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Dates: March 20 (afternoon) – March 22 (morning), 2026
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Venue: Hotel Stay Inn
Nanokamachi, 5th Floor Conference Room
2-7-10 Nanokamachi, Yamagata City, Yamagata 990-0042,
Japan
The workshop will be held in
person only. No online streaming will be provided. Participants who
require accommodation should make their own reservations.
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Registration
(Deadline: March 15, 2026):
Please register using the
registration form. Because the venue has a limited capacity, registration
may close once the limit is reached.
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Invited
Speakers:
Da-jun Zhang (Shanghai Univ., online), Cheng Zhang
(Shanghai Univ., online), Daisuke Takahashi (Waseda
Univ.), Yasuhiro Ohta (Kobe Univ.), Atsushi Nobe (Waseda
Univ.), Hidetomo Nagai (Tokai Univ.), Alexander
Stokes (Waseda Univ.), Nobutaka Nakazono
(Tokyo Univ. of Agriculture and Technology, online), Linyu
Peng (Keio Univ.), Shangshuai Li (Nagoya Univ.),
Takeo Kojima (Yamagata Univ.), Wookyung Kim (Univ. of
Tokyo), Kayo Kinjo (Saitama Univ. ), Yuta Tanaka, Ryosuke Naganuma (Waseda Univ.), Allan Gerrard (Japan Women’s Univ.)
(Subject to change)
13:30 Doors
open
14:20–15:00 Yuta Tanaka Recurrence equations
with variable order and period: Exploration and analysis of their mathematical
structures
15:00–15:40 Ryosuke Naganuma (Waseda
University) Construction of multi-lump solutions of the
elliptic two-dimensional Toda lattice equation and their wave pattern
15:50–16:30 Wookyung Kim (University of Tokyo) Integrable
deformations of affine type A cluster maps associated with discrete sine–Gordon
equations and discrete q-Painlevé VI
16:30–17:10
Atsushi Nobe (Waseda University) A one-parameter family of
integrable differential equations arising from the SIR model with vaccination
18:00
Discussion
9:50–10:30 Da-jun Zhang
(Shanghai University, online)
Direct linearization
formulation of the ABS equations
10:40–11:20 Nobutaka Nakazono (Tokyo University of Agriculture and Technology,
online)
Exact
solutions to autonomous partial difference equations via the Painlevé III and VI equations and the Garnier system in two
variables
11:30–12:10 Cheng Zhang (Shanghai
University, online) Lattice potential Boussinesq equation: Consistency check and
Miura-transformation
13:30–14:10 Yasuhiro Ohta (Kobe University) Cayley
formula, Toda molecule equation and their Pfaffian analogues
14:10–14:50 Alexander Stokes (Waseda
University) Painlevé Equations with constraints: their geometry and their symmetry groups
15:00–15:40 Linyu Peng (Keio
University) Integrable lattice systems with PGL(3) symmetry from
spectral factorization
15:40–16:20 Takeo Kojima (Yamagata University) Construction of integrals of
motion for the deformed \(W\)-algebra \(W_{q,t}(D)\)
16:30–17:10
Daisuke Takahashi (Waseda University) Three-dimensional fundamental diagram
18:00
Discussion & reception
9:40–10:20 Shangshuai Li (Nagoya University) On soliton-preserving anti-self-dual
Yang-Mills reductions
10:20–11:00 Hidetomo Nagai (Tokai University) Ultradiscretization of
a Mathematical Model in Social Dynamics
11:10–11:50 Allan Gerrard (Japan Women’s University) Reflections on the Heisenberg model
11:50–12:30 Kayo Kinjo (Saitama University) Koopman
Data Analysis from the Perspective of Integrable Systems
This workshop is supported by the JSPS Bilateral Joint
Research Project (Project No. 20247414) “Development and Applications of
Innovative Mathematical Methods in Discrete Integrable Systems,” and by JSPS
KAKENHI Grant-in-Aid for Scientific Research (C) 22K03441 “Development,
Advancement, and Applications of Innovative Mathematical Techniques Based on
Integrable Systems Theory.”