The Cauchy problem of the nonlinear spatially homogeneous Boltzmann equation without angular cutoff is studied. By using analytic techniques, one proves the Gevrey regularity of the solutions in non-Maxwellian and strong singularity cases.
"Gevrey Regularity for the Noncutoff Nonlinear Homogeneous Boltzmann Equation with Strong Singularity." Abstr. Appl. Anal. 2014 1 - 9, 2014. https://doi.org/10.1155/2014/584169