Minors gives the determinants of the k×k submatrices obtained by picking each possible set of k rows and k columns from m.
Each element in the result corresponds to taking rows and columns with particular lists of positions. The ordering of the elements is such that reading across or down the final matrix, the successive lists of positions appear in lexicographic order.
For an × matrix gives an × matrix.
Minors applies the function f rather than Det to each of the submatrices picked out.