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math.AG2026
Effective characterization of semi-abelian varieties
Jefferson Baudin, Sofia Tirabassi
We obtain effective characterizations of complex semi-abelian varieties in arbitrary dimension in terms of logarithmic irregularity and the first two logarithmic plurigenera, among…
math.AG2026
On the global and local geometry of quasi--split varieties with trivial canonical bundle
Jefferson Baudin
We solve certain questions related to the geometry and singularities of quasi--split varieties with trivial canonical bundle. First, we prove that regular quasi--spl…