Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Semigroup generation properties of streaming operators with
  non--contractive boundary conditions   We present $c_0$--semigroup generation results for the free streaming
operator with abstract boundary conditions. We recall some known results on the
matter and establish a general theorem. We motivate our study with a lot of
examples and show that our result applies to the physical cases of Maxwell
boundary conditions in the kinetic theory of gases as well as to the non--local
boundary conditions involved in transport--like equations from population
dynamics.

34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas