Converse to derived isogeny implying quasi-liftable isogeny for abelian surfaces
Let and be abelian surfaces over with finite height and . They are quasi-liftably isogenous if they are isogenous through suitable liftings to characteristic zero. Converse conjecture. If and are quasi-liftable isogenous, then they are derived isogenous; equivalently, under these assumptions, and are derived isogenous if and only if they are quasi-liftable isogenous.
The forward implication is established in the cited theorem, and the authors state that they believe the converse also holds. Thus the converse remains open.
References
Primary source
Zhiyuan Li and Haitao Zou, “Derived isogenies and isogenies for abelian surfaces”, arXiv:2108.08710 (2025).
Progress summary
Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.
Solutions 0
No solutions have been posted yet.