An expository survey of degree of irrationality, covering gonality, and related invariants, organized by the Kodaira-Enriques classification, with many open problems.
Stabilized measures of association: comparing the birational geometry of varieties having different dimensions
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abstract
We extend some of the measures of association defined by Lazarsfeld and Martin, obtaining useful invariants to compare the birational geometry of two varieties having different dimensions. We explore such invariants providing examples and computing them in some cases of interest.
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math.AG 1years
2025 1verdicts
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A primer on measures of irrationality
An expository survey of degree of irrationality, covering gonality, and related invariants, organized by the Kodaira-Enriques classification, with many open problems.