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math.AP2026
Arnold stability and rigidity in Zeitlin's model of hydrodynamics
Luca Melzi, Klas Modin
Zeitlin's model is a discretisation of the 2-D Euler equations that preserves the underlying geometric structure. This feature makes it suitable for studying the qualitative behavi…
math.AP2025
Two-dimensional fluids via matrix hydrodynamics
Klas Modin, Milo Viviani
Two-dimensional (2-D) incompressible, inviscid fluids produce fascinating patterns of swirling motion. How and why the patterns emerge are long-standing questions, first addressed…