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<div align="center"><big> <b><big><br>
</big></b></big></div>
<div align="center"><big><b><big>Welcome to the 2021 Fall talks of
ODTU-Bilkent Algebraic Geometry Seminars</big></b></big><b><br>
</b><b> </b><b> </b></div>
<b> </b>
<div align="center"><i>since 2000</i><br>
<b> </b> </div>
<div align="center"><b> </b><b> </b><b><b>=================================================================</b>
</b><br>
<b> </b><br>
This week the <a
href="http://www.bilkent.edu.tr/%7Esertoz/agseminar.htm"
target="_blank" moz-do-not-send="true">ODTU-Bilkent Algebraic
Geometry Seminar</a> is <b>Online.</b> <br>
<br>
<i><font color="#ff00ff">This talk will begin at <u><b>16:00</b></u><u>(GMT+3)</u></font></i><br>
<br>
<b>=================================================================</b></div>
<div align="center"><br>
<br>
<div align="center"><b><img
src="cid:part2.211E844C.E936A8B0@bilkent.edu.tr" alt=""
class="" width="519" height="411"> </b><font size="-1"><i> </i></font></div>
<div align="center"><font size="-1"><i>Paul Gauguin (1848-1903)<br>
</i></font></div>
<div align="left"><br>
<b><b><font color="#ff0000">Speaker: <font color="#000000">İzzet
Coşkun</font></font></b><br>
<span lang="tr"></span><b><font color="#ff0000">Affiliation: <font
color="#000000">University of Illinois Chicago</font><br>
Title:<font color="#000000"> The cohomology of a general
stable sheaf on a K3 surface<br>
</font><br>
</font></b></b></div>
</div>
<div align="left"><b><b><font color="#ff0000">Abstract:</font></b></b><font
color="#ff0000"><font color="#000000"> In this talk, I will
describe joint work with Howard Nuer and Kota Yoshioka on
computing the cohomology of the general stable sheaf in a
moduli space of semistable sheaves on a K3 surface of Picard
rank 1. We find sharp bounds on the Mukai vector that
guarantees that the cohomology can be determined from the
Euler characteristic and classify all the Mukai vectors up to
rank 20 where the generic sheaf does not exhibit the expected
behavior. We make critical use of Bridgeland stability
conditions in our computation.<br>
<br>
</font></font></div>
<div align="left"><font color="#ff0000"><font color="#000000"><b><font
color="#ff0000">Date:<font color="#000000"> 1 October 2021</font></font></b>,
Friday</font></font><br>
</div>
<div align="left"><font color="#ff0000"><font color="#000000"><b> <font
color="#ff0000">Time: </font>16:00</b> (GMT+3)
<======= Notice the new time for this talk<br>
<b><font color="#ff0000">Place: </font></b><font
color="#ff0000"><font color="#000000"><b>Zoom<br>
</b></font></font></font></font></div>
<div align="left"><font color="#ff0000"><font color="#000000"><font
color="#ff0000"><font color="#000000"><b><br>
</b></font></font></font></font></div>
<blockquote>
<p><font color="#ff0000"><font color="#000000"><font
color="#ff0000"><font color="#000000"><b><b style="color:
rgb(51, 51, 51); font-family: arial, verdana,
sans-serif; font-size: 14px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps:
normal; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing:
0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);
text-decoration-style: initial;
text-decoration-color: initial;">One day before the
seminar, an announcement with the Zoom meeting link
will be sent to those who registered with Sertöz. <br>
</b></b></font></font></font></font></p>
<p><font color="#ff0000"><font color="#000000"><font
color="#ff0000"><font color="#000000"><b><b style="color:
rgb(51, 51, 51); font-family: arial, verdana,
sans-serif; font-size: 14px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps:
normal; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing:
0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);
text-decoration-style: initial;
text-decoration-color: initial;">If you have
registered before for one of the previous talks,
there is no need to register again; you will
automatically receive a link for this talk too.<br>
</b></b></font></font></font></font></p>
<p><font color="#ff0000"><font color="#000000"><font
color="#ff0000"><font color="#000000"><b><b style="color:
rgb(51, 51, 51); font-family: arial, verdana,
sans-serif; font-size: 14px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps:
normal; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing:
0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);
text-decoration-style: initial;
text-decoration-color: initial;">If you have not
registered before, please contact him at<span> <a
moz-do-not-send="true"
href="mailto:sertoz@bilkent.edu.tr?subject=Zoom%20Seminar%20Address%20Request">sertoz@bilkent.edu.tr</a></span>.</b></b></font></font></font></font></p>
</blockquote>
<p><font color="#ff0000"><font color="#000000"><font color="#ff0000"><font
color="#000000"><b> </b></font></font></font></font></p>
<div align="left"><br>
</div>
<div align="left">Please bring your own tea and cookies and
self-serve at the convenience of your own home! 😁<span
class="moz-smiley-s1"><span></span></span></div>
<div align="left"><br>
</div>
<div align="left">You are most cordially invited to attend.</div>
<div align="left"><br>
</div>
<div align="left">Ali Sinan Sertöz<br>
<font color="#ff0000"><font color="#000000"><b><font
color="#ff0000"> </font></b></font></font></div>
<div align="left"><b><font color="#0080c0">PS: <i>As this is the
first announcement of this semester, please let me know if
you want to drop out of this mailing list: just send me an
email saying "unsubscribe", no questions asked, no
explanation is necessary.</i></font></b></div>
<div align="left"><b><font color="#0080c0"><i><br>
</i></font></b></div>
<div align="left"><b><font color="#0080c0"><i>Also feel free to
forward this message to anyone whom you think might be
interested.</i></font></b></div>
<div align="left"><b><font color="#0080c0"><i>And if you received
this message as a forwarded message and want to be on the
list yourself, again please send me an email.</i></font></b></div>
<div align="left"><b><font color="#0080c0"><i><br>
</i></font></b></div>
<div align="left"><b><font color="#0080c0"><i>Speakers are
automatically included in the announcement and Zoom Link
lists.</i></font></b></div>
<div align="left"><b><font color="#0080c0"><i><br>
</i></font></b></div>
<div align="left"><font color="#ff0000"><font color="#000000"><b><font
color="#0080c0"><i>Thank you all! We could not have done
it without your support.</i></font></b><br>
</font></font></div>
<pre class="moz-signature" signature-switch-id="07ffc569-c388-4f65-9311-87f39bd235fa" cols="72">----------------------------------------------------------------------------
Ali Sinan Sertöz
Bilkent University, Department of Mathematics, 06800 Ankara, Turkey
Office: (90)-(312) - 290 1490
Department: (90)-(312) - 266 4377
Fax: (90)-(312) - 290 1797
e-mail: <a class="moz-txt-link-abbreviated" href="mailto:sertoz@bilkent.edu.tr" moz-do-not-send="true">sertoz@bilkent.edu.tr</a>
Web: sertoz.bilkent.edu.tr
----------------------------------------------------------------------------</pre>
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