Everyone those who want to present open problems will talk. (25 minutes/each.)

Speakers:

• 14:00-14:25, Daisuke Suyama: Explicit bases for the extended Shi and Catalan arrangements.
• 14:30-14:55, Shuhei Tsujie: Modular joins of free hyperplane arrangements.
• 15:00-15:25, Ye Liu: Garside groups and Artin groups.
• 15:30-15:55, Delphine Pol: Subspace arrangements and Solomon Terao formula.
• 16:00-16:25, Tan Nhat Tran: Abelian Lie group arrangements and $G$-Tutte polynomials.
• 16:30-16:55, Behnaz Pahlousay: open problem of domination number in cartesian product of graphs.
• 17:00-17:25, Masahiko Yoshinaga: Topology of graphical configuration space.
• 17:30-17:55, Takuro Abe (read by Yoshinaga): Universal derivation, ST algebra, Lefschetz property.

Dinner: Suyama, Tsujie, Terao, Oita, Ohmoto, Pol, Liu, Guo, Tan, Yoshinaga,