[geometry-ml:05279] 【変更8月7日】東北大学幾何学セミナー

[本多正平]

幾何学メーリングリストのみなさま，

先日8月7日に行われる予定の東北大学幾何学セミナーについて案内を流しましたが，その講演者の一人のQin
Deng(MIT)さんのフライトスケジュールが変更になった関係で，Qin
Dengさんの講演がキャンセルとなり，次のように当日のスケジュールが変更になったことをお知らせいたします；

—ここから—

形式：対面（数学棟201号室）
スケジュール：
13:00-14:00 Elia Brue (Bocconi University)
14:00-14:30 質疑応答
14:30-15:30 Chiara Rigoni (University of Vienna)
15:30-16:00 質疑応答


講演者：Elia Brue氏（Bocconi University）
タイトル：Collapsing under lower curvature bounds and topological stability
概要：The study of collapsing Riemannian manifolds under various curvature
constraints is a topic of profound interest in geometric analysis. After a
brief introduction to the subject, I will present a new topological
stability result. Specifically, I will demonstrate that a sequence of tori
with a uniform diameter and lower scalar curvature bound converges to a
torus.

This is based on joint work with A. Naber and D. Semola.


講演者：Chiara Rigoni氏（University of Vienna）
タイトル：Convergence of metric measure spaces satisfying the CD condition for
negative values of the dimensional parameter
概要：In this talk, we show the stability of the curvature-dimension condition
for negative values of the generalized dimension parameter under a suitable
notion of convergence. We start by presenting an appropriate setting to
introduce the CD(K, N)-condition for N < 0, allowing metric measure
structures in which the reference measure is quasi-Radon. Then in this
class of spaces we introduce the distance $d_{\mathsf{iKRW}}$, which
extends the already existing notions of distance between metric measure
spaces. Finally, we prove that if a sequence of metric measure spaces
satisfying the CD(K, N)-condition with N < 0 is converging with respect to
the distance $d_{\mathsf{iKRW}}$ to some metric measure space, then this
limit structure is still a CD(K, N) space. This talk is based on a joint
work with M. Magnabosco and G. Sosa.


—ここまで—


なお，次のページでも本セミナーの情報を見ることができます；

https://sites.google.com/site/aobageometry/

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