Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lectures on 2D Yang-Mills Theory, Equivariant Cohomology and Topological
  Field Theories   These are expository lectures reviewing
  (1) recent developments in two-dimensional Yang-Mills theory, and
  (2) the construction of topological field theory Lagrangians. Topological
field theory is discussed from the point of view of infinite-dimensional
differential geometry. We emphasize the unifying role of equivariant cohomology
both as the underlying principle in the formulation of BRST transformation laws
and as a central concept in the geometrical interpretation of topological field
theory path integrals.

15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg