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From: chiaki@kit.ac.jp (Tsukamoto Chiaki)
Newsgroups: fj.sci.math
Subject: Re: f:V(+)V($B!_(B)V*$B"*(BF$B$r(Bf((v+v')($B!_(B)g)=g(v)+g(v')$B$GDj5A$9$k(B.f$B$,@~7A<LA|$G$"$k;v$r<($;(B
Date: Thu, 25 Dec 2008 02:00:04 +0900
Organization: Kyoto Institute of Technology
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$B9)A!Bg$NDMK\$G$9(B.

In article <6a8462e0-5744-4e20-934b-0a6697be4720@q26g2000prq.googlegroups.com>
kyokoyoshida123 <kyokoyoshida123@gmail.com> writes:
> [$BL?Bj(B1] U,V,W$B$,(BF$B>e$N@~7A6u4V$G&W(B:U$B!_(BV$B"*(BW$B$rAP@~7A6u4V$H$9$k$H(B,
                                                  ^^^^$B<LA|(B
> $B@~7A<LA|&7(B:span(U$B!_(BV)$B"*(BW$B$r"O(B(u,v)$B":(BU$B!_(BV$B$KBP$7(B,
> $B&W(B(u,v)=$B&7(B(u,v)$B$H7h$a$k$H&7$O0l0UE*$G$"$k(B($B"hN,(B)$B!#(B

$B$h$j@53N$K8@$($P(B, $BAP@~7A<LA|(B $B&W(B $B$+$i(B, $B$=$N<0$rK~$?$9(B
$B@~7A<LA|(B $B&7(B $B$,(B, $B0l0UE*$KDj$^$k(B.

> [$BL?Bj(B2] $B99$K(BT=span{(u_1 + u_2, v) - (u_1, v) - (u_2, v)  (u_1, u_2 $B":(B U, v
> $B":(B V)
>   (u, v_1 + v_2) - (u, v_1) - (u, v_2)  (u $B":(B U, v_1, v_2 $B":(B V)
>   ($B&A(Bu, v) - $B&A(B(u, v)  ($B&A(B $B":(B F, u $B":(B U, v $B":(B V)
>   (u, $B&A(Bv) - $B&A(B(u, v)  ($B&A(B $B":(B F, u $B":(B U, v $B":(B V) }
> $B$KBP$7(B,T$B">(BKer$B&7$J$i$P(Bf:U($B!_(B)V$B"*(BW$B$r(B
> $B"O(B(u,v)$B":(BU$B!_(BV$B$KBP$7(B,
> f(u($B!_(B)v)=$B&7(B(u,v)$B$H7h$a$k$H(Bf$B$O@~7A$G0l0UE*$G$"$k(B($B"hN,(B)$B!#(B

$B$h$j@53N$K8@$($P(B, $B@~7A<LA|(B $B&7(B: span(U$B!_(BV)$B"*(BW $B$G(B T $B">(B Ker$B&7(B
$B$rK~$?$9$b$N$KBP$7$F(B, $B@~7A<LA|(B f: U($B!_(B)V$B"*(BW $B$r(B,
$BG$0U$N(B a $B":(B span(U$B!_(BV) $B$KBP$7$F(B, f([a]) = $B&7(B(a) $B$K$h$C$F(B
$BDj$a$k$3$H$,$G$-$k(B. $B99$K(B, $B&7(B $B$,L?Bj(B1$B$NAP@~7A<LA|(B $B&W(B $B$+$i(B
$BF@$i$l$k$b$N$G$"$l$P(B, f $B$O(B U($B!_(B)V$B"*(BW $B$J$k@~7A<LA|$NCf$G(B
 f(u($B!_(B)u) ( = $B&7(B((u, v)) ) = $B&W(B(u, v) $B$rK~$?$9M#0l$D$N(B
$B$b$N$G$"$k(B.

> $B0J>e$rF'$^$($?>e$G(B
> $B:#(B,$B&W(B:(V(+)V)$B!_(BV^*$B"*(BF$B$r(B
> (V(+)V)$B!_(BV^*$B";"O(B(v_1+v_2,g)$B"*&W(B(v_1+v_2,g)=g(v_1)+g(v_2)$B$HDj5A$9$k$H(B
> $B&W$OAP@~7A<LA|$r$J$7(B($B"hN,(B),
> $B@~7A<LA|&7(B:span((V(+)V)$B!_(BV^*)$B"*(BF$B$r(B
> (V(+)V)$B!_(BV^*$B";"O(B(v_1+v_2,g)$B$KBP$7$F$O(B
> $B&7(B(v_1+v_2,g)=$B&W(B(v_1+v_2,g)$B$H7h$a$k$H(B,
> $B&7$O0l0UE*$G$"$j(B($B"hL?Bj(B1),
> $B99$K(BT=span{(u_1 + u_2, v) - (u_1, v) - (u_2, v)  (u_1, u_2 ,v$B":(BV)
>   (u, v_1 + v_2) - (u, v_1) - (u, v_2)  (u , v_1, v_2 $B":(B V)
>   ($B&A(Bu, v) - $B&A(B(u, v)  ($B&A(B $B":(B F, u,v $B":(BV)
>   (u, $B&A(Bv) - $B&A(B(u, v)  ($B&A(B $B":(B F, u,v$B":(BV) }
> $B">(BKer$B&7$J$N$G(B($B"h>ZL@:Q$_(B),
> f:(V(+)V)($B!_(B)V^*$B"*(BF$B$r"O(B(v_1+v_2,g)$B":(B(V(+)V)$B!_(BV^*$B$KBP$7(B,
> f((v_1+v_2)($B!_(B)g)=$B&7(B(v_1+v_2,g)$B$H7h$a$k$H(Bf$B$O@~7A$G0l0UE*$G$"$k!#(B
> ($B"hL?Bj(B2)
> $B=>$C$F(B,$BBj0U$N(Bf$B$O@~7A<LA|$G$"$k!#(B
> 
> $B$G59$7$$$G$7$g$&$+(B?

$B$=$&$$$&$3$H$G59$7$$$+$HB8$8$^$9(B.
-- 
$BDMK\@i=)(B@$B1~MQ?t3X(B.$B4pHW2J3XItLg(B.$B5~ET9)7]A!0]Bg3X(B
Tsukamoto, C. : chiaki@kit.ac.jp
