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math.AP2024
Dynamics of helical vortex filaments in non viscous incompressible flows
Martin Donati, Christophe Lacave, Evelyne Miot
In this paper we study concentrated solutions of the three-dimensional Euler equations in helical symmetry without swirl. We prove that any helical vorticity solution initially con…
math.AP2024
Bloch-Floquet band gaps for water waves over a periodic bottom
Christophe Lacave, Matthieu Ménard, Catherine Sulem
A central object in the analysis of the water wave problem is the Dirichlet-Neumann operator. This paper is devoted to the study of its spectrum in the context of the water wave sy…