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math.AP2026
A nonlinear rod linkage model: zero-energy chains and continuum consistency
Dennis Kriventsov, Philippe G. LeFloch
We study a discrete Lagrangian model for a one-dimensional chain of rigid rods coupled by elastic springs. We characterize the geometry of its zero-energy constraint and distinguis…
math.AP2026
A complete classification of singularities for radial solutions of the Stefan problem
Dennis Kriventsov, Georg S. Weiss
We investigate singularities of radial solutions of the classical two-phase and one-phase Stefan problem. In a remarkable result, M.A. Herrero and J.J.L. Velazquez show existence o…