The Riemannian and Complex Geometry is one of the group seminar at Korea Institute for Advanced Study (KIAS). We would like to discover developable research area, and are expected to develop not only personal academic progress, but also a great deal of mathematical research in various fields by communicating with mathematicians. This seminar aims to understand the research area of each member. Furthermore, we will invite mathematicians who study geometry or various fields to discuss the research area and to share their experiences.