Author

Yushan Qu

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Preprint Oct 2026

More on Disjunctive Convex Hulls of Generalized Cross Polytopes

We continue the study of the convex hull $D\subset\mathbb{R}^{d+n}$ of a disjunction of $n+1$ polytopes in $\mathbb{R}^d$, managed by $n$ binary indicator variables. Previously, $D$ had been characterized for arbitrary polytopes when $d\in\{1,2\}$, for polytopes sharing a common constraint matrix (under a technical con...

Yu-Shan Qu, Jon Lee · 0 citations

Preprint Jul 2026

On disjunction convex hulls for generalized cross polytopes

We continue the study of the natural polytope $\mathcal{D}$ in $\mathbb{R}^{n+d}$ associated with the disjunction of a set of $n+1$ polytopes in $\mathbb{R}^d$, managed by $n$ binary variables. Already $\mathcal{D}$ had been characterized for arbitrary $n\geq 1$ and (i) $d\in\{1,2\}$, and (ii) for a broad generalizatio...

Yushan Qu, Jon Lee · 0 citations