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math.AP2022
Inevitable monokineticity of strongly singular alignment
Michał Fabisiak, Jan Peszek
We prove that certain types of measure-valued mappings are monokinetic i.e. the distribution of velocity is concentrated in a Dirac mass. These include weak measure-valued solution…
math.AP2022
Optimal Liouville theorem for a semilinear Ornstein-Uhlenbeck equation
Michał Fabisiak, Mikołaj Sierżęga
The question of triviality of solutions of the semilinear Ornstein-Uhlenbeck equation, \[ Δw-\frac{1}{2} \langle x,\nabla w\rangle-\fracλ{p-1}w+|w|^{p-1}w=0, \] is considered. It i…