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Department of Mathematics

Researcher List >> Ryo Nikkuni
 

Ryo Nikkuni

 
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NameRyo Nikkuni
URLhttp://www.lab.twcu.ac.jp/~nick/index-e.html
AffiliationTokyo Woman's Christian University
SectionDepartment of Mathematics, School of Arts and Sciences
Job titleProfessor
DegreeDoctral degree in Information Sciences(Tohoku University)
Research funding number00401878
J-Global ID200901068608565487

Research Interests

 
Low-dimensioal topology ,Knot theory ,Spatial graph theory

Research Areas

 
  • Natural sciences / Geometry / Low-dimensional topology

Research History

12>
 
Apr 2017
 - 
Today
Tokyo Woman's Christian University School of Arts and Sciences Professor 
 
Apr 2009
 - 
Mar 2017
Tokyo Woman's Christian University School of Arts and Sciences Associate professor 
 
Apr 2008
 - 
Mar 2009
Kanazawa University Faculty of Teacher Education, Institute of Human and Social Sciences Associate professor 
 
Apr 2007
 - 
Mar 2008
Kanazawa University Faculty of Education Associate professor 
 
Apr 2005
 - 
Mar 2007
Kanazawa University Faculty of Education Associate professor 
 

Education

 
Apr 1999
 - 
Mar 2002
Tohoku University Graduate School of Information Sciences Division of Mathematics, Doctral Program
 
Apr 1997
 - 
Mar 1999
Tohoku University Graduate School of Information Sciences Division of Mathematics, Master Program
 
Apr 1993
 - 
Mar 1997
Rikkyo University College of Science Department of Mathematics
 

Committee Memberships

12>
 
Mar 2023
 - 
Nov 2023
公益財団法人 数学オリンピック財団  国際数学オリンピック(IMO)2023 実行委員
 
Dec 2018
 - 
Nov 2021
日本学術振興会  科学研究費委員会専門委員
 
May 2017
 - 
Jul 2018
日本学術振興会  卓越研究員候補者選考委員会書面審査員
 
Aug 2016
 - 
Jul 2018
日本学術振興会  国際事業委員会書面審査員・書面評価員
 
Aug 2016
 - 
Jul 2018
日本学術振興会  特別研究員等審査会専門委員
 

Awards

 
Feb 2024
東京女子大学, 2023年度エクセレント・ファカルティー
新國 亮 
 
Jul 2018
日本学術振興会, 平成29年度特別研究員等審査会専門委員(書面担当)表彰
新國 亮 
 

Papers

12345>
 
 
Converses to generalized Conway-Gordon type congruences
Ryo Nikkuni   
Tokyo Journal of Mathematics   47(1) to appear   Jun 2024   [Refereed]
 
Crossing numbers and rotation numbers of cycles in a plane immersed graph
Ayumu Inoue   Naoki Kimura   Ryo Nikkuni   Kouki Taniyama   
Journal of Knot Theory and Its Ramifications   31(11) 2250076   Aug 2022   [Refereed]
 
Capturing links in spatial complete graphs
R. Nikkuni   
Journal of Knot Theory and Its Ramifications   31(03) 2250022   Mar 2022   [Refereed]
We say that a set of pairs of disjoint cycles [Formula: see text] of a graph [Formula: see text] is linked if for any spatial embedding [Formula: see text] of [Formula: see text] there exists an element [Formula: see text] of [Formula: see text] s...
 
Generalization of the Conway-Gordon theorem and intrinsic linking on complete graphs
Hiroko Morishita   Ryo Nikkuni   
Annals of Combinatorics   25(2) 439-470   Jun 2021   [Refereed]
 
Stick number of non-paneled knotless spatial graphs
Erica Flapan   Kenji Kozai   Ryo Nikkuni   
New York Journal of Mathematics   26 836-852   Aug 2020   [Refereed]

Misc.

 
 
Topology of spatial graphs and their intrinsic properties
Ryo Nikkuni   
76(1) 1-26   Jan 2024   [Refereed][Invited]
 
空間グラフのトポロジー
新國 亮   
数理科学   617 13-19   2014   [Invited]

Books and Other Publications

 
 
新國 亮(Part:Sole author)
サイエンス社   Jul 2022   (ISBN:9784781915487)

Presentations

12345>
 
 
新國 亮   
研究集会「結び目理論」   14 Feb 2024   [Invited]
 
新國 亮   
ミニシンポジウム「グラフ理論とその関連分野」，Japanese Conference on Combinatorics and its Applications 2023   28 Aug 2023   [Invited]
 
Ryo Nikkuni   
Knots and Spatial Graphs 2023   16 Jun 2023   KAIST   [Invited]
 
Ryo Nikkuni   
AMS Sectional meeting (2021 Fall Southeastern Sectional Meeting, formerly at the University of South Alabama)   20 Nov 2021   [Invited]
 
Ryo Nikkuni   
Workshop on Knot Theory   4 Sep 2021   [Invited]

Professional Memberships

 
 
   
 
Mathematical Society of Japan

Research Projects

12>
 
 
Topology of spatial graphs and their intrinsic properties
Japan Society for the Promotion of Science: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Project Year: Apr 2022 - Mar 2025
 
Hierarchy structures of spatial graphs and algebraic invariants
Japan Society for the Promotion of Science: KAKENHI(Multi-year Fund), Grant-in-Aid for Scientific Research (C)
NIKKUNI Ryo 
Project Year: Apr 2019 - Mar 2023
 
Geometric structures and combinaorial structures of 3-manifolds
Japan Society for the Promotion of Science: Grants-in-Aid for Scientific Research
Sakuma Makoto 
Project Year: Apr 2015 - Mar 2020
 
Algebraic invariants for spatial graphs and its applications
Japan Society for the Promotion of Science: KAKENHI(Multi-year Fund), Grant-in-Aid for Scientific Research (C)
Ryo Nikkuni 
Project Year: Apr 2015 - Mar 2019
 
Geometric structure and combinatorial structure of 3-dimensional manifolds
Japan Society for the Promotion of Science: Grants-in-Aid for Scientific Research
SAKUMA MAKOTO SHIMADA Ichiro DOI Hideo YASUI Koichi HIRANOUCHI Toshiro KAMADA Seiichi KONO Masaharu NIKKUNI Ryo AKIYOSHI Hirotaka HIRASAWA Mikami OHSHIKA Ken'ICHI WADA Masaaki MIYACHI Hideki KIN Eiko KOBAYASHI Tsuyoshi YAMASHITA Yasushi MORIMOTO Kanji NAKANISHI Toshihiro KOMORI Yohei SUGAWA Toshiyuki SHACKLETON Kenneth 
Project Year: Apr 2010 - Mar 2015

Social Activities

 
 
[Lecturer]
FROMPAGE 夢ナビライブ2012 14 Jul 2012
 
[Lecturer]
武蔵野市 武蔵野地域五大学共同講演会 1 Nov 2011

Media Coverage

 
 
講談社   Rikejo   vol. 32, pp.56--57   Feb 2015   [Newspaper, magazine]
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