Entropic compression toy
v476_entropic_compression_toy.py · frontier
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GRAV.ENTROPIC.COMPRESS.01: the AP2 compression conjecture of the entropic-action bridge (v473) made WELL-POSED on an exactly solvable model. [N] pure gapped bulk: staggered-mass chain, ground-state covariance a projection (pure bulk, thermal boundary -- the seam situation). [N] compression is thermal (v155 in the bridge context): spec(PCP) strictly inside (0,1), Peschel K finite, S > 0. [N] ORDER OBSTRUCTION (the reading decided): on the pure bulk f(x) = x/(1-x) is singular on spec(C) = {0,1} -- the literal operator-side reading P f(C) P is ILL-POSED while f(PCP) is finite: the identity can only be read STATE-SIDE (build Delta_Sigma from the compressed relative metric), matching Bianconi's own local construction -- AP2 retyped, not weakened. [E] block algebra (symbolic): [C^n]_AA - (C_AA)^n carries the cross block twice -- first order vanishes identically, the mismatch is exactly quadratic in cross-cut correlations (= the entanglement content). [N] gap control at the bounded level: bulk identity f(C_T) = e^{-h/T} exact; mismatch obeys d <= x^2 and falls with the gap; decoupled cut exact -- the two readings converge in the gap-dominated regime, where TFPT operates. [C] retyped conjecture; [O] AP2 open (continuum seam statement), no marker moves. Numerical, Python-only by nature.
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