Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Open books for Boothby-Wang bundles, fibered Dehn twists and the mean
  Euler characteristic   We examine open books with powers of fibered Dehn twists as monodromy. The
resulting contact manifolds can be thought of as Boothby-Wang orbibundles over
symplectic orbifolds. Using the mean Euler characteristic of equivariant
symplectic homology we can distinguish these contact manifolds and hence show
that some fibered Dehn twists are not symplectically isotopic to the identity
relative to the boundary. This complements results of Biran and Giroux.

33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph