Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The deformation theory of sheaves of commutative rings   We define a sheaf of abelian groups whose cohomology is represented by the
cotangent complex. We show how obstructions to some standard deformation
problems arise as the classes of torsors under and gerbes banded by this sheaf.

36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th