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c++ Programming Glossary: triangularC++ Memory Efficient Solution for Ax=b Linear Algebra System http://stackoverflow.com/questions/1242190/c-memory-efficient-solution-for-ax-b-linear-algebra-system is performed with umfpack_di_numeric . The lower and upper triangular solves are performed with umfpack_di_solve . With n as 500 000..
How to implement Matlab's mldivide (a.k.a. the backslash operator “\”) http://stackoverflow.com/questions/18553210/how-to-implement-matlabs-mldivide-a-k-a-the-backslash-operator A 1 size A 2 A is square if isequal A tril A A is lower triangular x A b This is a simple forward substitution on b elseif isequal.. substitution on b elseif isequal A triu A A is upper triangular x A b This is a simple backward substitution on b else if isequal.. non square matrices QR decomposition is used. For square triangular matrices it performs a simple forward backward substitution..
How to find determinant of large matrix http://stackoverflow.com/questions/1886280/how-to-find-determinant-of-large-matrix calculating the determinant as det M det L det U which for triangular matrices is just the product of the entries in their diagonal...
finding triangulars from array http://stackoverflow.com/questions/7003914/finding-triangulars-from-array triangulars from array zero indexed array A consisting of N integers is.. A consisting of N integers is given. A triplet P Q R is triangular if and A P A Q A R A Q A R A P A R A P A Q . For example consider.. A 0 10 A 1 2 A 2 5 A 3 1 A 4 8 A 5 20 Triplet 0 2 4 is triangular. Write a function int triangle const vector int A that given..
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