Vol. 15, No. 8, 2021

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Manin's conjecture and the Fujita invariant of finite covers

Akash Kumar Sengupta

Vol. 15 (2021), No. 8, 2071–2087

We prove a conjecture of Lehmann and Tanimoto about the behaviour of the Fujita invariant (or a-constant appearing in Manin’s conjecture) under pull-back to generically finite covers. As a consequence we obtain results about geometric consistency of Manin’s conjecture.

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Manin's conjecture, Fujita invariant
Mathematical Subject Classification
Primary: 14E30, 14G05
Received: 19 October 2020
Revised: 12 January 2021
Accepted: 17 February 2021
Published: 10 November 2021
Akash Kumar Sengupta
Department of Mathematics
Columbia University
New York, NY
United States