The Artin-Davenport conjecture asserts that an integral cubic form in at least 10 variables has a nonzero integer
zero. Thus, for a homogeneous polynomial
of degree 3 with
, it asserts the existence of
with
.
Bonolis et al. (2026) reported a proof, combining geometric arguments with the circle method. The threshold is sharp: there are integral cubic forms in nine variables with no nonzero integer zero (Bonolis et al. 2026).
Bonolis et al. (2026) state that ChatGPT supplied a key incidence-dimension bound and assisted with a Galois-descent argument. Their accompanying Lean development checks the proof subject to five inputs from the literature; it is not a wholly self-contained formal proof.