2 Mar
2011
2 Mar
'11
8:07 p.m.
A triangular matrix has zero elements below the diagonal (upper triangular) or above the diagonal (lower triangular). This way a nonsingular triangular matrix can be inverted in straightforward manner. LU decomposition allows to produce two triangular matrices which product is your source matrix. A matrix inversion can be implemented by means of these succeeding operations. Ryan wrote:
Matwey V. Kornilov wrote:
`solve' does matrix inversion for triangular matrices. LU decomposition is also present in lu.hpp
What is the difference between a triangular matrix and the plain matrix?
Ryan