New formulations of the union-closed sets conjecture
The union-closed sets conjecture states that if a finite set $\mathcal A$ of finite sets is union-closed and $\mathcal A\neq \{ \varnothing\}$, then there exists an element in $\displaystyle\cup_{A\in \mathcal A} A$ that belongs to at least half of the sets in $\mathcal A$. We present three new fo...
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| Format: | Artigo |
| Idioma: | Inglês |
| Publicat: |
American Journal of Combinatorics
2022-02-01
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| Col·lecció: | The American Journal of Combinatorics |
| Matèries: | |
| Accés en línia: | https://ajcombinatorics.org/Volume1/V1.03.pdf |
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