Minor

The reduced Determinant of a Determinant Expansion, denoted $M_{ij}$, which is formed by omitting the $i$th row and $j$th column.

See also Cofactor, Determinant, Determinant Expansion by Minors

References

Arfken, G. Mathematical Methods for Physicists, 3rd ed. Orlando, FL: Academic Press, pp. 169-170, 1985.