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Sz-Sheng Wang (Academia Sinica)
2024-07-19  10:30 - 11:30
Room 202, Astronomy and Mathematics Building

An extremal transition is called Type II if the involved crepant resolution contracts an irreducible divisor to an isolated singularity. In this talk, I will compare the genus-zero Gromov--Witten invariants of Calabi--Yau 3-folds under Type II transitions with an isolated complete intersection singularity, in an analogue way as for the well known formula under conifold transitions. If time permits I shall discuss the other extremal transitions. This is joint work with Shuang-Yen Lee and Chin-Lung Wang.