On motivic cohomology of singular algebraic schemes
报告人：Jinhyun Park (KAIST)
时间：2021-10-25 13:00-14:00
地点：online
Join Zoom Meeting：
https://zoom.com.cn/j/82069455808?pwd=ak9jR2RZcGNiTis1aFFwWlo5TWNYdz09
Meeting ID：820 6945 5808
Passcode：352729
Abstract: Motivic cohomology is a hypothetical cohomology theory for algebraic schemes, including algebraic varieties, that can be seen as the counterpart in the domain of algebraic geometry, to the singular cohomology of topology. It has been constructed for smooth varieties, but for the singular ones the situation was not clear.
In this talk, I will sketch some recent attempts of mine to provide an algebraic-cycle-based model for the motivic cohomology of singular algebraic schemes, using formal schemes.
As this is very complicated, in the talk I will concentrate more on the concrete case of the fat points, where the situation is simpler, but not still trivial.
