Speaker: Yuk-Kam Lau, The University of Hong Kong Title: The signs of the Fourier coeffients of newforms Venue: B1044 Time: 9:45-10:45, 24 Sept. Abstract: Given an elliptic modular newform, a central problem is to investigate its normalized Fourier coefficients. There are a couple of interesting results on their signs by various writers. Our aim is to give a survey on these works. Speaker: Jie Wu, CNRS, Universit e de Lorraine, France Title: On the arcsin law of divisors Venue: B1044 Time: 11:00-12:00, 24 Sept. Abstract: In this talk, we shall present a general result on the Selberg-Delange method in short intervals. As an application, we generalize Deshouiller-Dress-Tenenbaum's arcsin law on divisors to the short interval case.     This is joint work with Zhen Cui.