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math.AG2022
Fano hypersurfaces with no finite order birational automorphisms
Nathan Chen, Lena Ji, David Stapleton
We use the specialization homomorphism for the birational automorphism group to study finite order birational automorphisms. For a family of varieties over a DVR, we prove that a b…
math.AG2022★ 2 cited
Rationality of real conic bundles with quartic discriminant curve
Lena Ji, Mattie Ji
We study real double covers of branched over a -divisor, which have the structure of a conic bundle threefold with smooth quartic discriminant…
math.AG2022★ 2 cited
Curve classes on conic bundle threefolds and applications to rationality
Sarah Frei, Lena Ji, Soumya Sankar +2
We undertake a study of conic bundle threefolds over geometrically rational surfaces whose associated discriminant covers are smooth and geo…