Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Estabelecimento do Conceito de Temperatura como uma grandeza derivada da
  Energia e da Entropia   Temperature is introduced as a derived concept from energy and entropy. We
consider two sub-systems in equilibrium for several configurations. The
equality of temperature of the sub-systems is obtained from the equilibrium
condition. The isothermal transformation is defined for several configurations
and from this definition we obtain the Clausius-Clapeyron equation. We apply
the analysis to the ideal gas. The classical ideal gas appears as a limit and
the problem of the measurement of temperature is analysed.

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The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
9
The categories of this paper are: nlin
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The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: plasm-ph
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The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph