Arational blowdown surgery on 4-manifolds
Giáo sư Jongil Park, Department of Mathematical Sciences, Seoul National University, Seoul, South Korea

Thời gian: bắt đầu từ 9h30, ngày 16/12/2022 (thứ Sáu)

Địa điểm: Hội trường Hoàng Tụy, Tầng 2, Nhà A6, Viện Toán học

Tóm tắt: Since gauge theory was introduced in 1982, topologists and geometers working on 4-manifolds theory have developed various techniques and surgeries and they have obtained many fruitful and remarkable results on 4-manifolds in the last 40 years. Among them, a rational blowdown surgery technique initially introduced by R. Fintushel and R. Stern and later generalized by J. Park turned out to be one of the simple but powerful techniques to construct a new family of 4-manifolds in various categories. It also plays an important role in Q-Gorenstein smoothings and symplectic fillings of the link of surface singularities. In this talk, I’d like to briefly review what we have obtained in 4-manifolds topology by using a rational blowdown surgery.