SISSA Algebraic geometry seminars in presence and online

[Michele Graffeo]

Next seminar, Friday 29/04/2022 at 4:30pm, room Boris Dubrovin 136

Speaker: Dmitrii Rachenkov (SISSA)

Title:  Higher direct images for resolutions of normal surface singularities

Abstract: For morphism of surfaces, that is in our context a resolution of normal singularity, there is a pushforward in the categories of coherent sheaves. The right derived functors of the pushforward, that are also called higher direct images, take part in the definition of rational singularities: the first derived functor should be equal to zero.
In the talk I am going to discuss some properties of higher direct images for the surface case and calculate one example.


You can find more information about the seminars of the algebraic geometry group at the following links.
https://graffeomichele.github.io/seminari.html
https://www.math.sissa.it/content/algebraic-geometry-seminar-20212022

Join Zoom Meeting
https://sissa-it.zoom.us/j/83917587333?pwd=amVZSW54bkROS2U0Ly9HbVJYK3c2QT09

Meeting ID: 839 1758 7333
Passcode: 712636