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The Brauer–Manin obstruction provides a powerful framework for explaining failures of the Hasse principle for rational points on algebraic varieties. While many known examples arise from the algebraic part of the Brauer group, comparatively few...

Since its inception in the early 2000s, compressive sensing has become a well-established paradigm for efficient signal recovery, with applications ranging from medical imaging to scientific computing. More recently, data-driven reconstruction...

Abstract TBA

We consider a magnetized plasma (in the case of a tokamak) where the density of ions $ n_0$ as well as the imposed vertical magnetic field $B_0$ dépend on the horizontal variable $x$. The linearized system of Euler-Maxwell équations (system of 10...