Talks in Conference/Workshop:

• "Stability of non-proper functions"
  16th International Workshop on Real and Complex Singularities
  November 27, 2020, online
• "Trisections of 4-manifolds"
  Contact structure, singularity, differential equation and related topics
  January 21 & 22, 2020, Azarea (at Shizuoka)
• "Stability of non-proper functions"
  6th International Workshop on Singularities in Generic Geometry and its Applications
  October 24, 2019, University of Valencia
• "Topology of Pareto sets of strongly convex problems"
  Development of Multi-objective Optimization Benchmarks Based on Practice and Mathematics
  September 2, 2019, Kyusyu University
• "Stability of non-proper functions"
  Spring Central and Western Joint Sectional Meeting, Special Session on Real and Complex Singularities
  March 24, 2019 at University of Hawaii at Manoa
• "Stability of non-proper functions"
  MSJ Spring meeting 2019
  March 17, 2019 at Tokyo Institute of Technology
• "New counterexamples to Stipsicz's conjecture on fiber-sum indecomposable Lefschetz fibrations"
  Branched Coverings, Degenerations, and Related Topics 2019
  March 6, 2019 at Hiroshima University
• "Stability of non-proper functions"
  Research on topology and differential geometry using singularity theory of differentiable maps
  December 5, 2018 at Kyoto University (RIMS)
• "On diagrams of simplified trisections and mapping class groups"
  Local and global study of singularity theory of differentiable maps
  November 29, 2017 at Kyoto University (RIMS)
• "New counterexamples to Stipsicz's conjecture on fiber-sum indecomposable Lefschetz fibrations"
  Four Dimensional Topology
  November 26, 2017 at Osaka City University
• "Construction of Lefschetz fibrations and pencils via mapping class groups"
  Boston University/Keio University workshop 2017
  June 26, 2017 at Boston University
• "Topology of holomorphic Lefschetz pencils on the four-torus"
  Branched Coverings, Degenerations, and Related Topics 2017
  March 7, 2017 at Tohoku Gakuin University
• "Hurwitz equivalence for Lefschetz fibrations with multisections"
  Hurwitz action 6
  October 1, 2016 at Kusatsu Seminar House
• "Topology of Lefschetz pencils on symplectic Calabi-Yau 4-manifolds with positive b_1"
  リーマン面に関連する位相幾何学
  September 4, 2016 at the University of Tokyo
• "Topology of holomorphic Lefschetz pencils on the four torus"
  The 4th Workshop "Complex Geometry and Lie Groups"
  March 24, 2016 at Nara Woman's University
• "Uniqueness of holomorphic Lefschetz pencils on the four torus"
  Differential Topology 16
  March 21, 2016 at Tsukuba University
• "Topology of holomorphic Lefschetz pencils on abelian surfaces"
  MSJ Spring meeting 2016
  March 17, 2016 at Tsukuba University
• "On monodromies of holomorphic Lefschetz pencils on the four torus"
  接触構造、特異点、微分方程式及びその周辺
  January 21, 2016 at Kanazawa University satellite
• "Topology of holomorphic Lefschetz pencils on abelian surfaces"
  Hurwitz action 5
  January 11, 2016 at Osaka City University
• "Lefschetz fibrations and mapping class groups"
  Japanese Australian workshop on Real and Complex Singularities 6th
  November 26, 2015 at Kagoshima University
• "On monodromies of genus-3 Lefschetz pencils on the four torus"
  MSJ Autumn meeting 2015
  September 13, 2015 at Kyoto Sangyo University
• "Hurwitz equivalence for fibration structures on 4-manifolds"
  Extended KOOK seminar 2015
  August 21, 2015 at Kobe University
• "Multisections of Lefschetz fibrations and topology of symplectic 4-manifolds"
  MSJ Spring meeting 2015
  March 23, 2015 at Meiji University
• "Multisections of Lefschetz fibrations and topology of symplectic 4-manifolds"
  The tenth east sian school of knots and related topics
  January 27, 2015 at East China Normal University
• "Multisections of Lefschetz fibrations and topology of symplectic 4-manifolds"
  Four Dimensional Topology
  November 22, 2014 at Osaka City University
• "Multisections of Lefschetz fibrations and mapping class groups of surfaces"
  The 2nd Franco-Japanese-Vietnamese Symposium on Singularities
  August 27, 2014 at Hokkaido University
• "Multisections of Lefschetz fibrations and mapping class groups of surfaces"
  13th International Workshop on Real and Complex Singularities
  July 30, 2014 at ICMC USP
• "境界の成分を置換する写像類を用いたレフシェッツ束の多重切断の構成"
  写像類群における関係とレフシェッツ束空間
  March 20, 2014 at Kyushu Institute of Technology
• "Hurwitz系列の持ち上げを用いたレフシェッツ束の多重切断の構成"
  Hurwitz action〜ひねる代数〜
  January 25, 2014 at Kusatsu Seminar House
• "写像類群を用いた４次元多様体の組み合わせ的研究手法 -レフシェッツ束を中心に-"
  若者のための現代幾何入門
  December 13, 2013 at Osaka University
• "Logarithmic transformations and generalized complex structures"
  Four Dimensional Topology
  November 15, 2013 at Hiroshima University
• "対数変換と４次元多様体上の一般化された複素構造"
  MSJ Autumn meeting 2013
  September 26, 2013 at Ehime University
• "On four-manifolds with genus-1 simplified broken Lefschetz fibrations"
  Japanese-Brazilian Singularity Days
  September 20, 2013 at ICMC, USP
• "レフシェッツ束の多重切断と写像類群との関係"
  リーマン面に関連する位相幾何学
  August 28, 2013 at the University of Tokyo
• "種数１の単純特異レフシェッツ束を許容する４次元多様体について"
  第６０回トポロジーシンポジウム
  August 6, 2013 at Osaka City University
• "On four-manifolds with genus-1 simplified broken Lefschetz fibrations"
  Relation between topology・differential geometry and singularity theory
  May 30, 2013 at Hirosaki University
• "レフシェッツ束の多重切断と写像類群との関係"
  MSJ Spring meeting 2013
  March 21, 2013 at Kyoto University
• "Vanishing cycles and homotopies of wrinkled fibrations"
  接触構造、特異点、微分方程式及びその周辺
  January 30, 2013 at カレッジプラザ
• "レフシェッツ束の多重切断と写像類群との関係"
  Hurwitz actionとその周辺
  January 5, 2013 at Gunma University
• "Vanishing cycles and homotopies of wrinkled fibrations"
  Four dimensional Topology
  November 15, 2012 at Hiroshima University
• "Modification rule of monodromies in R_2-move"
  Nineteenth Gökova Geometry/Topology conference
  May 29, 2012 at Yücelen Hotel
• "4次元多様体の曲面図式のある構成法について"
  MSJ Spring meeting 2012
  March 27, 2012 at Tokyo University of Science
• "A combinatorial approach to broken Lefschetz fibrations via mapping class groups"
  Branched Covering, Degenerations and Related Topics
  March 7, 2012 at Hiroshima University
• "特異レフシェッツ束から得られる全空間のカービィ図式について"
  写像類群の幾何と解析
  February 10, 2012 at KKRホテルびわこ
• "4次元多様体の曲面図式のある構成法について"
  Hurwitz action
  January 29, 2012 at Osaka City University
• "Four-manifolds admitting hyperelliptic broken Lefschetz fibrations"
  The Eighth East Asian School of Knots and Related Topics
  January 9, 2012 at KAIST
• "4次元多様体の曲面図式の具体例の構成について"
  結び目の数学IV
  December 27, 2011 at Tokyo Woman's Christian University
• "超楕円的特異レフシェッツ束を許す4 次元多様体について(1)"
  MSJ Autumn meeting 2011
  September 28, 2011 at Shinshu University
• "特異レフシェッツ束の切断について"
  MSJ Autumn meeting 2011
  September 28, 2011 at Shinshu University
• "種数1の単純特異レフシェッツ束について"
  リーマン面に関連する位相幾何学
  September 4, 2011 at the University of Tokyo
• "Classification of genus-$1$ simplified broken Lefschetz fibrations"
  Workshop on Lefschetz fibrations, broken Lefschetz fibrations and related topics
  March 29, 2011 at Kyushu University
• "種数1のsimplified broken Lefschetz fibrationについて"
  MSJ Spring meeting 2011
  March 21, 2011 at Waseda University
  (This talk was cancelled on account of earthquakes.)
• "Classification of genus-1 simplified broken Lefschetz fibrations"
  Spring Workshop 2011 on Low dimensional Topology and its Ramifications
  March 1, 2011 at Meijo University
• "On genus-1 simplified broken Lefschetz fibrations"
  The Seventh East Asian School of Knots and Related Topics
  January 10, 2011 at Hiroshima University