S. Totaro et A. Bellenimorante, THE FREE STREAMING OPERATOR - A MATHEMATICAL-MODEL FOR DIFFUSIVE MULTIPLYING BOUNDARY-CONDITIONS, Mathematical methods in the applied sciences, 18(14), 1995, pp. 1165-1180
We show that the free streaming operator with diffusive multiplying bo
undary conditions is the generator of a quasi-bounded semigroup. We al
so examine some spectral properties of such an operator.