1.2 $BFbE@(B $B$G6KCM$r<h$l$P(B

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1.2 $BFbE@(B $B$G6KCM$r

$\begin{jtheorem} $\Omega$ $B$,(B $\R^n$ $B$N3+=89g!$

$\begin{jdefinition} $A\subset\R^n$, $f\colon A\to\R$, $a\in A$ $B$H$9$k$H$-!$ .!W!V695A$N6K>.!W$bF1MM$G$"$k!#(B \end{jdefinition}">

$\begin{jremark} $BFbE@$G$7$+6KCM$r9M$($J$$$H$$$&N)>l$b$$ r7oIU$-6KCMLdBj(B... ...$B.57$G$b9M$($F$bNI$(B($B%&%)%9%/%1n&%R%D!

- $B>ZL@(B
- $B4v2?3XE*9M;!(B

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Masashi Katsurada
$BJ?@.(B23$BG/(B7$B7n(B17$BF|(B