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(새 문서: https://kitchingroup.cheme.cmu.edu/blog/2013/04/01/Computing-determinants-from-matrix-decompositions/ 1. A = PLU, det(L) = 1 det(U) = Product of diagonal elements det(P) = (-1)^p) |
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| 7번째 줄: | 7번째 줄: | ||
det(U) = Product of diagonal elements | det(U) = Product of diagonal elements | ||
det(P) = (-1)^p | det(P) = (-1)^p | ||
p can be calculated by dim - (sum of diagonal of P) - 1, | |||
만약 diagonal이 1이면 안바뀐 것이고, 0이번 바뀐 것이므로 | |||