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161 bytes added ,  15:10, February 21, 2010
definition
The '''rank''' of a [[matrix]] is the number of its leading 1's when in [[reduced row-echelon form]] (rref).
[[Category:linear algebra]]
[[Category:mathematics]]
Anthony, Irenaeus, Siteadmin, Bureaucrats, Check users, nsAm_Govt_101RO, nsAm_Govt_101RW, nsAm_Govt_101_ta, nsJudgesRO, nsJudgesRW, nsJudges_talkRO, nsJudges_talkRW, nsTeam2RO, nsTeam2RW, nsTeam2_talkRO, nsTeam2_talkRW, oversight, Administrators
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