068727340795gmail-m_-1581393640403765847gmail-m_-2417041185583126384gmail-:17w" style="direction:ltr;margin:8px 0px 0px;padding:0px"><div id="gmail-m_3161469671145441656gmail-m_-1765163967043133120gmail-m_7970745501861047874gmail-m_-1004660380037434576gmail-m_4822363926758315780gmail-m_-369167476743310248gmail-m_-2882397068727340795gmail-m_-1581393640403765847gmail-m_-2417041185583126384gmail-:17v" style="overflow:hidden;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;line-height:1.5;font-family:Arial,Helvetica,sans-serif"><div dir="ltr"><div dir="ltr"><div><i><b>** We inform you that this talk will be recorded and uploaded on our website. If you join the seminar <u>after the starting time</u>, we kindly ask you to ensure that <u>your microphone and webcam are turned off</u> **</b></i></div><div><i><b><br></b></i></div><div><i><b>
</b></i><div><span style="color:rgb(49,49,49);word-spacing:1px">We are looking forward to seeing you.</span> </div><div> <span style="color:rgb(0,0,0);white-space:pre-wrap;word-spacing:1px"><br></span></div><div>The organizers: Luigi Appolloni, Federico Bernini, Francesca Cottini, Luca Di Gravina, Ludovico Marini</div>
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