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<div dir="auto">皆様<br />
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東大数理・複素解析幾何セミナーのお知らせです。<br />
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《日時》2021年5月31日(月) 10:30-12:00<br />
《形式》Zoomを用いたオンラインセミナー<br />
《講演者》竹内 有哉 氏 (筑波大学)<br />
《タイトル》Nonnegativity of the CR Paneitz operator for embeddable CR manifolds<br />
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《講演概要》<br />
The CR Paneitz operator, which is a fourth-order CR invariant differential operator, plays a crucial role in three-dimensional CR geometry; it is deeply connected to global embeddability and the CR positive mass theorem. In this talk, I will show that the CR Paneitz operator is nonnegative for embeddable CR manifolds. I will also apply this result to some problems in CR geometry. In particular, I will give an affirmative solution to the CR Yamabe problem for embeddable CR manifolds.<br />
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《セミナーの参加方法》<br />
Zoomを用いたオンラインセミナーです。参加される方は以下のURLから参加登録をお願いします。<br />
<a href="https://u-tokyo-ac-jp.zoom.us/meeting/register/tJ0vcu2rrDIqG9Rv5AT0Mpi37urIkJ1IRldB" target="_blank">https://u-tokyo-ac-jp.zoom.us/meeting/register/tJ0vcu2rrDIqG9Rv5AT0Mpi37urIkJ1IRldB</a><br />
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今後の予定はこちら<br />
<a href="https://www.ms.u-tokyo.ac.jp/seminar/geocomp/future.html" target="_blank">https://www.ms.u-tokyo.ac.jp/seminar/geocomp/future.html</a><br />
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講演者も募集中です。<br />
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世話人<br />
平地 健吾, 高山 茂晴, 野村 亮介</div>
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