![]() | PhD Student Arrived at Stony Brook in 2019 Office: Math Tower 2-122 Email: Conghan.Dong@stonybrook.edu Courses: ∙ MAT 131 R26 - WF 11:45am - 12:40pm ∙ MAT 515 Grader Office Hours: ∙ F 1:00pm-2:00pm ![]() ∙ F 2:00pm-3:00pm ![]() ∙ also by appointment Math Learning Center Hours: (in Math Tower S-235 or online) ∙ F 4:00pm-5:00pm ![]() Advisor: Xiuxiong Chen |