arxivcs.LG2026-07-07
On Explicit Super-Expressive Approximation for Neural Networks
Feng-Lei Fan, Ze-Yu Li, Chen-Yu Wang, Jian-Jun Wang
In this work, we investigate the fixed-architecture neural network approximation with explicit parameter bounds and elementary activations. While prior work demonstrated super-expressive approximation using fixed-size networks, they lack quantitative and non-asymptotic characteri…