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Millennium Prize Problems Lecture – Pierre Deligne: What is the Hodge conjecture?

https://cmsa.fas.harvard.edu/event/clay_111225/

Date: November 13, 2025 (Beijing Time)

Time: 6:00–7:00 am (Beijing Time)

Location: Harvard Science Center Hall D, 1 Oxford St., Cambridge MA

Speaker: Pierre Deligne, Institute for Advanced Study

Title: What is the Hodge conjecture?

Abstract: The Hodge conjecture is about projective non-singular complex algebraic varieties. It characterizes the cohomology classes coming from algebraic cycles. I will explain these terms, tell why the conjecture is so hard to attack, and why we care.

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Read more about the Hodge Conjecture at the Clay Math website.

Organizers: Martin Bridson, Clay Mathematics Institute | Dan Freed, Harvard University and CMSA | Mike Hopkins, Harvard University