New answers tagged polyhedra
3
Let's assume that (a) the full polyhedron is not empty (a solution to the inequalities exists) and (b) you have identified the extreme points of the unit simplex that remain extreme points after the new constraint has been added. Any other extreme points will necessarily satisfy the new constraint as an equality ($\mathbf{b}^T\mathbf{x}=c$). Since they are ...
6
If I understand correctly, you can obtain the desired linear constraints via conjunctive normal form. Explicitly, suppose $f(\bar{x}_1,\dots,\bar{x}_n)=1$, and let $S_0 = \{j\in\{1,\dots,n\}:\bar{x}_j = 0\}$ and $S_1 = \{j\in\{1,\dots,n\}:\bar{x}_j = 1\}$. You want to enforce $$\left[\left(\bigwedge_{j\in S_0} \lnot x_j\right) \bigwedge \left(\bigwedge_{j\...
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