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## [Help-gsl] How to solve a linear equation system with left (lower) trian

**From**: |
Alexander Morgenstern |

**Subject**: |
[Help-gsl] How to solve a linear equation system with left (lower) triangle matrix in gsl? |

**Date**: |
Mon, 12 Mar 2007 04:26:22 +0100 |

**User-agent**: |
IceDove 1.5.0.10 (X11/20070307) |

Hello Folks,
I am new to the list and just started learning about gsl. So at first I
say "hello" to everyone.
Now my (hopefully not too stupid) question: I want to solve a linear
equation system of the form:
Lx = b
With L being a left (lower) triangle matrix. In the gsl reference i
found so far only the functions gsl_linalg_R_solve and gsl_linalg_R_svx
which solve eqn. systems of the form
Rx = b
with R being a right (upper) triangle matrix. Of course i could just
reverse all columns and rows in L and then use gsl_linalg_R_solve or
whatever, but there must be a simpler way (?).
Alexander.

**[Help-gsl] How to solve a linear equation system with left (lower) triangle matrix in gsl?**,
*Alexander Morgenstern* **<=**