Previous scientific talks                                                 (Back to Recent scientific talks)

 

Year 2020

 

1.      Mixing time and simulated annealing for the stochastic cellular automata (SCA).

·    International Workshop on Microstructure-based Global Analysis and Its Related Topics (November 7). Hokkaido University, Japan.

 

Year 2019

 

1.      Finding optimal solutions by stochastic cellular automata.

·    7th Wellington Workshop in Probability and Mathematical Statistics (December 5–7). Victoria University of Wellington, New Zealand.

·    Workshop on Probabilistic Methods in Statistical Mechanics of Random Media and Random Fields (May 27–31). Universiteit Leiden, the Netherlands.

·    AIMaP 1-day Workshop (March 26). RIES, Hokkaido University, Japan.

 

2.      Critical two-point function for long-range models with power-law couplings: The marginal case for d ³ dc.

·    The 12th MSJ-SI “Stochastic Analysis, Random Fields and Integrable Probability” (July 31–August 9). Kyushu University, Japan.

·    Seminar in Statistics (January 16). The University of Auckland, New Zealand.

 

Year 2018

 

1.      Critical two-point function for long-range models with power-law couplings: The marginal case for d ³ dc.

·    17th International Symposium “Stochastic Analysis on Large-scale Interacting Systems”  (November 5–8). RIMS, Kyoto University, Japan.

·    High-dimensional Critical Phenomena in Random Environments (September 24–26). The University of Bristol, UK.

·    2018 Spring Probability Workshop (June 4–8). Academia Sinica, Taiwan.

 

2.      Hyperscaling for oriented percolation in 1+1 space-time dimensions.

·    Rikkyo Math Phys Seminar (May 23). Rikkyo University, Japan

·    NUS Probability Seminar (February 12). National University of Singapore, Singapore.

 

Year 2017

 

1.      Hyperscaling for oriented percolation in 1+1 space-time dimensions.

·    NTU Math Colloquium (November 27). National Taiwan University, Taiwan.

 

2.      強磁性イジング模型の相転移・臨界現象に関する研究の最近の動向（Recent progress in researches on phase transitions and critical behavior for Ising ferromagnet）.

·    MSJ Fall Meeting (September 11–14). Yamagata University, Japan.

 

3.      Critical behavior for oriented percolation: From a mathematically rigorous standpoint.

·    Summer School in Mathematical Physics (August 25–27). The University of Tokyo, Japan.

 

4.      The lace expansion for self-avoiding walk and percolation on the BCC lattice.

·    Seminar on Probability (July 18). Osaka University, Japan.

 

5.      Mean-field bound on the 1-arm exponent for high-dimensional Ising ferromagnets.

·    Physical and Mathematical Approaches to Interacting Particle Systems – In Honer of 70th Birthday of Herbert Spohn (January 11–12). Tokyo Institute of Technology, Japan.

 

Year 2016

 

1.      Mean-field bound on the 1-arm exponent for Ising ferromagnets in high dimensions.

·    3rd Workshop on Probability Theory and its Applications (December 13–16). Korea Institute for Advanced Study, South Korea.

·    2016 TMS Annual Meeting (December 11–12). National Dong Hwa University, Taiwan.

·    15th Stochastic Analysis on Large Scale Interacting Systems (November 2–4). The University of Tokyo, Japan.

·    International Conference on Probability Theory and Statistical Physics (March 25–27). NYU Shanghai, China.

·    2016 Spring Probability Workshop (March 7–9). Academia Sinica, Taiwan.

 

2.      The lace expansion for the nearest-neighbor models on the BCC lattice.

·    MSJ Fall Meeting (September 15–18). Kansai University, Japan.

·    The BIRS Workshop “Random Structures in High Dimensions” (June 26–July 1). Casa Matemática Oaxaca, Mexico.

 

3.      Rigorous analysis of critical behavior for statistical-mechanical models of polymers.

·    Hokkaido Young Polymer Scientists Workshop (September 2–3). Jozankei View Hotel, Japan.

 

4.      Random walk and its dimensional dependence.

·    Science Globe for New Students (June 15). Hokkaido University, Japan.

 

5.      Self-avoiding walk on random conductors.

·    The IMI Workshop “Mathematical Quantum Field Theory and Related Topics” (June 6–8). Kyushu University, Japan.

·    NCU Probability Seminar (March 11). National Central University, Taiwan.

·    NZ Probability Workshop 2016 (January 3–9). Scenic Hotel Bay of Islands, New Zealand.

 

Year 2015

 

1.      Critical points for self-avoiding walk on random conductors.

·    Summer School on Dirichlet Form and Stochastic Analysis (August 24–28). Kansai University, Japan.

 

2.      Critical two-point function for the φ4 model in high dimensions.

·    IMS Workshop on Stochastic Processes in Random Media (May 4–15). The Institute for Mathematical Sciences, Singapore.

·    Kyushu Probability Seminar (April 24). Kyushu University, Japan.

 

3.      Critical correlation in high dimensions for long-range models with power-law couplings.

·    The IHP Workshop “Spin Glasses, Random Graphs and Percolation” (February 16–20). The Institut Henri Poincaré, France.

·    Niigata Probability Workshop (January 22–23). Niigata University, Japan.

 

Year 2014

 

1.     General idea and recent results on the lace expansion.

·    The International Mathematical Meeting and the Annual Meeting of the TMS (December 6–7). National Cheng Kung University, Taiwan.

 

2.     Critical two-point function for the lattice φ4 model in dimensions d > 4.

·    UBC Probability Seminar (September 10). The University of British Columbia, Canada.

·    Sapporo Mathematical Physics Workshop (September 1–2). Hokkaido University, Japan.

 

3.     An attempt to prove mean-field behavior for percolation in 7 dimensions.

·    NZ Probability Workshop (January 6–10). The Distinction Te Anau Hotel, New Zealand.

 

Year 2013

 

1.      An attempt to prove mean-field behavior for percolation in 7 dimensions.

·    Niigata Probability Workshop (December 5–6). Niigata University, Japan.

 

2.     The lace expansion: rigorous analysis for critical phenomena.

·    The Japanese Society for Mathematical Biology Fall Meeting (September 11–13). Shizuoka University, Japan.

 

3.      Recent progress in the lace expansion.

·    New Directions in Probability (May 30–June 4). ISI Bangalore, India.

 

4.      Application of the lace expansion to the φ4 model.

·    2013 NCTS Workshop on Stochastic Processes and Related Topics (March 14–15). National Tsing Hua University, Taiwan.

 

Year 2012

 

1.      Application of the lace expansion to the φ4 model.

·    The Annual Probability Symposium (December 18–21). Kyoto University, Japan.

·    The MFO Workshop “Scaling Limits in Models of Statistical Mechanics” (September 9–15). The Mathematisches Forschungsinstitut Oberwolfach, Germany.

·    The Modena Workshop “Disorder in Probability and Statistical Mechanics” (June 25–29). Università di Modena e Reggio Emilia, Italy.

 

2.      Asymptotic behavior of the critical two-point functions for statistical-mechanical models with power-law decaying potentials.

·    VU Probability Seminar (March 19). Vrije Universiteit Amsterdam, the Netherlands.

·    New Zealand Probability Workshop & Australia and New Zealand Applied Probability Workshop (January 23–27). The University of Auckland, New Zealand.

 

Year 2011

 

1.      Asymptotic behavior in Zd of the critical two-point functions for long-range statistical-mechanical models in high dimensions.

·    The 7th HU and SNU Symposium on Mathematics “Recent Developments in Mathematical Analysis and Related Fields” (November 16–17). Seoul National University, South Korea.

 

2.      Rigorous analyses for critical phenomena.

·    The Seminar for Active Researchers “Let’s Enjoy Mathematical Sciences” (September 5–6). Hokkaido University, Japan.

 

3.      Mathematical analysis for critical phenomena.

·    The Kinosaki Seminar (February 14–18). Kinosaki Community Center, Japan.

 

4.      Application of the lace expansion to the φ4 model.

·    The NYUADI workshop “Probability Theory, Statistical Physics and Applications” (January 16–20). NYU Abu Dhabi, UAE.

 

Year 2010

 

1.      Asymptotic behavior in Zd of the critical two-point functions for long-range statistical-mechanical models in high dimensions.

·    The Annual Probability Symposium (December 20–23). Kyoto University, Japan.

·    Probability Seminar (November 24). Academia Sinica, Taiwan.

 

2.      Asymptotic behavior of the gyration radius for long-range self-avoiding walk and long-range oriented percolation.

·    NCTS & CMMSC Seminar on Probability and Related Topics (November 26). Mathematics Division of National Center for Theoretical Sciences, Taiwan.

 

3.      Crash course for mathematical biologists on the lace expansion for the contact process.

·    Mathematical Biology Seminar (September 29). Hokkaido University, Japan.

 

4.      Lace expansion in the past and future.

·    SPA Osaka 2010 (September 6–10). Senri Life Science Center, Japan.

 

5.      Further development of the lace expansion.

·    DCS Seminar (July 28). Hokkaido University, Japan.

·    Shinshu Mathematical Physics Seminar (July 27). Shinshu University, Japan.

 

6.      The lace expansion for lattice models in high dimensions.

·    The 11th Northeastern Symposium on Mathematical Analysis (February 22–23). Hokkaido University, Japan.

 

Year 2009

 

1.      Asymptotic behavior in Zd of the critical two-point functions for long-range statistical-mechanical models in high dimensions.

·    The IHP Workshop “Above the Critical Dimension” (December 7–11). The Institut Henri Poincaré, France.

 

2.      Asymptotic behavior of the gyration radius for long-range self-avoiding walk and long-range oriented percolation.

·    Probability Seminar (November 9). Academia Sinica, Taiwan.

·    8th Stochastic Analysis on Large-scale Interacting Systems (October 7–9). The University of Tokyo, Japan.

·    The RIMS Workshop “Applications of RG Methods in Mathematical Sciences” (September 9–11). Kyoto University, Japan.

·    The MFO Workshop “Scaling Limits in Models of Statistical Mechanics” (August 16–22). The Mathematisches Forschungsinstitut Oberwolfach, Germany.

 

3.      Critical behavior and limit theorems for long-range oriented percolation in high dimensions.

·    NUS Probability Seminar (March 12). National University of Singapore, Singapore.

·    The GCOE Conference “Random Processes and Systems” (February 16–19). Kyoto University, Japan.

 

4.      Scaling limit for the critical contact process in high dimensions.

·    Yokokoku Probability Seminar (February 3). Yokohama National University, Japan.

 

Year 2008

 

1.      Critical behavior and limit theorems for long-range oriented percolation in high dimensions.

·    The Annual Probability Symposium (December 16–19). Tokyo Institute of Technology, Japan.

 

2.      Scaling limit for the critical contact process in high dimensions.

·    The Kyoto Workshop “Stochastic Problems and Nonlinear PDEs” (December 1–2). Kyoto University, Japan.

 

3.      Critical behavior and limit theorems for self-avoiding walk in high dimensions: The lace-expansion approach.

·    GCOE Seminar Series (November 11–13). Kyoto University, Japan.

 

4.      Mean-field critical behavior for the ferromagnetic Ising model in high dimensions: The lace-expansion approach.

·    Kanazawa Probability Seminar Series (August 5–7). Kanazawa University, Japan.

 

5.      Scaling limit for the critical contact process in high dimensions.

·    Hokkaido PDE Seminar (July 7). Hokkaido University, Japan.

 

6.      Towards rigorous analysis of critical phenomena for the contact process.

·    Math Colloquium (April 30). Hokkaido University, Japan.

·    The 1st Hokkaido University Tenure-track Symposium (April 1). Hokkaido University, Japan.

 

Year 2007

 

1.      Limit theorem for the contact-process r-point function.

·    The Annual Probability Symposium (December 11–14). Kumamoto University, Japan.

 

2.      Critical behavior for long-range statistical-mechanical models.

·    The Mathematical Society of Japan Fall Meeting (September 21–24). Tohoku University, Japan.

 

3.      Critical behavior and the limit distribution for long-range oriented percolation.

·    The London Mathematical Society Durham Symposium “Recent Developments in Random Walks” (July 2–12). The University of Durham, UK.

·    Seminar on Discrete and Applicable Mathematics (May 10). London School of Economics and Political Science, UK.

 

Year 2006

 

1.      Convergence of the finite-range contact process at criticality to super-Brownian motion above the upper-critical dimension.

·    RCUK Seminar (October 16). The University of Bath, UK.

 

2.      Asymptotic behavior of the critical two-point function for Ising ferromagnets above four dimensions.

·    The LMS Workshop “Analysis and Stochastics of Growth Processes” (September 11–15). The University of Bath, UK.

·    The MFO Workshop “Spatial Random Processes and Statistical Mechanics” (September 3–9). The Mathematisches Forschungsinstitut Oberwolfach, Germany.

 

3.      Lace expansion for the Ising model.

·    The 9th International Vilnius Conference on Probability Theory and Mathematical Statistics (June 25–30). Vilnius Gediminas Technical University, Lithuania.

·    The PIMS Lecture Series (May 25–June 14). The University of British Columbia, Canada.

·    Berliner Kolloquium (January 25). TU Berlin, Germany.

 

4.      Memory-2 random-walk models and the senile reinforced random walk.

·    Bath Probability Seminar (May 4). The University of Bath, UK.

·    VU Probability Seminar (March 15). Vrije Universiteit Amsterdam, the Netherlands.

·    EPPS (March 9). EURANDOM, the Netherlands.

 

Year 2005

 

1.      Lace expansion for the Ising model.

·    The Annual Probability Symposium (December 19–22), Kyoto University, Japan.

·    The BIRS Workshop “Critical Scaling for Polymers and Percolation” (May 28–June 2). The Banff Center, Canada.

 

2.      Introduction to the lace expansion.

·    Institute of Mathematics Seminar Series (November 28 and December 13). Academia Sinica, Taiwan.

·    Mark Kac Seminar (September 30). Universiteit Utrecht, the Netherlands.

 

3.      Lace-expansion analysis for the mean-field behavior for the Ising model.

·    The COE Seminar “Mathematics in Mathematical Physics” (November 24–26). Keio University, Japan.

 

Year 2004

 

1.      Critical points for spread-out self-avoiding walk, percolation and the contact process above the upper critical dimensions.

·    The Annual Probability Symposium (December 7–10). Nagoya University, Japan.

 

2.      Mean-field behavior for the survival probability and the percolation point-to-surface connectivity.

·    Courant Probability and Mathematical Physics Seminar (June 29). New York University, USA.

·    YEP Workshop (March 29–April 2). EURANDOM, the Netherlands.

 

Year 2003

 

1.      Gaussian and super-Brownian motion limits for the finite-range critical contact process in high dimensions.

·    Kansai Probability Seminar (December 19), Kyoto University, Japan.

 

2.      High-dimensional graphical networks of self-avoiding walks.

·    The Annual Probability Symposium (December 10–13). Kanazawa University, Japan.

 

3.      Critical phenomena for infection spreading.

·    EPS Seminar (May 15). EURANDOM, the Netherlands.

 

4.      Estimates of the critical point for the spread-out contact process.

·    CWI Spatial Stochastic Seminar (March 11). Centrum Wiskunde & Informatica, the Netherlands.

 

5.      Critical behavior for the contact process.

·    Mark Kac Seminar (February 7). Universiteit Utrecht, the Netherlands.

 

Year 2002

 

1.      Estimates of the critical point for the contact process.

·    UBC Probability Seminar (December 11). The University of British Columbia, Canada.

 

2.      SBM-limit for the critical contact process with finite range.

·    The 4th International Symposium on Probability and its Applications (July 31–August 2). The Banff Center, Canada.

 

3.      High-dimensional graphical networks of self-avoiding walks.

·    The Canadian Mathematical Society Summer Meeting (June 15–17). Université Laval, Canada.

 

Year 2001

 

1.      Mean-field critical behavior for the contact process.

·    Probability Seminar (December 10). Cornell University, USA.

 

2.      Hyperscaling inequalities for contact processes.

·    UBC Probability Seminar (October 3). The University of British Columbia, Canada.

 

3.      Mean-field critical behavior for the contact process.

·    UBC Probability Seminar (September 26). The University of British Columbia, Canada.

 

4.      Mean-field critical behavior for contact processes.

·    UBC Probability Seminar (February 28). The University of British Columbia, Canada.

 

Year 2000

 

1.      Mean-field critical behavior for the contact process.

·    The TITech Workshop “Recent Topics on Stochastic Interacting Systems” (January 13–14). Tokyo Institute of Technology, Japan.

 

Year 1999

 

1.      Critical phenomena for the contact process.

·    The Annual Probability Symposium “Stochastic Processes and their Related Problems” (December 14–17). Nagoya University, Japan.