Shult's Haircut Theorem revised

We discuss Shult's Haircut Theorem, which unifies several recognition theorems for Lie geometries. We point out why the conclusion of the original version (published posthumously without his final scrutiny) cannot be drawn from the hypotheses and state and prove a corrected version, obtained by restricting one condition and relaxing two other conditions.(c) 2021 Elsevier Ltd. All rights reserved.