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3Â¥: Originally posted by hank612 at 2013-11-26 15:23:36
ÄãÏëÖ¤Ã÷ r(A C; 0 B) >= r(A) + r(B), ÀûÓþØÕóµÄÐÐRank µÈÓÚÁÐRank,

(i): ÐÐRank(A  C; 0  B) >= Rank (A C) + Rank( 0 B)
(ii): ÁÐRank( A C) >= Rank(A), ÁÐRank(0 B)=Rank(B).

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4Â¥2013-11-26 16:24:37
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2Â¥2013-11-26 15:08:20
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soliton923: ½ð±Ò+2, лл²ÎÓëÌÖÂÛ~~~ 2013-11-26 22:01:28
ÄãÏëÖ¤Ã÷ r(A C; 0 B) >= r(A) + r(B), ÀûÓþØÕóµÄÐÐRank µÈÓÚÁÐRank,

(i): ÐÐRank(A  C; 0  B) >= Rank (A C) + Rank( 0 B)
(ii): ÁÐRank( A C) >= Rank(A), ÁÐRank(0 B)=Rank(B).
We_must_know. We_will_know.
3Â¥2013-11-26 15:23:36
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hanbinddd

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ÒýÓûØÌû:
3Â¥: Originally posted by hank612 at 2013-11-26 15:23:36
ÄãÏëÖ¤Ã÷ r(A C; 0 B) >= r(A) + r(B), ÀûÓþØÕóµÄÐÐRank µÈÓÚÁÐRank,

(i): ÐÐRank(A  C; 0  B) >= Rank (A C) + Rank( 0 B)
(ii): ÁÐRank( A C) >= Rank(A), ÁÐRank(0 B)=Rank(B).

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5Â¥2013-11-26 16:45:16
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