Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Symbolic Computation of Conservation Laws, Generalized Symmetries, and
  Recursion Operators for Nonlinear Differential-Difference Equations   Algorithms for the symbolic computation of polynomial conservation laws,
generalized symmetries, and recursion operators for systems of nonlinear
differential-difference equations (DDEs) are presented. The algorithms can be
used to test the complete integrability of nonlinear DDEs. The ubiquitous Toda
lattice illustrates the steps of the algorithms, which have been implemented in
{\em Mathematica}. The codes {\sc InvariantsSymmetries.m} and {\sc
DDERecursionOperator.m} can aid researchers interested in properties of
nonlinear DDEs.

37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio