INTERNATIONAL CONFERENCE ON HOLOGRAPHY, STRING THEORY and DISCRETE APPROACH in HANOI, VIETNAM     DATE and VENUE ◦ 3-6 August, 2020 (6th is for a free day for walking or discussion) Probability date is changed to 5-7 cannot be excluded, not buy the airplane ticket until I announce in June. ◦ Phenikaa University, Hanoi,… Đọc thêm