In determinant calculation, what is the term for a signed minor of a matrix element?
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Cofactor
The cofactor of an entry is calculated as (-1)^(i+j) multiplied by the minor (the determinant of the submatrix left after removing row i and column j). Cofactor expansion is a standard method for computing determinants.
Also asked as:
- What is the name for the value (-1)^(i+j) multiplied by the minor of a matrix element?