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要旨:
We investigate the streaming of particles with different velocities in a network. In the vertices of the network the particles are scattered, i.e. they change their velocity but obey a Kirchhoff law. This situation will be formulated as an abstract Cauchy problem for an operator (A,D(A)) on a suitable Banach space X. Then the problem is studied using semigroup methods. The main emphasis is on the asymptotic behaviour.
