Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Collisions in Nonholonomic systems   We consider nonholonomic systems with collisions and propose a concept of
weak solutions to Lagrange-d'Alembert equations. In the light of this concept
we describe dynamics of the collisions. Several applications have been
investigated. Particularly the collision of rotating ball and the rough floor
has been considered.

25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph