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for questions involving inequalities, upper and lower bounds.

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Inverting a linear system of inequalities

Suppose I have a set of inequalities $l \leq Ax \leq r$ for vectors $l,r$ and matrix $A$. I am trying to bound $x$ using a function of $l,r: f(l) \leq x \leq g(r)$ for some $f,g$. … I have a set of three inequalities: $$m\leq m' \leq p+m$$ $$m \leq m'-z' \leq p+m$$ $$2p+2m+z \leq 2m'+p'\leq 2p+2m+z$$ Or in matrix format $ \begin{bmatrix} m \\ m \\ 2m+2p+z \\ \end{bmatrix} \leq \begin …