This video contains two seminars. This seminar finishes at 1:03.
If a Calabi-Yau threefold varies in a one-parameter family and aquires some double points, a small resolution will produce a rigid space. The local monodromy at such a ‘conifold transition’ is of infinite order. In the talk I report on some work done with S. Cynk (Krakow), which shows similar transitions to rigid Calabi-Yaus are possible with monodromy of finite order, in sharp distinction to what can happen for K3 surfaces.
This video is part of the 3CinG annual meeting that took place in Warwick in September 2021.
