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math.NT2026
Isogeny rigidity under algebraic group actions and finite translation orbits
Paolo Dolce, Francesco Tropeano, Ekaterina Amerik
We study finite orbits generated by fibrewise translations on varieties carrying two abelian fibrations. Under natural dominance and generation hypotheses, non-isotriviality of the…
math.NT2026
Degeneracy loci and unlikely intersections in abelian schemes
Fabrizio Barroero, Laura Capuano, Tangli Ge +1
Let be an abelian scheme over a normal quasi-projective variety over a number field, and let be a positive-dimensional subvarie…