minor在经济学里面的数学含义是什么?
例如,matrix对应的经济学数学里面的含义是矩阵,那么minor是什么呢?
Minors
Theminor[Mij]ofmatrixAisthedeterminantofthematrixwhenrowiandcolumnihavebeendeleted.
Forexample,ifthefirstrowandfirstcolumnaredeletedfrommatrix
a11a12a13
A=a21a22a23
a31a32a33
thedeterminantoftheremainingmatrixwillbetheminor
a22a23
[M11]=a32a33