Junya's blog

This is a blog of Junya Nishiguchi.

Papers

Submitted

  • Junya Nishiguchi, "Theory of well-posedness for delay differential equations via prolongations and $C^1$-prolongations: its application to state-dependent delay," submitted to Journal of Differential equations.

Published

2017

  • Junya Nishiguchi, "A necessary and sufficient condition for well-posedness of initial value problems of retarded functional differential equations," Journal of Differential Equations, 263, (2017), 3491-3532.

http://dx.doi.org/10.1016/j.jde.2017.04.038

2016

  • Junya Nishiguchi, "On parameter dependence of exponential stability of equilibrium solutions in differential equations with a single constant delay," Discrete and Continuous Dynamical Systems - Series A, 36, (2016), 5657-5679.

http://dx.doi.org/10.3934/dcds.2016048

Talks in 2018

(Scheduled)



国際学会

  • (Invited) Junya Nishiguchi, "A unification of theory of well-posedness for delay differential equations," Third International Conference on the Dynamics of Differential Equations - Fundamentals and Developments - in Memory of Professor Jack K. Hale, Hiroshima.

hale-conference.com

  • Junya Nishiguchi, TBA, ICMC - Summer Meeting on Differential Equations - 2018 Chapter, Sao Paulo, Brazil.

.:: ICMC Summer Meeting on Differential Equations 2018 ::.

国内学会・シンポジウム

  • 西口 純矢，「遅延微分方程式が定める半流れの連続性に関する統一的理論」，RIMS研究集会「力学系　－理論と応用の融合－」，京都大学．

日本数学会・2018年度年会

  • 西口 純矢，「A theory of attraction and compact $\mathcal{C}$-attractors in uniformizable spaces」，2017年度冬の力学系研究集会，日本大学軽井沢研修所，1月5日〜8日（発表日6日）．

Talks and Posters

2017

International conferences

  • (Invited) Junya Nishiguchi, "Differential equations with unbounded delay, and dynamics in spaces without natural metrics," RIMS Workshop "Succession and Innovation of Studies on ODEs in Real Domains", Kyoto.

Web page: RIMS Workshop "Succession and Innovation of Studies on ODEs in Real Domains"

  • Junya Nishiguchi, "Time-delay systems, and dynamics in spaces without natural metrics," AIMR Math Group Seminar, Tohoku University, Miyagi, October 6, 2017.

Web page: WPI-AIMR Math Unit

  • Junya Nishiguchi, "An interpretation of time-delay coordinates for time-delay systems", RIMS Workshop “Dynamical Systems ― Joint Exploration of Theory and Application”, Kyoto, June 5 - 9 (7).

Web page: http://www.math.keio.ac.jp/~hiroki/rims2017-e.html

  • Junya Nishiguchi, "A unification of theory of well-posedness for delay differential equations", Special LCDS Seminar, Providence, United States, February 23.

Web page: A Unification of theory of well-posedness for delay differential equations | Division of Applied Mathematics

  • Junya Nishiguchi, "A necessary and sufficient condition for well-posedness of initial value problems of retarded functional differential equations", ICMC - Summer Meeting on Differential Equations - 2017 Chapter, Sao Paulo, Brazil, February 6 - 8 (7).

Web page: .:: ICMC Summer Meeting on Differential Equations 2017 ::.

国内学会・シンポジウム

Web page: マクロ経済動学の非線形数理

  • 西口 純矢，「A unification of theory of well-posedness for delay differential equations」，南大阪応用数学セミナー，大阪市立大学，7月15日．

Web page: 南大阪応用数学セミナー（2017年度）-研究活動│大阪市立大学数学研究所 - Osaka City University Advanced Mathematical Institute Web

Web page: 応用数学に関する勉強会（応用数学セミナー）＠芝浦工大

Web page: 日本数学会・2017年度年会

  • 西口 純矢．「Global attrcators on spaces without natural metrics」，2016年度冬の力学系研究集会，日本大学軽井沢研修所，1月7日〜10日（発表日 7日）．

Program: https://tsujiimasato.files.wordpress.com/2015/03/2016-karuizawa-program.pdf

Read more

Teaching Assistant (in Japanese)

2012年度

前期
後期

2013年度

前期
後期
  • 線型代数学演習B（月5）
  • 吉田南数学質問コーナー（木 11:00-13:00）

2014年度

前期
  • 複素函数論（上田先生，月3）
  • 吉田南数学質問コーナー（木 11:00-13:00）
  • オープンキャンパスのお手伝い（8月8日）
  • 第12回吉田塾・数学入門合宿の TA（9月3-5日）
後期
  • 函数解析学（泉先生，木2）
  • 吉田南数学質問コーナー（火 11:00-13:00）
  • ３号館数学質問コーナー（水 11:00-13:00）※11月から
  • 京都大学ー復旦大学交流会 (Doctorial Forum of Mathematics between Fudan and Kyoto Universities) の世話人（11月3-8日）
  • 第６回白浜研究集会の実行委員（12月2-4日）

2015年度

前期
  • SGU 学部セミナー ※6月から
後期
  • SGU 学部セミナー
  • 第７回白浜研究集会の実行委員長

Visit to US and Germany

I have visited Rutgers University, Brown University, and University of Giessen from March 11 to 21. Because of the cancellation and the delay of my flight, I returned to Japan on 23.

I have obtained several perspectives on functional differential equations, and I am sure that this visit enables me to cultivate my research.

Finally, I acknowledge the financial support by Top Global University Project.

East asia forum

I participated "2015 East Asian Core Doctoral Forum on Mathematics'', and returned to Japan from Taiwan today. This forum was good opportunity of considering the future works.