Near optimal three-fold additive energy bound for points on convex curves

arXiv:2608.12316 2026 Architecture 1 ideas extracted · analyzed Sep 1, 2026

What the math gives to ML

The paper proves that lifting a finite scalar set onto any strictly convex curve γ(t)=(t,f(t)) produces near-minimal three-fold additive energy: the number of six-tuples with equal sums of three lifted points is only |X|^{3+ε}, up to the unavoidable diagonal contribution. This suggests structured anti-collision codebooks for neural representations, especially when downstream operations add or average embeddings and representational aliasing is harmful. The most direct experiment is to replace learned scalar or discrete-code embeddings with a fixed convex lift such as (t,t²), then measure exact and approximate collisions and compositional retrieval accuracy against unconstrained and random embeddings.

Ideas from this paper

Unverified 2026

Convex-lifted additive codebook

Encode each scalar or discrete code t by the strictly convex lift γ(t)=(t,t²), optionally followed by a learned linear projection and normalization. Because three-code sums on this curve have only near-minimal additive energy, the representation should produce fewer collisions when a model composes three tokens, codes, or retrieved items by addition.

Useful5/10
Difficulty3/10
Novelty7/10
Paper: Near optimal three-fold additive energy bound for points on convex curves arXiv:2608.12316