Detailed Definition
Let A be an m × n matrix and k an integer with 0 < k ≤ m, and k ≤ n. A k × k minor of A is the determinant of a k × k matrix obtained from A by deleting m − k rows and n − k columns.
Since there are:
- (read "m choose k")
ways to choose k rows from m rows, and there are
ways to choose k columns from n columns, there are a total of
minors of size k × k.
Read more about this topic: Minor (linear Algebra)
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