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<p>皆さま，</p>
<p>下記のセミナーの開催場所：</p>
<p>場所：中央大学・後楽園キャンパス 6号館 12階 61202号室</p>
<p>より</p>
<p>場所：中央大学・後楽園キャンパス 6号館 ''11階 61125B号室"</p>
<p>に変更なりました．</p>
<p>よろしくお願いいたします．</p>
<p>芥川和雄</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 2022/06/14 12:57, Kazuo Akutagawa
wrote:<br>
</div>
<blockquote type="cite" cite="mid:CO1PR17MB52908B3ED2D278ED65D58D83EFAA9@CO1PR17MB5290.namprd17.prod.outlook.com">
<p>皆さま，</p>
<p>下記のように中央大・幾何トポロジーセミナーを対面で行います．</p>
<p>ご参加をお待ちしています．</p>
<p><br>
</p>
<p>場所：中央大学・後楽園キャンパス 6号館 12階 61202号室</p>
<p>日時：7月1日（金）17：00～18：00</p>
<p>------------------------------------------------<br>
</p>
<p>講演者：Jeff Viaclovsky (Department of Mathematics, University of
California, Irvine) <span style="color: rgb(0, 0, 0);
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<div class="moz-forward-container"><br>
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<div class="moz-forward-container">タイトル: Gravitational instantons,
rational surfaces, and K3 surfaces<br>
<br>
講演要旨: I will describe some examples of complete non-compact
Ricci-flat metrics in dimension 4, which are called
"gravitational instantons.</div>
<div class="moz-forward-container">" In many cases, these can be
compactified complex analytically to rational surfaces. <br>
</div>
I will also discuss how these gravitational instantons can arise
from sequences of degenerating Ricci-flat metrics on the compact
K3 surface, through a process called "bubbling".<br>
--------------------------------------------------<br>
<p>芥川和雄<br>
</p>
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