13 lines
194 B
TeX
13 lines
194 B
TeX
\documentclass[24pt]{article}
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\pagestyle{empty}
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\begin{document}
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\begin{equation}
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- \sum_{i' \in I} \frac{\partial {B^{i'}_{j_1,j_2,j} }}{\partial {\bf r}_i}
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\end{equation}
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\end{document}
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