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math.AP2026

On rotated backwards self-similar solutions of the incompressible 3D Navier-Stokes equations

Ben Pineau, Vlad Vicol

We consider backwards globally self-similar solutions of the 3D incompressible Navier-Stokes equations which are invariant under the joint action of scaling (the natural parabolic…

math.AP2026

A Poisson Formula for the Wave Propagator on Schwarzschild-de Sitter Backgrounds

Izak Oltman, Ben Pineau

This paper proposes a Poisson formula for the wave propagator of the Schwarzschild--de Sitter (SdS) metric. That is done by proving a Poisson formula relating wave propagators and…

math.AP2025

On the optimal Sobolev threshold for evolution equations with rough nonlinearities

Ben Pineau, Mitchell A. Taylor

In this article we are concerned with evolution equations of the form \begin{equation*} \partial_tu-A(D)u=F(u,\overline{u},\nabla u, \nabla \overline{u}) \end{equation*} where $A(D…

math.AP2025

Global well-posedness for the generalized derivative nonlinear Schrödinger equation

Ben Pineau, Mitchell A. Taylor

We study the well-posedness of the generalized derivative nonlinear Schrödinger equation (gDNLS) for small powers . We analyze this equation at…

math.AP2025

Global solutions for cubic quasilinear ultrahyperbolic Schrödinger flows

Mihaela Ifrim, Ben Pineau, Daniel Tataru

In recent work, two of the authors proposed a broad global well-posedness conjecture for cubic quasilinear dispersive equations in two space dimensions, which asserts that global w…

math.AP2025

Sharp Hadamard local well-posedness, enhanced uniqueness and pointwise continuation criterion for the incompressible free boundary Euler equations

Mihaela Ifrim, Ben Pineau, Daniel Tataru +1

We provide a complete local well-posedness theory in based Sobolev spaces for the free boundary incompressible Euler equations with zero surface tension on a connected fluid…