<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">皆様<br class=""><br class="">複素解析幾何セミナー@東大数理のご案内です。<br class=""><br class=""></div><h3 style="margin: 3px 0px 8px; padding: 5px 0px; font-family: メイリオ, Meiryo, "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", Osaka, "ＭＳ Ｐゴシック", "MS PGothic", Helvetica, Arial, sans-serif; font-size: 14px; font-stretch: inherit; line-height: inherit; vertical-align: baseline; border-top-width: 1px; border-top-style: dotted; border-top-color: rgb(33, 127, 196); border-bottom-width: 1px; border-bottom-style: dotted; border-bottom-color: rgb(33, 127, 196); overflow: hidden; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51);" class="">020年12月21日(月)</h3><h3 style="margin: 3px 0px 8px; padding: 5px 0px; font-family: メイリオ, Meiryo, "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", Osaka, "ＭＳ Ｐゴシック", "MS PGothic", Helvetica, Arial, sans-serif; font-size: 14px; font-stretch: inherit; line-height: inherit; vertical-align: baseline; border-top-width: 1px; border-top-style: dotted; border-top-color: rgb(33, 127, 196); border-bottom-width: 1px; border-bottom-style: dotted; border-bottom-color: rgb(33, 127, 196); overflow: hidden; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51);" class=""><div class="seminar_naiyo" style="margin: 0px 0px 20px; padding: 0px; font-size: 13px; font-weight: normal; font-stretch: inherit; line-height: inherit; vertical-align: baseline;">10:30-12:00 オンライン開催<br class=""><strong style="margin: 0px; padding: 0px; font-family: inherit; font-size: inherit; font-style: inherit; font-variant-caps: inherit; font-stretch: inherit; line-height: inherit; vertical-align: baseline;" class="">Martin Sera 氏</strong> (京都先端科学大学)<br class="">On a mixed Monge-Ampère operator for quasiplurisubharmonic functions<br class=""><div class="waku" style="margin: 5px 0px 8px; padding: 9px; font-family: inherit; font-size: inherit; font-style: inherit; font-variant-caps: inherit; font-stretch: inherit; line-height: inherit; vertical-align: baseline; border: 1px solid rgb(204, 204, 204); background-color: rgb(239, 239, 239);">[ 講演概要 ]<br class="">This reports on a joint work with R. Lärkäng and E. Wulcan. We consider mixed Monge-Ampère products of quasiplurisubharmonic functions with analytic singularities (introduced in a previous work with H. Raufi additionally). These products have the advantage that they preserve mass (a property which is missing for non-pluripolar products).<br class="">The main result of the work presented here is that such Monge-Ampère products can be regularized as explicit one parameter limits of mixed Monge-Ampère products of smooth functions, generalizing a result of Andersson-Błocki-Wulcan. We will explain how the theory of residue currents, going back to Coleff-Herrera, Passare and others, plays an important role in the proof.<br class="">As a consequence, we get an approximation of Chern and Segre currents of certain singular hermitian metrics on vector bundles by smooth forms in the corresponding Chern and Segre classes.</div></div></h3><h3 style="margin: 3px 0px 8px; padding: 5px 0px; font-family: メイリオ, Meiryo, "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", Osaka, "ＭＳ Ｐゴシック", "MS PGothic", Helvetica, Arial, sans-serif; font-size: 14px; font-stretch: inherit; line-height: inherit; vertical-align: baseline; border-top-width: 1px; border-top-style: dotted; border-top-color: rgb(33, 127, 196); border-bottom-width: 1px; border-bottom-style: dotted; border-bottom-color: rgb(33, 127, 196); overflow: hidden; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51);" class="">参加URLはこちら（Zoom URLは今学期間共通です．登録は一度大丈夫です)</h3><div class=""><a href="https://zoom.us/meeting/register/tJ0vcu2rrDIqG9Rv5AT0Mpi37urIkJ1IRldB" class="">https://zoom.us/meeting/register/tJ0vcu2rrDIqG9Rv5AT0Mpi37urIkJ1IRldB</a><br class=""><br class="">今後の予定はこちら<br class=""><a href="https://www.ms.u-tokyo.ac.jp/seminar/geocomp/future.html" class="">https://www.ms.u-tokyo.ac.jp/seminar/geocomp/future.html</a><br class=""><br class="">講演者も募集中です。<br class=""><br class="">世話人<br class="">平地 健吾, 高山 茂晴</div></div>_______________________________________________<br class="">Geometry-ml mailing list<br class=""><a href="mailto:Geometry-ml@math.nagoya-u.ac.jp" class="">Geometry-ml@math.nagoya-u.ac.jp</a><br class=""><a href="https://mail.math.nagoya-u.ac.jp/mailman/listinfo/geometry-ml" class="">https://mail.math.nagoya-u.ac.jp/mailman/listinfo/geometry-ml</a><br class=""></div></div></body></html>