The stationary Boltzmann equation for hard and soft forces is considered in the slab. An L 1 existence theorem is proven in a given indata context with xed total weighted mass. In the proof a newâ€¦ (More)

We consider the Boltzmann equation for a gas in a horizontal slab, subject to a gravitational force. The boundary conditions are of diffusive type, specifying the wall temperatures, so that the topâ€¦ (More)

For a stationary nonlinear Boltzmann equation in a slab with a particular truncation in the collision operator, the Milne problem for the boundary layer together with a weak type of hydrodynamicâ€¦ (More)

This paper deals with mathematical questions for Bose gases below the temperature TBEC where Bose-Einstein condensation sets in. The model considered is of two-component type, consisting of a kineticâ€¦ (More)

The first part reviews some recent ideas and L-existence results for non-linear stationary equations of Boltzmann type in a bounded domain in IR and far from global Maxwellian equilibrium. That is anâ€¦ (More)

We consider the Boltzmann equation for a gas in a horizontal slab, subject to a gravitational force. The boundary conditions are of diffusive type, specifying the wall temperatures, so that the topâ€¦ (More)