<p>$B3'MM(B<br />$BMh=5$NElBg?tM}!&J#AG2r@O4v2?%;%_%J!<$N$*CN$i$;$G$9!#(B<br /> <br />$B!TF|;~!U(B12$B7n(B1$BF|!J7n!K(B10:30$B!A(B12:00<br />$B!T>l=j!UElBg?tM}!J6p>l%-%c%s%Q%9!K(B126$B65<<(B<br />$B!T9V1i<T!UBgBt7rIW(B $B;a(B<span><span> </span></span>($BL>8E20Bg3X(B)<br />$B!T%?%$%H%k!U(BEffective and noneffective extension theorems</p><div>$B0J9_$NM=Dj$K$D$$$F$O!"$3$A$i$r$4Mw$/$@$5$$!#(B<br />http://seminar.ms.u-tokyo.ac.jp/geocomp/future.html<br /> <br />$BJ#AG2r@O4v2?%;%_%J!<C4Ev(B<br />$BJ?CO7r8c!"9b;3LP@2(B<br /> </div>