Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pseudodifferentialoperatoren mit nichtglatten Koeffizienten auf
  Mannigfaltigkeiten   A generalization of differential operators are pseudodifferential operators
which are used for reasoning about partial differential equations with variable
coefficients. A lot of useful properties about classical pseudodifferential
operators are already discovered by the works of H. Kumano-Go and L.
H\"ormander. In this work, we like to transfer their ideas on those operators
which symbols are merely H\"older-continous. We focus on the composition of
operators, symbol smoothing and operators on manifolds.

33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex