On January 5, 2023 at the Faculty of Mathematics and Statistics, Ton Duc Thang University, a seminar on optimization was held.  Associate Prof. Radek Cibulka (from Czech Republic) presented the talk "On ranges of non-smooth and set-valued mappings". Associate Prof. Cibulka is still young but has many publications in top journals.

 There were also the attendance of graduate students and lecturers from other universities such as: University of Science and Technology, HCMC University of Science,  Kien Giang University, Soc Trang High School, Tra Vinh University, HCMC University of Food Industry, FPT University...