Typicality of non-equidistribution for bounded p-divisibility

Determine whether, for curves over discretely valued fields and sequences of primes with bounded p-divisibility, the non-equidistribution behavior exhibited by the constructed supersingular examples is typical.

Background

The paper proves equidistribution for sequences of modular curves Y0(an)Y_0(a_n) whose levels have pp-adic valuations tending to infinity. It also constructs a family of sequences of primes anpa_n\neq p, for which the levels have bounded pp-divisibility, and shows that equidistribution fails because a positive proportion of intersection points remains concentrated near a supersingular point.

After presenting this counterexample, the paper states that the observed failure of equidistribution is believed to be typical for curves defined over discretely valued fields and sequences of levels with bounded pp-divisibility. Establishing or disproving that typicality is therefore left unresolved.

References

This behaviour is believed to be typical for curves (at least defined over discretely valued fields) and sequences $a_n$ with bounded $p$-divisibility.

$p$-adic Equidistribution of Special Loci in a Product of Modular Curves  (2608.23052 - Townsend, 24 Aug 2026) in Section 7.1, “Non-equidistribution For a Sequence $a_n$ Coprime to $p$”