%<PLAINTEXT>
%$BNL;RJ*M}3X!!(B:$B!!1i=,LdBj(B9-9$B2rEz(B
%$B:n@.<T(B    $B!!(B:$B!!(B250237G$B!!J?Ln2m5,(B
%$B:n@.G/7nF|!!(B:  2002/11/27
%$BEE;R%a!<%k!!(B:$B!!(Bg250237@mail.ecc.u-tokyo.ac.jp
 \mondai {250237G$B!!J?Ln2m5,(B}
{2002/11/27}
{g250237@mail.ecc.u-tokyo.ac.jp}
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{
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\begin{equation}
E=-\frac{{z^\ast}^2m_e e^4}{8{\epsilon_0}^2 h^2 n^2}
\end{equation}
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}
