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Discrete coagulation--fragmentation systems in weighted $\ell^1$ spaces

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arxiv 2504.21665 v2 pith:UNWZ5IQM submitted 2025-04-30 math.FA

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keywords cauchyprovesemi-linearweightedabstractapplicationassumeassumptions
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abstract

We study an infinite system of ordinary differential equations that models the evolution of coagulating and fragmenting clusters, which we assume to be composed of identical units. Under very mild assumptions on the coefficients we prove existence, uniqueness and positivity of solutions of a corresponding semi-linear Cauchy problem in a weighted $\ell^1$ space. This requires the application of novel results, which we prove for abstract semi-linear Cauchy problems in Banach lattices where the non-linear term is defined only on a dense subspace.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Fragmentation-coagulation processes with advection or diffusion in space

    math.AP 2026-01 conditional novelty 6.0 of 10

    Spatially transported fragmentation-coagulation equations generate positive C0-semigroups in weighted L1 spaces and admit local classical solutions with unbounded coagulation under explicit rate conditions.

  2. Continuous fragmentation equations in weighted $L^1$ spaces

    math.FA 2025-09 accept novelty 6.0 of 10

    Continuous fragmentation equations with possibly non-mass-conserving kernels admit unique classical solutions in suitably weighted L1 spaces, and the associated semigroup is analytic for a large class of weights and kernels.

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