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arXiv · 2608.07604

An intrinsically subcritical four-point counterexample

Vignon Oussa
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Abstract

Building on the vector-Zak and cohomological framework developed by Faulhuber, Petersen, van Velthoven, and Voigtlaender in their twelve-point counterexample, we give a computer-assisted four-point counterexample with a nonzero complex-valued Schwartz window. Every symplectic triangle determinant of the explicit configuration has absolute value below one, placing it in the intrinsically subcritical regime.

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Vignon Oussa. 2026-08-06. An intrinsically subcritical four-point counterexample. https://arxiv.org/abs/2608.07604

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