Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On some Symmetry Axioms in Relativity Theories   In this paper we review two symmetry axioms of special relativity and their
connections to each other together with their role in some famous predictions
of relativity theory, such as time dilation, length contraction, and the twin
paradox. We also discuss briefly counterparts of these symmetry axioms in
general relativity and formulate a conjecture, namely that without them the
axioms of general relativity would capture general relativistic spacetimes only
up to conformal equivalence.

27
The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
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The categories of this paper are: supr-con
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The categories of this paper are: ao-sci
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The categories of this paper are: solv-int
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The categories of this paper are: quant-ph
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The categories of this paper are: econ
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The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
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The categories of this paper are: alg-geom