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Vinay Kumaraswamy: Counting rational points on cubic hypersurfaces

Time: Thu 2023-10-26 13.15 - 14.15

Location: KTH, 3418

Participating: Vinay Kumaraswamy (KTH)

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Let X be a cubic hypersurface cut out by a non-degenerate rational cubic form in n variables. If n is at least 14, then Heath-Brown has shown that X has at least one non-trivial rational point. By a result of Kollár, this implies that there are infinitely many rational points on X. In this talk, I will discuss the problem of obtaining quantitative lower bounds for the number of rational points of bounded height on X.