Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Traces of weighted function spaces: dyadic norms and Whitney extensions   The trace spaces of Sobolev spaces and related fractional smoothness spaces
have been an active area of research since the work of Nikolskii, Aronszajn,
Slobodetskii, Babich and Gagliardo among others in the 1950's. In this paper we
review the literature concerning such results for a variety of weighted
smoothness spaces. For this purpose, we present a characterization of the trace
spaces (of fractional order of smoothness), based on integral averages on
dyadic cubes, which is well adapted to extending functions using the Whitney
extension operator.

35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an