Craig–van Ittersum–Ono conjecture on prime-detecting quasi-modular forms

Let q=e2πiτq=e^{2\pi i\tau}, and let Ω\Omega be the subset of the graded ring of integer-weight quasi-modular forms of full level consisting of forms

f(τ)=n0cf(n)qnf(\tau)=\sum_{n\geqslant 0}c_f(n)q^n

whose Fourier coefficients cf(n)c_f(n) strongly detect the primes. Let E\mathcal{E} be the vector space of quasi-modular Eisenstein series, spanned by Eisenstein series and their derivatives. Craig–van Ittersum–Ono conjecture. With this notation,

ΩE.\Omega\subset\mathcal{E}.

The conjecture asserts that every quasi-modular form whose Fourier coefficients strongly detect the primes is a quasi-modular Eisenstein series. The source provides no resolution, so the conjecture remains open.

Sources & referencesView supporting material

Primary source

Ben Kane, Krishnarjun Krishnamoorthy and Yuk-Kam Lau, “Prime detecting quasi-modular forms in higher level”, arXiv:2511.04030 (2026).

Progress summary

Never refreshed

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.