Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Families of Calabi-Yau elliptic fibrations in $\mathbb{P}(\mathcal{L}^a
  \oplus \mathcal{L}^b \oplus \mathcal{O}_B)$   Let $B$ be a smooth projective surface, and $\mathcal{L}$ an ample line
bundle on $B$. The aim of this parer is to study the families of elliptic
Calabi--Yau threefolds sitting in the bundle $\mathbb{P}(\mathcal{L}^a \oplus
\mathcal{L}^b \oplus \mathcal{O}_B)$ as anticanonical divisors. We will show
that the number of such families is finite.

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The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: bayes-an
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
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The categories of this paper are: stat
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
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The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio