Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

Login

Username

Password

Not registered yet?

Post a reply

Go back

Write your message and submit
:) :| :( :D :o ;) :/ :P :lol: :mad: :rolleyes: :cool: | :dizzy :eek :kiss :roflol :rolleyes :shame :down :up :touched :sleep :wave :swear :tongue :what :faint :dunno
Options

Go back

Topic review (newest first)

bartelj
2005-12-15 09:06:38

Hi,

Solving my mixed integer linear problem I have faced matrix singularities. I have excluded almost all problems, but I don't know a short way to exclude rows which are similar (as shown) to each other and they cause a singularity problem.

So if we have in matrix A two rows from all like this;

x1 - x2 < 0 and

2*x1 - 2*x2 < 0

So the second inequality is just multiplied by 2, but it could be any real number.

So I have to find all this kind of similarities in a matrix size 1000(rows) * 768 (columns)

I am using matlab, if someone knows if the is any command which does this directly is even better.



Thank you for your help.


bart

Board footer

Powered by FluxBB