Bahar Mathematics meeting aims to serve a series of seminars adressed to the mathematics students. Our seventh meeting is dedicated to the memory of Cahit Arf and will be held between 29 February - 1 March 2020 at the Mathematics Department of Boğaziçi University, İstanbul. The event is academically oriented and the seminars will be given by mathematicians and students of mathematics. Participation is accessible for anyone via registration and students can apply to give a talk. Student applications for speaking will be evaluated by a jury upon its topic and content. A slot will be assigned for the suitable ones.