Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exceptional sequences and clusters   We show that exceptional sequences for hereditary algebras are characterized
by the fact that the product of the corresponding reflections is the inverse
Coxeter element in the Weyl group. We use this result to give a new
combinatorial characterization of clusters tilting sets in the cluster category
in the case where the hereditary algebra is of finite type.

23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph