Numerical methods for spectral problems: theory and applications (NMSP2025B)

12 - 15 December, 2025     URABANDAI, FUKUSHIMA

December 12, 2025

   December 12 18:00-19:00   Room Suzuran
18:00-19:00 Reception

December 13, 2025

A1   Session 1 December 13 9:00-11:30   Room Suzuran
9:00 - 9:30 Guaranteed computation for eigenvalue and eigenfunction   abstract
Xuefeng Liu (Tokyo Woman's Christian University)  
9:30 - 10:00 Two extremum problems for Neumann eigenvalues   abstract
Lorenzo Cavallina (Tohoku University)  
10:00 - 10:15 Break time
10:15 - 10:45 TBA   abstract
Dorin Bucur (Université Savoie Mont Blanc)  
10:45 - 11:15 A remark on $L^2$-error estimations for FEM solutions on non-convex domains   abstract
Kenta Kobayashi (一橋大学)  
A2   Session 2 December 13 13:30-14:30   Room Suzuran
13:30 - 14:00 TBA   abstract
Hengguang Li (Wayne State University)  
14:00 - 14:30 TBA   abstract
Takuya Tsuchiya (Osaka-Univesity)  
F1   Free Discussion 1 December 13 15:00-17:00   Room Suzuran
15:00-17:00 Free Discussion and Open Problems

December 14, 2025

A3   Session 3 December 14 9:00-11:30   Room Suzuran
9:00 - 9:30 A new universal inequality for Neumann eigenvalues of the Laplacian on a planar convex domain   abstract
Kei Funano (Tohoku university)  
9:30 - 10:00 Spectral gaps of clustered and diverging eigenvalues on triangles   abstract
Ryoki Endo (Niigata University)  
10:00 - 10:30 Verified eigenvalue solver for the generalized eigenproblem $A x = \lambda B x$.   abstract
Yuka Yanagisawa (Gakusyuin-University)  
F2   Free Discussion December 14 13:30-14:30   Room Suzuran
13:30-14:30 Free Discussion and Open Problems

December 15, 2025

C   Free Discussion 3 December 15 9:00-11:30   Room Suzuran
9:00-11:30 Free Discussion and Closing