MIT
18 06 -
Lecture 28
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Lecture 28 Positive de nite matrices All eigenvalues are positive All pivots are greater than zero All determinants are greater than zero A has the form B B for some B with independent columns x A x 0 except x 0 Inde nite matrices Saddle point Positive semi de nite The determinant is zero so one of the eigenvalues is zero
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