Research any topic before you write.
Find related topics. | Discover entities. | See connections. | Build a topical map.
Helly family: Helly dimension, The Helly property in hypergraphs & Examples
In combinatorics, a Helly family of order k is a family of sets in which every minimal subfamily with an empty intersection has k or fewer sets in it. Equivalently, every finite subfamily such that every k-fold intersection is non-empty has non-empty total intersection. The k-Helly property is the property of being a Helly family of order k.
Language: English [EN]
