Speaker:: Professor Angel V. Kumchev Venue: B1032 Time: 15:30-16:30, 16:40-17:40.   June 29, 30, July 1 Title: The role of sieves and exponential sums in the Waring-Goldbach problem Abstract:In this series of lectures, we will discuss the role of sieve methods in various variants of the Waring-Goldbach problem and how that involvement has evolved over time. The talks will be a kind of fusion,   with some changes and additions, of the lectures I gave in Weihai in 2011 and Beijing in 2014.