A viscoelastic modulus admits an exact finite Prony series if and only if its Mellin kernel pole lattices align arithmetically with the constitutive integer lattice and residues satisfy decoupled first-order recurrences.
Uneyama, Information-theoretical approach to relaxation time distribution in rheology: Log-normal relaxation spectrum model, Nihon Reoroji Gakkaishi 53 (5) (2025) 215–224
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Mellin-Space Prony Representability of Linear Viscoelastic Models
A viscoelastic modulus admits an exact finite Prony series if and only if its Mellin kernel pole lattices align arithmetically with the constitutive integer lattice and residues satisfy decoupled first-order recurrences.