<div dir="ltr">My Algebra Seminar talk this Tuesday might be of interest to some of you:<br><div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">---------- Forwarded message ---------<br>From: <b class="gmail_sendername" dir="auto">Alex Feingold</b> <span dir="auto"><<a href="mailto:alex@math.binghamton.edu">alex@math.binghamton.edu</a>></span><br>Date: Sun, Feb 6, 2022 at 9:46 AM<br>Subject: Algebra Seminar - Feb. 8, 2022 at 2:50 PM in WH-100E<br>To: Algebra Seminar <<a href="mailto:algsem@math.binghamton.edu">algsem@math.binghamton.edu</a>><br></div><br><br>
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<b>If we have a normal semester, the seminar will meet
in-person on Tuesdays in room WH-100E at 2:50 p.m. <br>
There should be refreshments served at 4:00 in room WH-102. If
COVID causes us to change the plan, we <br>
would go back to having only zoom talks. Currently we are required
to use masks for all indoor campus events, <br>
so all speakers and attendees must wear masks in the Algebra
Seminar.<br>
<br>
</b>
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<li>
<div> <b>February 8</b><br>
<span style="color:blue;font-size:120%"> Daniel Studenmund
(Binghamton University) </span> <br>
<b><i>The profinite topology and related constructions</i></b>
<br>
<br>
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<p> <b><i>Abstract</i></b>: This talk will give
an intro to, and examples of, the profinite topology on an
abstract group. After reviewing the example of the p-adic
topologies on the integers and rationals, we will define
the profinite topology and give Furstenberg's proof of the
infinitude of primes. We will use this to define the
abstract commensurator of a group and provide some
examples. Examples will connect with the theory of
profinite groups, Galois groups, and non-Archimedean local
fields.
</p>
</div>
</div>
</li>
</ul>
<br>
<b></b>
<pre cols="72">--
______________________________________________________
Professor Alex J. Feingold
Department of Mathematical Sciences
State University of New York
Binghamton, New York 13902-6000
Fax: 607-777-2450 (To Math Department)
Email: <a href="mailto:alex@math.binghamton.edu" target="_blank">alex@math.binghamton.edu</a>
Webpages: <a href="http://people.math.binghamton.edu/alex/" target="_blank">http://people.math.binghamton.edu/alex/</a>
______________________________________________________
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