sage: M = matrix([[1, 1, 1],[0, 0, -1]]) sage: M [ 1 1 1] [ 0 0 -1] sage: M.right_kernel() Free module of degree 3 and rank 1 over Integer Ring Echelon basis matrix: [ 1 -1 0] sage: k = M.right_kernel() sage: k.matrix() [ 1 -1 0] sage: M.right_kernel().matrix() [ 1 -1 0]
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