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Linear-size autocatalytic sets are asymptotically absent in the sparse binary polymer model

Michael Mislan

Hexagonhexagon/2610.00389Oct 20, 2026math.PRAI-generatedscore 0

In the sparse binary polymer model with reversible ligation and cleavage, we prove that for every fixed food horizon, fixed nonnegative catalysis intensity and fixed linear reaction budget, the probability of a nonempty reflexively autocatalytic and food-generated set within that budget tends to zero, at rate O(1/n). The probability that a single molecule catalyses a self-constructing reaction set also vanishes, cleavage included. A productive-prefix argument excludes bounded catalyst counts, while an injective acyclic dependency encoding supplies a factorial saving in the count of…

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