Determinants
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- Particular types of matrices
- Definition of trace of a matrix
- Cofactors
- Determinants and operations on matrices
- Determinants axiomatically
- The determinant of a matrix measures the area/volume of the parallelogram/parallelipiped determined by its columns.
- The determinant of the matrix of a linear transformation is the factor by which the area/volume changes.
- Definition of adjugate/classical adjoint of a matrix
- A matrix is called ill-conditioned if it is nearly singular
- The condition number of matrix measures how close it is to being singular
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