「線形代数学/行列式」の版間の差分

a _{1,111} & \cdots & a _{1,n1n} \\

a _{n,1n1} & \cdots & a _{n,nnn}

|A| = \det A = \sum _{\sigma \in S_n} \operatorname{sgn} \sigma a _{1, \sigma (1)} \cdots a _{n, \sigma (n)}