$BElKLBg3X5l65M\It$G?t3X$r65$($F$$$?@h@8!J:rG/;`5n!K$N$40dB2$+$i!"@h@8$NB"=q$N0lIt$r650i!&8&5f5!4X$K4sB#$7$?$$$H$NAjCL$r<u$1$^$7$?!#!!4sB#$7$?$$B"=q$O;(;o$G(B<div><br><div>$B!J#1!K!!(BAnnals of Mathematics, Vol.75(1962) ~ Vol.152(2000) $B$H!!!J#2!K!!(BTopology, Vol.1(1962)~ Vol.55(1996) $B$G!"!!$I$A$i$b#7:}DxEY$N7g9f$,$"$j$^$9!#(B</div><div><br>
</div><div>$B<u$1F~$l4uK>$NJ}$O;d!JQ{;}!K$^$G!"%a%$%k$GO"Mm$/$@$5$$!#!!4|8B$O#27n#5F|(B($B6b!K$H$7$^$9!#(B</div><div>$B!J#1!K$^$?$O!J#2!K$N$I$A$i$+$@$1$N<u$1F~$l$r4uK>$9$k$3$H$b2DG=$G$9!#!!(B</div><div><div>-- </div><div>$BElKLBg3XM}3X8&5f2J?t3X@l96!&!!ElKLBg3XL>M@65<x!"!!!!!!Q{;}!!>!1R!J(BKatsuei Kenmotsu)<br>
</div></div></div>