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\begin{document}

\beqa
\nonumber
{\rm Tsallis:}\qquad p(|\Delta E|)&=&\frac{\beta(2-q)}{\left(1+\beta(q-1)|\Delta E|\right)^{\frac{1}{q-1}}}\\
\nonumber
\\
\nonumber
\\
\nonumber
{\rm Boltzmann:}\qquad p(|\Delta E|)&=&\beta e^{-\beta|\Delta E|}\\
\nonumber
\\
\nonumber
\\
\nonumber
{\rm Tsallis 2:}\qquad p(|\Delta E|)&=&
\frac{c}{\left(1-\frac{\lambda_q}{\mu_1}+\frac{\lambda_q}{\mu_1} e^{(q-1)\mu_1|\Delta E|}\right)^{\frac{1}{q-1}}}
\eeqa

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\end{document}

