改错。

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unlockable
2023-05-13 17:24:47 +08:00
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@@ -135,7 +135,7 @@
\end{definition} \end{definition}
\begin{definition}[零面积集] \begin{definition}[零面积集]
$E \subset \realnum^2$满足:对任意的$\varepsilon > 0$,存在有限个闭矩形$\{D_i\}_{i = 1}^m$,使得$E \subset \bigcup \limits_{i = 1}^m D_i$$\sum_{i = 1}^m \sigma(D_i) < \varepsilon$,则称$E$为二维零集。 $E \subset \realnum^2$满足:对任意的$\varepsilon > 0$,存在有限个闭矩形$\{D_i\}_{i = 1}^m$,使得$E \subset \bigcup \limits_{i = 1}^m D_i$$\sum_{i = 1}^m \sigma(D_i) < \varepsilon$,则称$E$为二维零面积集。
\end{definition} \end{definition}
\begin{corollary} \begin{corollary}