Diversity Contraction Across Substrates A boundary law for semantic exhaustion Lee Sharks · Rex Fraction · Nobel Glas ·

'Diversity Contraction Across Substrates' establishes a boundary law for semantic exhaustion: the formal condition under which a regenerative system's diversity irreversibly collapses to a trap state. The paper derives the Mediation Ratchet (α* = p/g₀) as the closed-form analytic threshold governing when pruning overwhelms regeneration. An exogenous floor makes a system exhaustion-resistant; without one, diversity contracts monotonically. The paper is positioned upstream of the DS-6 measurement program and beneath the semantic-physics field map.