Stoll's finite-subscheme conjecture for Chabauty–Coleman loci
Stoll's finite-subscheme conjecture for Chabauty–Coleman loci
Let ) be a smooth projective curve of genus whose Jacobian has Mordell–Weil rank at most . Let denote the abelianisation of the fundamental group of . Stoll's conjecture. There is a finite subscheme , defined over , such that
for all primes in a set of Dirichlet density . Because is finite and defined over , consists only of algebraic points. The conjecture strengthens the expectation that the abelian non-abelian Chabauty loci contain only algebraic points by requiring one finite subscheme, independent of , to interpolate them; the source notes that its formulation differs slightly from Stoll's original result.
Sources & referencesView supporting material
Primary source
L. Alexander Betts, “On a non-abelian analogue of a conjecture of Michael Stoll”, arXiv:2508.19947 (2025).
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