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7Â¥: Originally posted by hank612 at 2013-12-05 15:09:43
6.1 If N(A^p)=N(A^{p+1}), we can prove that
N(A^{p+1})=N(A^{p+2}).
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x  is in N(A^{p+1}).

6.2 ÈÎÒâv= A/3 (v) - 1/3*(A-3E) (v), ¶ø ...

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2Â¥: Originally posted by feixiaolin at 2013-12-04 18:08:15
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