<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-9">
<style type="text/css" style="display:none;"><!-- P {margin-top:0;margin-bottom:0;} --></style>
</head>
<body dir="ltr">
<div id="divtagdefaultwrapper" style="font-size: 12pt; color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android Emoji', EmojiSymbols;" dir="ltr">
<p style="margin-top:0;margin-bottom:0"><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;">Değerli liste üyeleri,</span><br>
</p>
<div style="color: rgb(0, 0, 0);">
<div dir="ltr">
<div id="x_divtagdefaultwrapper" dir="ltr" style="color: rgb(0, 0, 0);">
<p style="margin-top: 0px; margin-bottom: 0px;"><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;"><br>
</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;"><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;"></span><span style="font-size: 11pt;">2 </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;"><span style="font-size: 11pt;">Mayıs</span><span style="font-size: 11pt;">
2018 Çarşamba günü, </span></span><font style="font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android Emoji', EmojiSymbols; font-size: 12pt;"><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;">Galatasaray
Üniversitesi Matematik Bölüm Seminerleri kapsamında</span></font><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;">, </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;"> </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;">Özlem
Beyarslan</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;"> , ''</span><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif, serif, EmojiFont; font-size: 11pt;">Fields with Virtually Free Group Action</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;">'</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;">' </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;">başlıklı
bir konuşma verecektir. </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;">Konuşma saat 13:30'da, FEF 7 numarali sınıfta yapılacaktır. Konuşma detayları aşağıdadır.</span></p>
<div style="color: rgb(0, 0, 0);">
<div dir="auto">
<div>
<div>
<div>
<div id="x_x_divtagdefaultwrapper" dir="ltr" style="color: rgb(0, 0, 0);"><span style="font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0); font-size: 11pt;"></span><span style="font-size: 11pt;"></span>
<p style="font-family: Calibri, Helvetica, sans-serif, serif, EmojiFont; font-size: 12pt;">
<span style="font-size: 11pt;"></span><span style="font-size:11pt; font-family:Calibri,Helvetica,sans-serif; color:rgb(0,0,0)"></span><span style="font-size:11pt; font-family:Calibri,Helvetica,sans-serif"></span><span style="font-size:11pt"></span></p>
<span style="font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0); font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0); font-size: 11pt;"></span><span style="font-size: 11pt;"></span>
<p style="font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android Emoji', EmojiSymbols; font-size: 12pt;">
<span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><br>
</span></p>
<span style="font-size: 11pt;"></span>
<p style="font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android Emoji', EmojiSymbols; font-size: 12pt;">
<span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">Seminere tüm liste üyeleri davetlidir.</span></p>
<span style="font-size: 11pt;"></span>
<p style="font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android Emoji', EmojiSymbols; font-size: 12pt;">
<span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><br>
</span></p>
<span style="font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0); font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0); font-size: 11pt;"></span><span style="font-size: 11pt;"></span>
<p style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android Emoji', EmojiSymbols; font-size: 12pt;">
<span style="font-size: 11pt;"></span><span style="font-size:11pt; font-family:Calibri,Helvetica,sans-serif; color:rgb(0,0,0)"></span><span style="font-size:11pt; font-family:Calibri,Helvetica,sans-serif"></span><span style="font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont; font-size:11pt"></span><span style="font-family:Menlo,Consolas,'Lucida Console','DejaVu Sans Mono',monospace,serif,EmojiFont; font-size:12px"><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">Saygılarımla,</span></span></p>
<span style="font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0); font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0); font-size: 11pt;"></span><span style="font-size: 11pt;"></span>
<p style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android Emoji', EmojiSymbols; font-size: 12pt;">
<span style="font-size: 11pt;"></span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;">Buse Fırat</span><br>
<span style="font-size: 11pt;"></span></p>
<span style="font-size: 11pt;"></span>
<p style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android Emoji', EmojiSymbols; font-size: 12pt;">
<span style="font-size: 11pt;"></span><span style="font-size:11pt; font-family:Calibri,Helvetica,sans-serif; color:rgb(0,0,0)"></span><span style="font-size:11pt; font-family:Calibri,Helvetica,sans-serif"></span><span style="font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont; font-size:11pt"></span></p>
<span style="font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0); font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0); font-size: 11pt;"></span><span style="font-size: 11pt;"></span>
<p style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android Emoji', EmojiSymbols; font-size: 12pt;">
<span style="font-size: 11pt;"></span><span style="font-size:11pt; font-family:Calibri,Helvetica,sans-serif; color:rgb(0,0,0)"></span><span style="font-size:11pt; font-family:Calibri,Helvetica,sans-serif"></span><span style="font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont; font-size:11pt"><a href="http://math.gsu.edu.tr/seminar.html" target="_blank" rel="noopener noreferrer" class="x_x_x_OWAAutoLink" id="LPlnk853626" previewremoved="true"><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0);">http://math.gsu.edu.tr/seminar.html</span></a></span></p>
<span style="font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0); font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0); font-size: 11pt;"></span><span style="font-size: 11pt;"></span>
<p style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android Emoji', EmojiSymbols; font-size: 12pt;">
<span style="font-size: 11pt;"></span><span style="font-size:11pt; font-family:Calibri,Helvetica,sans-serif; color:rgb(0,0,0)"></span><span style="font-family:Arial,Helvetica,sans-serif,serif,EmojiFont; font-size:10pt; color:rgb(33,33,33); line-height:18.299999237060547px"><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><br>
</span></span></p>
<span style="font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0); font-size: 11pt;"></span><span style="font-size: 11pt;"></span>
<p style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android Emoji', EmojiSymbols; font-size: 12pt;">
<span style="font-size: 11pt;"></span><span style="font-size:11pt; font-family:Calibri,Helvetica,sans-serif; color:rgb(0,0,0)"></span><span style="font-family:Arial,Helvetica,sans-serif,serif,EmojiFont; font-size:10pt; color:rgb(33,33,33); line-height:18.299999237060547px"><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><br>
</span></span></p>
<span style="font-size: 11pt;"></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0); font-size: 11pt;"></span><span style="font-size: 11pt;"></span>
<div class="" style="font-family: wf_segoe-ui_normal, 'Segoe UI', 'Segoe WP', Tahoma, Arial, sans-serif, serif, EmojiFont; font-size: 15px; color: rgb(33, 33, 33);">
<div style="color: rgb(34, 34, 34); font-family: arial, sans-serif, serif, EmojiFont; font-size: 12.8px;">
<span style="font-size: 12.8px;"><span style="font-size: 12.8px;"><span style="font-size: 11pt;">Başlık</span><span style="font-size: 11pt;">: </span><span style="font-size: 11pt;">Fields with Virtually Free Group Action</span></span></span></div>
<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif, serif, EmojiFont; font-size: 12.8px;"><span style="font-size: 12.8px;">
<div><span style="font-size: 12.8px;"><span style="font-size: 12.8px;"><br>
</span></span></div>
<span style="font-size: 11pt;">Özet: This is joint work with Piotr</span><span style="font-size: 11pt;"> </span><span id="x_gmail-m_7198559729528310038:1jr.3" style="font-size: 11pt;">Kowalski</span><span style="font-size: 11pt;">. </span></span><span style="font-size: 11pt;">A
G-field is a field, together with an action of a group G by field automorphisms. Our purpose is to give an axiomatization of the theory of "generic", i.e. existentially closed G-fields. If such</span><span style="font-size: 11pt;"> </span><span id="x_gmail-m_7198559729528310038:1jr.4" style="font-size: 11pt;">axiomatization</span><span style="font-size: 11pt;"> </span><span style="font-size: 11pt;">for
the class of existentially closed G-fields exists, we call the resulting theory G-</span><span id="x_gmail-m_7198559729528310038:1jr.5" style="font-size: 11pt;">TCF</span><span style="font-size: 11pt;">. If G is the trivial group then</span><span style="font-size: 11pt;"> </span><span style="font-size: 11pt;">G-</span><span id="x_gmail-m_7198559729528310038:1jr.6" style="font-size: 12.8px;"><span style="font-size: 11pt;">TCF
is the theory of algebraically closed fields, ACF. If G is the</span><span style="font-size: 11pt;"> </span></span><span style="font-size: 11pt;">group of integers, then G-</span><span id="x_gmail-m_7198559729528310038:1jr.6" style="font-size: 11pt;">TCF</span><span style="font-size: 11pt;"> </span><span style="font-size: 11pt;">exists
and its theory is very well studied ACFA, the theory of algebraically closed fields with a generic automorphism. It is also known that G-</span><span id="x_gmail-m_7198559729528310038:1jr.9" style="font-size: 11pt;">TCF</span><span style="font-size: 11pt;"> </span><span style="font-size: 11pt;">exist
if G is finite, and G is a finitely generated free group. A natural generalization of finite groups and free groups is the class of virtually free groups. Our main theorem says that, when G</span><span style="font-size: 11pt;"> </span><span style="font-size: 11pt;"> is
a finitely generated virtually free group, then </span><span style="font-size: 11pt;">G-</span><span id="x_gmail-m_7198559729528310038:1jr.10" style="font-size: 11pt;">TCF</span><span style="font-size: 11pt;"> exists. We also give field theoretic propertied
of G-fields.</span></span><br>
</div>
<div class="" style="font-family: wf_segoe-ui_normal, 'Segoe UI', 'Segoe WP', Tahoma, Arial, sans-serif, serif, EmojiFont; font-size: 15px; color: rgb(33, 33, 33);">
<span style="font-size:11pt; font-family:Calibri,Helvetica,sans-serif; color:rgb(0,0,0)"></span></div>
<span style="font-size: 11pt;"></span>
<p style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android Emoji', EmojiSymbols; font-size: 12pt;">
<br>
</p>
<p style="font-family: wf_segoe-ui_normal, 'Segoe UI', 'Segoe WP', Tahoma, Arial, sans-serif, serif, EmojiFont; font-size: 15px;">
<span style="color:rgb(34,34,34); font-family:arial,sans-serif,serif,EmojiFont; font-size:12.8px"><span style="font-family:Calibri,Helvetica,sans-serif; font-size:11pt"></span></span></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>