How Geometric Torsion at Sub-Planck Lengths Prevents the Existence of Special Classes of Residual D-Branes
A walk from a polynomial drawing a circle to the proof that the Kuznetsov component of a generic Enriques surface admits no Serre-invariant Bridgeland stability condition. The obstruction is concrete: one phase computation says +2, another says +3, and the category cannot tolerate both.