# Convexity, convex hull, math software?

1. Oct 13, 2006

### Mejo

I write to you because I need some help for my italian thesis work. I'd like to know if there is a software that can help me:I have a desired vector "b" and the real actual vertexs vector "x" of a convex hull. Can i calculate a matrix A, so that Ax=b? A must be a stocastic (and primitive) matrix.
I know, there is a problem with dimensions, but suppose now that the space is monodimensional. Moreover, there are more than one A acceptable, but I need only one of them.
is it possible?
thanks a lot, I hope I have been clear enough.

Mark

ps: sorry for my language... I do not speak english very well...