Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Existence and Besov regularity of the density for a class of SDEs with
  Volterra noise   By using a simple method based on the fractional integration by parts, we
prove the existence and the Besov regularity of the density for solutions to
stochastic differential equations driven by an additive Gaussian Volterra
process. We assume weak regularity conditions on the drift. Several examples of
Gaussian Volterra noises are discussed.

28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn