Linear Algebra

( 1 γ 12 ⋯ γ 1 k γ 1 k + 1 ⋯ γ 1 n 0 1 ⋯ γ 2 k γ 2 k + 1 ⋯ γ 2 n ⋮ 0 0 ⋯ 1 γ k k + 1 ⋯ γ k n 0 0 ⋯ 0 0 ⋯ 0 ⋮ 0 0 ⋯ 0 0 ⋯ 0 )