But although Seki did produce the correct formula to arrive at a determinant in the form of 3X3 matrices and 4X4 matrices, he erred in his symbol for 5X5 matrices, in which the root always results in zero.
ただ、ここで関は3次と4次については行列式の正しい表示を与えているが、五次については符号の誤りがあり、常に0になってしまう。