想問下 given A is mxn matrix Then the direct sum of ColA and ColA perp = R^n or R^m ?(col A)^\perp = (row A^T)^\prep = ker (A^T) then apply rank nullity咦睇錯左 nxn should be R^m, there are m rows in m x n matrix
想問下 given A is mxn matrix Then the direct sum of ColA and ColA perp = R^n or R^m ?(col A)^\perp = (row A^T)^\prep = ker (A^T) then apply rank nullity
想問下 given A is mxn matrix Then the direct sum of ColA and ColA perp = R^n or R^m ?