The product-beating conjecture for non-degenerate genus-one systems

Less than 1 year old · traced to

Let L=(L1,…,Lt)L=(L_1,\ldots,L_t) be a non-degenerate genus-one translation-invariant system of equations over Fq\mathbb{F}_q, where each LjL_j is a translation-invariant equation in ss variables. A set A⊆FqnA\subseteq\mathbb{F}_q^n is LL-free if the only simultaneous solutions of Lj(x1,…,xs)=0L_j(x_1,\ldots,x_s)=0 for 1≤j≤t1\leq j\leq t in AA are diagonal solutions with x1=⋯=xsx_1=\cdots=x_s. The system has genus one when there is no nonempty proper subset I⊊[s]I\subsetneq [s] such that ∑i∈Ici,j=0\sum_{i\in I}c_{i,j}=0 for every 1≤j≤t1\leq j\leq t, where Lj(x1,…,xs)=∑i=1sci,jxiL_j(x_1,\ldots,x_s)=\sum_{i=1}^s c_{i,j}x_i. The product-beating conjecture. If A⊆FqnA\subseteq\mathbb{F}_q^n is LL-free and has size cnc^n, then there exists an LL-free set B⊆FqmB\subseteq\mathbb{F}_q^m for some m>nm>n such that

∣B∣>cm.|B|>c^m.

This would extend the corresponding product-beating result from a single translation-invariant equation to systems of equations; the non-degeneracy assumption is necessary because a degenerate system makes the whole space LL-free. The claim is presented as an expectation for systems and no resolution is supplied here.

References

Primary source

Paul Hametner and Fred Tyrrell, “Beating Product Constructions for Linear Equations Over Finite Fields”, arXiv:2606.12194 (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.