Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A modern view of the classical Herglotz-Noether theorem   In this paper we give a new proof, valid for all dimensions, of the classical
Herglotz-Noether theorem that all rotational shear-free and expansion-free
flows (rotational Born-rigid flows) in Minkowski spacetime are generated by
Killing vector fields (isometric flows). This is aimed as an illustration of a
general framework for working with problems that can be described as a
structure-preserving submersion, which we will describe in a subsequent paper.

7
The categories of this paper are: hep-th
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ex
19
The categories of this paper are: eess
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The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
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The categories of this paper are: cond-mat
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-alg
18
The categories of this paper are: econ
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The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
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The categories of this paper are: q-bio
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The categories of this paper are: stat