|
[信州大学]
[理学部]
[数学科]
390-8621 長野県松本市旭3-1-1 |
|
管理者：境 圭一 ---ksakai(at)math.shinshu-u.ac.jp |
[ 講演予定 ] [ これまでの講演 ] [ セミナー参加者 ] [ Algebraic Toplogy: A guide to literature ] [ English ]
講演予定
| 題目： | Delooping theorems for embedding spaces. Applications to spaces of knots and links. |
|---|---|
| 講演者： | Julien Ducoulombier (Max Planck Institute) |
| 会場： | このセミナーはオンラインで行われます．参加をご希望の方はこちらのフォームからお申し込みください． |
| 概要： | During this short presentation, I would like to give an overview of the delooping theorems as well as applications to spaces of long embeddings. In particular, we show that spaces of long embeddings (such as knots or links) are weakly equivalent to explicit iterated loop spaces. All of them can be expressed in terms of derived mapping spaces of operads. Such identifications can be used to understand the rational homotopy groups of embedding spaces. |
| 題目： | Two-dimensional Golod complexes |
|---|---|
| 講演者： | 入江 幸右衛門（大阪府立大学） |
| 会場： | このセミナーはオンラインで行われます． |
| 概要： |
We characterize two-dimensional Golod complexes combinatorially by vertex-breakability and topologically by the fat-wedge filtration of a polyhedral product.
Applying the characterization, we consider a difference between Golodness over fields and rings, which enables us to give a two-dimensional simple Golod complex over any field such that the corresponding moment-angle complex is not a suspension. This talk is based on a joint work with D. Kishimoto. |
2020年度の講演
| 題目： | Generating functions and topological complexity |
|---|---|
| 講演者： | 岸本 大祐（京都大学） |
| 会場： | このセミナーはオンラインで行われました． |
| 題目： | Twisted equivariant K-theory of operator algebras and topological phases of matter |
|---|---|
| 講演者： | 窪田 陽介（信州大学） |
| 会場： | このセミナーはオンラインで行われました． |
| 題目： | The topological complexity of polygon spaces |
|---|---|
| 講演者： | 神山 靖彦（琉球大学） |
| 会場： | このセミナーはオンラインで行われました． |