Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Branched projective structures on a Riemann surface and logarithmic
  connections   We study the set ${\mathcal P}_S$ consisting of all branched holomorphic
projective structures on a compact Riemann surface $X$ of genus $g \geq 1$ and
with a fixed branching divisor $S:= \sum_{i=1}^d n_i\cdot x_i$, where $x_i \in
X$. Under the hypothesis that $n_i=1$, for all $i$, with $d$ a positive even
integer such that $d \neq 2g-2$, we show that ${\mathcal P}_S$ coincides with a
subset of the set of all logarithmic connections with singular locus $S$,
satisfying certain geometric conditions, on the rank two holomorphic jet bundle
$J^1(Q)$, where $Q$ is a fixed holomorphic line bundle on $X$ such that
$Q^{\otimes 2}= TX\otimes {\mathcal O}_X(S)$. The space of all logarithmic
connections of the above type is an affine space over the vector space $H^0(X,
K^{\otimes 2}_X \otimes {\mathcal O}_X(S))$ of dimension $3g-3+d$. We conclude
that ${\mathcal P}_S$ is a subset of this affine space that has codimenison $d$
at a generic point.

24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg