Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An overview of Cosmology   While purely philosophical in the early times, and still very speculative at
the beginning of the twentieth century, Cosmology has gradually entered into
the realm of experimental science over the past eighty years. It has raised
some fascinating questions like: is the Universe static or expanding ? How old
is it and what will be its future evolution ? Is it flat, open or closed ? Of
what type of matter is it composed ? How did structures like galaxies form ? In
this course, we will try to give an overview of these questions, and of the
partial answers that can be given today. In the first chapter, we will
introduce some fundamental concepts, in particular from General Relativity. In
the second chapter, we will apply these concepts to the real Universe and deal
with concrete results, observations, and testable predictions.

33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn