Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modelling Time   We briefly review two concepts of time - the usual time associated with
"being" and more recent ideas, answering to the description of "becoming". The
approximation involved in the former is examined. Finally we argue that it is
(unpredictable) fluctuations that underlie time.

10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga