| PhD Student Arrived at Stony Brook in 2022 Office: Math Tower S-240A Email: yichen.cheng@stonybrook.edu Courses: ∙ MAT 303 R01 - F 1:00 - 1:53pm ∙ MAT 303 R04 - Tu 5:30 - 6:23pm Office Hours: ∙ Tu 4:30pm-5:30pm Math Learning Center Hours: (in Math Tower S-235 or online) ∙ Tu 3:30pm-4:30pm ∙ Tu 6:30pm-7:30pm |