3 papers
math.AP2026
Sharp kinetic trace theory
Lukas Niebel, Lisa Valentini
We establish sharp kinetic trace estimates and counterexamples across several velocity models. For half-space position domains, without any common bound on velocity support, we pro…
math.AP2026
Well-posedness of the Kolmogorov-Fokker-Planck equation on bounded domains
Lisa Valentini
We establish well-posedness of the stationary Kolmogorov equation on a bounded domain, with either spherical or Gaussian velocities, subject to either inflow boundary conditions or…
math.SP2026
Spectral deviation of concentration operators on reproducing kernel Hilbert spaces
Felipe Marceca, José Luis Romero, Michael Speckbacher +1
We study the eigenvalue profile of concentration operators (multiplication by an indicator function followed by projection) acting on reproducing kernel Hilbert spaces. The spectra…