University of Cambridge > Talks.cam > Algebraic Geometry Seminar > About the categorical strong rationality conjecture for flopping curves

  Browse A-Z

Log in

University Account External (via Google)

🔐 Log In

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

ℹī¸ Information

About the categorical strong rationality conjecture for flopping curves

Download to your calendar using vCal

If you have a question about this talk, please contact Dhruv Ranganathan.

The strong rationality conjecture of Pandharipande—Thomas is the PT version of the Gopakumar—Vafa formula for Gromov—Witten invariants. This has been reformulated by Toda as the independence of the count of one dimensional sheaves from their Euler characteristic. I will try to motivate why, in order to prove this independence, it might be convenient to work with cohomological Donaldson—Thomas invariants. In the last part of the talk I will concentrate on the case of flopping curves, state the cohomological version of the conjecture, and give an outline of the (almost completed) proof we give. This is based on a joint work in progress with S. Beentjes and B. Davison.

This talk is part of the Algebraic Geometry Seminar series.

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

Seminar time is 1pm BST in Room FW 11, Willam Gates Hall. Zoom link: https://cl-cam-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&from=addon Cambridge University Engineering Department LR6 Institute for Manufacturing, Cambridge

Other talks

Group Work Title and abstract tba Social values in scientific information: value plurality and the democratic view How Far Can Good Go Without God? The Limits of a Naturalistic Ethic Title to be confirmed Title to be confirmed
 

Š 2006-2025 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity