2025年10月17日，荷兰阿姆斯特丹大学Gerard van der Geer教授应邀作线下学术报告，报告题目为“Geometric constructions of modular forms”。更多信息，请见海报。

Gerard van der Geer is an emeritus professor at the University of Amsterdam. He works in algebraic geometry and arithmetic geometry with emphasis on moduli spaces and modular forms. He worked on Hilbert modular surfaces, curves over finite fields, cycle classes on moduli of abelian varieties and modular forms. He has published over 70 research papers in refereed journals.