Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cluster-tilted and quasi-tilted algebras   In this paper, we prove that relation-extensions of quasi-tilted algebras are
2-Calabi-Yau tilted. With the objective of describing the module category of a
cluster-tilted algebra of euclidean type, we define the notion of reflection so
that any two local slices can be reached one from the other by a sequence of
reflections and coreflections. We then give an algorithmic procedure for
constructing the tubes of a cluster-tilted algebra of euclidean type. Our main
result characterizes quasi-tilted algebras whose relation-extensions are
cluster-tilted of euclidean type.

33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph