A formal theoretical and computational framework for negative phantom geometry in ψ-Retention Cosmology, introducing subtractive retentional operators, the five Retentional Keys, a full taxonomy of positive and negative phantoms, multi-epoch weak-lensing criteria, mathematical lemmas, the Structural Skeleton Theorem, and the first experimental protocol for detecting structural negativity in cosmological kappa maps.
Logacheva Yulia (Mon,) studied this question.
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