Yuichi Ike

Higher-dimensional Birkhoff attractors as γ-supports and their properties, One-day workshop on contact and symplectic dynamics, Kyushu University, Kyushu, Japan, Nov. 2024.

γ台と超局所層理論，Geometry and Mathematical Physics, Graduate School of Mathematical Sciences, The University of Tokyo, Tokyo, Japan, Nov. 2024.

γ-supports and sheaves, Tuesday Seminar on Topology, Graduate School of Mathematical Sciences, The University of Tokyo, Tokyo, Japan, May 2024.

パーシステントホモロジーとその応用，純粋数学者のためのデータサイエンス入門，Nagoya University, Aichi, Japan, March, 2024. slide

位相的データ解析と機械学習 ，愛媛大学DS研究セミナー，online, March 2024. slide

パーシステントホモロジーと機械学習，ディープラーニングと物理学/学習物理領域セミナー，Kyoto University, Kyoto, Japan, February 2024. slide

位相的データ解析とその応用，統計数学×情報×物質セミナー，Kyushu University, Kyushu, Japan, Nobember 2023. slide

Sheaf quantization for the completion of the space of Lagrangians, Various problems in microlocal analysis and asymptotic analysis, Research Institute for Mathematical Sciences, Kyoto University, Kyoto, Japan, November 2023.

パーシステントホモロジーと機械学習，ipi-ダイキン シンポジウム，Tokyo University, Tokyo, Japan, October 2023. slide

Persistent Homology and Machine Learning, WORKSHOP on Mathematics for Industry, online, September 2023. slide

The completion of the space of Lagrangians and sheaves, UCLA Topology Seminar, UCLA, Los Angeles, U.S., September 2023.

The completion of the space of Lagrangians and sheaves,  USC Topology Seminar, University of Southern California, Los Angeles, U.S., September 2023.

位相的データ解析に基づく損失関数とその最適化について，日本応用数理学会連続最適化研究部会第2回研究会，Tokyo Institute of Technology, Tokyo, Japan, July 2023. slide

超局所層理論とシンプレクティック幾何学，Sugimoto Algebra Seminar, Osaka Metropolitan University, Osaka, Japan, June 2023.

層のインターリービング距離とシンプレクティック幾何学におけるエネルギー，九大幾何学・トポロジー合同セミナー，Kyushu University, Kyushu, Japan, April 2023.

TDA的損失関数の最適化について，ACT-X「数理・情報のフロンティア」第1回成果報告会，online, April 2023. 

Interleaving Distance for Sheaves and Symplectic Geometry, USTC-IGP Geometry & Topology seminar, online, April 2023. slide

パーシステントホモロジーと機械学習，Meetシリーズ第一回「Topology Meets Data」, 一橋講堂, Tokyo, Japan, January 2023. slide

位相的データ解析とトポロジー的損失関数の最適化，第12回計算力学シンポジウム，Science Council of Japan, Tokyo, Japan, December 2022. slide

Convergence of stochastic subgradient descent for persistence-based loss functions,  The 15th Mathematical Society of Japan-Seasonal Institute (MSJ-SI2022), Deepening and Evolution of Applied Singularity Theory, Workpia Yokohama, Kanagawa, Japan, November 2022. slide

Tamarkin圏におけるインターリービング距離の完備性とC0シンプレクティック幾何への応用，One Day Workshop on Symplectic Geometry and Related Topics, Graduate School of Mathematics, Nagoya University, Aichi, Japan, November 2022.

Completeness of interleaving distance on Tamarkin category and C^0-symplectic geometry, Séminaire symplectix, Institut Henri Poincaré, Paris, France, October 2022.

Interleaving for sheaves and quantitative problems in symplectic geometry, Séminaire de topologie, géométrie et algèbre, Le Laboratoire de Mathématiques Jean Leray, Nantes, France, October 2022.

Topological loss functions and topological representation learning, The 2nd POSTECH MINDS Workshop on Topological Data Analysis and Machine Learning, online, September 2022. slide

RipsNet: fast and robust estimation of persistent homology for point clouds,  AATRN Applied Topology Seminar, online, June 2022. slide

Interleaving distance for sheaves and symplectic geometry, Boston-Keio-Tsinghua Workshop 2022, online, June 2022. slide

位相的データ解析と機械学習への応用，金沢創発数理セミナー, Kanazawa University, Ishikawa, Japan, June 2022. slide

Topological loss functions and topological representation learning, Workshop on Functional Inference and Machine Intelligence 2022, online, March 2022. slide

位相的データ解析と機械学習 (Topological Data Analysis and Machine Learning), 東京大学数理情報学談話会, online, March 2022. slide (Japanese)

Interleaving distance for sheaves and displacement energy in symplectic geometry, PSHT Online Seminar,  online, January 2022. slide

TDA的損失関数の確率的劣勾配法に関する収束定理, JSIAM 2021 annual conference, online, September 2021. slide (Japanese)

Microlocal sheaf theory and energy estimates in symplectic geometry, The 68th geometry symposium, online, September 2021. slide

層の圏上のパーシステンス的距離とシンプレクティック幾何における分離エネルギー (Persistence-like distance on a sheaf category and displacement energy in symplectic geometry), The 68th topology symposium, online, August 2021. slide

層の圏におけるインターリービング的距離と分離エネルギー  (Interleaving-like distance on a sheaf category and displacement energy), Aspects of Mirror Symmetry 2021, online, August 2021. slide

TDAのニューラルネットワーク解析への応用 (Applications of TDA to neural network analysis), Topics on Topological Data Analysis, online, August 2021. slide (Japanese)

Convergence Result of Stochastic Subgradient Descent for Persistence-based Functions, Waseda Cherry Blossom Workshop on Topological Data Science, online, March 2021. slide

Stochastic subgradient descent for persistence-based functionals and automated vectorization method for persistence diagrams, Asia Pacific Seminar on Applied Topology and Geometry, online, December 2020. slide

Persistence-like distance on sheaf category and displacement energy, Workshop on geometry of foliations and its applications, online, December 2020. slide

層理論とその応用 (Sheaf theory and its applications), 0x Seminar, online, October 2020. note (Japanese, handwritten)

Persistence-like distance on Tamarkin category and displacement energy, Séminaire symplectix, online, October 2020. slide

Microlocal theory of sheaves and displacement energy, MSJ Autumn Meeting 2020, online, September 2020.

PersLay: A Neural Network Layer for Persistence Diagrams and New Graph Topological Signatures, JSIAM 2020 annual conference, online, September 2020.

Topological data analysis from a practical and mathematical perspective, iTHEMS Math Seminar, RIKEN, online, July 2020. slide for the latter half

層理論によるパーシステント加群へのアプローチ (Sheaf-theoretical approach to persistence modules), 3rd AIP mathematical group seminar, Maholova Minds Miura, Kanagawa, Japan, February 2020.

層コボルディズムとTamarkin圏における距離 (Sheaf cobordism and distance on Tamarkin category), Seminar on geometry and related topics, Graduate School of Mathematics, Nagoya University, Aichi, November 2019.

超局所層理論と幾何学 (Microlocal sheaf theory and geometry), 若者のための現代幾何入門(Introduction to Modern Geometry for young people), Graduate School of Mathematical Sciences, The University of Tokyo, Tokyo, Japan, June 2018.

Microlocal Hofer distance and displacement energy,  Symplectic geometry and around, KKR Hakodate, Hokkaido, Japan, March 2018.

Persistence-like distance on Tamarkin's category and symplectic displacement energy, Tuesday Seminar on Topology, Graduate School of Mathematical Sciences, The University of Tokyo, Tokyo, Japan, January 2018.

Applications of microlocal sheaf theory to symplectic geometry in cotangent bundles, Geometry Seminar, Tokyo Metropolitan University, Tokyo, Japan, June 2017.

Introduction to microlocal sheaf theory and sheaf quantization, Mini Workshop on Microlocal Geometry, 2017, Graduate School of Mathematics, Nagoya University, Aichi, Japan, April 2017.

Sheaf-theoretic approaches to symplectic geometry in cotangent bundles, Seminar on geometry and related topics, RIMS, Kyoto University, Kyoto, Japan, March 2017.

Compact exact Lagrangian intersection in cotangent bundles via sheaf quantization, The 12th Kagoshima Algebra-Analysis-Geometry Seminar, Kagoshima University, Kagoshima, Japan, February 2017.

Categorical localization for the coherent-constructible correspondence, Workshop on mirror symmetry and related topics, Kyoto 2016, Kyoto University, Kyoto, Japan, December 2016.

Hyperbolic localization and Lefschetz fixed point formulas for higher-dimensional fixed point sets, Séminaire Analyse Algébrique, IMJ-PRG, Paris, France, October 2016.

Categorical localization for the coherent-constructible correspondence, Séminaire symplectix, Institut Henri Poincaré, Paris, France, October 2016.

Hyperbolic localization and Lefschetz fixed point formulas for higher-dimensional fixed point sets, Workshop on Stratified Spaces: Perspectives from Analysis, Geometry and Topology, The Fields Institute, The University of Toronto, Toronto, Canada, August 2016. slide

Categorical localization for the coherent-constructible correspondence (poster session, with T. Kuwagaki), Summer school 2016 of the IMJ-PRG, Symplectic topology, sheaves and mirror symmetry, IMJ-PRG, Paris, France, June--July 2016. 

Lefschetz fixed point formulas for higher-dimensional fixed point sets, The sixth Japanese-Australian Workshop on Real and Complex Singularities, Kagoshima University, Kagoshima, Japan, November 2015. slide

Hyperbolic localization and Lefschetz fixed point formulas for higher-dimensional fixed point sets, "Microlocal Analysis and Singular Perturbation Theory", RIMS, Kyoto University, Kyoto, Japan, October 2015. slide

Hyperbolic localization and Lefschetz fixed point formulas for higher-dimensional fixed point sets, Saitama university Thursday seminar (geometry), Saitama University, Saitama, Japan, July 2015. 

Hyperbolic localization and Lefschetz fixed point formulas for higher-dimensional fixed point sets, TUAT seminar 2015, Tokyo University of Agriculture and Technology, Tokyo, Japan, June 2015.