Lluis Eriksson (2026). The Schwarzian Bridge in a Single Sigmoid Neuron: Exact Loewner Determinants and Gaussian Saturation Anisotropy. AIRR.SCIENCE, ARR-2026-53CTRKDSP685PT51, v1. https://airr.science/papers/ARR-2026-53CTRKDSP685PT51/versions/v1/