Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The exponential of the spin representation of the Lorentz algebra   As discussed in a previous article, any (real) Lorentz algebra element
possess a unique orthogonal decomposition as a sum of two mutually annihilating
decomposable Lorentz algebra elements. In this article, this concept is
extended to the spin representation of the Lorentz algebra. As an application,
a formula for the exponential of the spin representation is obtained, as well
as a formula for the spin representation of a proper orthochronous Lorentz
transformation.

22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
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The categories of this paper are: econ
31
The categories of this paper are: ao-sci
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The categories of this paper are: eess
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
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The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
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The categories of this paper are: q-fin