Dear all,
A series of introductory lectures on higher categories will be given
online by Yuki Maehara, starting on 31 Jan (Mon), then every Mon and
Thu, and finishing on 17 Feb (Thu), as per below.
--
Title: A friendly introduction to ∞-categories
Lecturer: Yuki Maehara (Kyushu U)
Abstract: ∞-categories are to spaces what ordinary categories are to
sets. This nicely summarises the basic idea of ∞-categories, but there
is a large gap between this intuition and the definition(s) of
∞-category one finds in the literature. The aim of these lectures is
to fill this gap by answering the following question: What do we
really mean by "spaces", and what sort of things do we want to do with
them?
Lecture 1: Homotopy groups and Whitehead's theorem
Lecture 2: Kan complexes
Lecture 3: Model categories
Lecture 4: Homotopy commutative vs homotopy coherent
Lecture 5: Quasi-categories via spines
Lecture 6: Quasi-categories via inner horns
Schedule:
31 Jan (Mon) 4-5pm (AEDT/GMT+11)
3 Feb (Thu) 4-5pm (AEDT/GMT+11)
7 Feb (Mon) 4-5pm (AEDT/GMT+11)
10 Feb (Thu) 4-5pm (AEDT/GMT+11)
14 Feb (Mon) 4-5pm (AEDT/GMT+11)
17 Feb (Thu) 4-5pm (AEDT/GMT+11)
Held online via zoom at:
https://anu.zoom.us/j/87221396938?pwd=azgxQmJWWWhtTUFHUGdpcXE2MGp6QT09
No registration required.
Webpage (with the same information as above):
https://sites.google.com/view/higher-category/home
Thanks and best regards,
Yoshihiro
--
Yoshihiro Maruyama
Senior Lecturer, School of Computing,
CECS, The Australian National University
Canberra, ACT, 2601, Australia
Contact: yoshihiro.maruyama(a)anu.edu.au
logic-mlのみなさま
1月15日につぎのような小さな学際的論理Zoom集会を予定しています。世界論理デー(1月14日)を記念して開催します。お気軽にご参加ください。事前登録については下のURLをご覧ください。この告知メールはご自由に転送していただいて構いません。
投稿者 岡田光弘 峯島宏次 (慶應義塾大学)
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***世界論理デーを記念する3つのセッション***
Aspects of Logic Study Jan.15, 2022, 13:00-15:40 (日本時間 JST)
Part 1: Discussion with Jean-Yves Girard ジラール氏に聞く
Part 2: Disagreement in Logic and Reasoning 論理における不合意
Part 3: Interdisciplinary Studies 分野横断的話題
(Part 3-後半)高等教育と論理
An event organized as a "Disagreement in Logic and Reasoning" series event
Information/Program to be updated
For the past meeting information of WLD 2021, see here
Webページ:事前登録受付中, free registration open now
https://abelard.flet.keio.ac.jp/seminar/World_Logic_Day_2022/
The interdisciplinary and interuniversity research group on "Disagreement
in logic and Reasoning" presents Logic Sessions on the occasion of World
Logic Day 2022. (WLD was set by the UNESCO 2019 Conference with the
proposal by CIPSH and DLMPST).
Date
Saturday, Jan. 15th, 2022, 13:00-15:30 JST
Program (tentative)
Part 1: Special Session: Discussing Some Fundamental Issues on Logic,
Interview to Jean-Yves Girard and discussion
Jean-Yves Girard, Research Director Emeritus (*), CNRS
Part 2: Disagreement in Logic and Reasoning
Introduction: Koji Mineshima, Mitsuhiro Okada (Keio University), and Kengo
Okamoto (Tokyo Metropolitan University)
Logic and AI: Revisiting the Systematicity Argument through Analyzing
Neural Models on Monotonicity Inference: Hitomi Yanaka (The University of
Tokyo)
Disagreement in Counterfactuals (tentative title): Yuichiro Hosokawa (Gunma
Prefectural women's University)
Intuitionism vs. Formalism in Logic (tentative title): Yuta Takahashi
(Ochanomizu University)
The project was announced/launched on the WLD 2021 as an international,
interdisciplinary and interuniversity project. We have some guest talks and
project reports on this Session.
Part 3: Interdisciplinary Approaches in Logic
Studies of Inference of macaque, a neuro-scientific approach: Mineki Oguchi
and Masamichi Sakagami (Tamagawa University) [脳科学グループ]
Logic and Cognitive Science: Can we recognize logical concepts in images
(as in natural language)?: Yuri Sato (The University of Tokyo) [認知科学グループ]
Higher Education and Logic: Yuko Murakami (Rikkyo University)
論理教育についてのディスカッション 主に日本語使用
Messages from guests
Contact
Host Organization: Global Research Center for Logic and Sensitivity of Keio
University
Contact address: logic[at]abelard.flet.keio.ac.jp
---
**
*Dear all,*
*
On Tuesday January 25th, Aart Middeldorp (University of Innsbruck,
Austria) will give a talk, Polynomial Termination over N is Undecidable,
for our project colloquium from 16:30. Further details can be found below.
If you would like to attend, please register through the following
Google form:
https://forms.gle/6PoGNEfJVHLYDAdKA <https://forms.gle/6PoGNEfJVHLYDAdKA>
We later send you a zoom link by an email (using BCC).
For the latest information about ERATO colloquium / seminar, please see
the webpage
https://docs.google.com/document/d/1Qrg4c8XDkbO3tmns6tQwxn5lGHOrBON5LtHXXTp…
.
Jérémy Dubut (ERATO MMSD Colloquium Organizer)
Email: dubut(a)nii.ac.jp
-------Tuesday January 25th, 16:30-18:00
Speaker: *Aart Middeldorp (University of Innsbruck, Austria)*
**
Title: *Polynomial Termination over N is Undecidable*
Abstract: Using the undecidability of Hilbert's 10th problem, we present
three different proofs of the undecidability of the problem whether the
termination of a given rewrite system can be shown by a polynomial
interpretation in the natural numbers. The talk is based on joint work
with Fabian Mitterwallner.
*