This repository contains the manuscript source, compiled PDF, figures, and supporting materials for the paper on dual limits in reduced inverse geometry. The paper develops a unified reduced-geometric framework for two distinct failure mechanisms in inverse reconstruction: geometric interfaces and noise-relative horizons. The first appears as a finite, immovable boundary in reduced reheating geometry, while the second appears as an operational, movable limit in dynamical-decoupling noise spectroscopy. The central result is a dual classification theorem showing that these two systems jointly realize the full reduced-geometry taxonomy of obstruction mechanisms. The deposit includes the LaTeX source, compiled manuscript, figure files, and associated supporting materials used in the preparation of the paper. V2: The paper has been substantially reorganized around the distinction between structural walls and observable horizons in reduced inverse geometry. The previous Fisher/rank-centered framing has been replaced by an operational comparison between asymptotic sensitivity suppression in DD spectroscopy and finite branch-wall closure in reheating inverse geometry. The revised version introduces a unified operational vocabulary for system-dependent sensitivity measures, clarifies the role of asymptotic versus finite structural walls, strengthens the DD finite-collapse analysis, refines the fold-interface interpretation in reheating geometry, and updates all conceptual figures and cost-scaling discussions for consistency and readability.
Hiroyuki Shioiri (Tue,) studied this question.