The complex Illumination problem

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Abstract

We formulate a complex analog of the celebrated Levi-Hadwiger-Boltyanski illumination (or covering) conjecture for complex convex bodies in Cn, as well as its (non-comparable) fractional version. A key element in posing these problems is computing the classical and fractional illumination numbers of the complex analog of the hypercube, i.e., the polydisc. We prove that the illumination number of the polydisc in Cn is equal to 2n+1-1 and that the fractional illumination number of the polydisc in Cn is equal to 2n. In addition, we verify both conjectures for the classes of complex zonotopes and zonoids.

Original languageEnglish
Article number3
Pages (from-to)3
Number of pages1
JournalCombinatorica
Volume46
Issue number1
DOIs
StatePublished - 7 Jan 2026

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