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Section 8.4 Alternative Minors/Cofactors Computation
Although there are no built-in methods in Sage to directly compute minors and cofactors are currently, we can leverage the command
adjugate to compute them like shown below.
From the cofactors matrix, we then have access to cofactors
\(c_{ij}\text{,}\) and from there to the minors
\(m_{ij}\) like in the following example.