Zeon formulation of Frankl's union-closed sets conjecture

Let HH be a hypergraph with vertex set V={v1,,vn}V=\{v_1,\ldots,v_n\} and hyperedge set satisfying condition F\mathfrak{F}, meaning that the union of any two hyperedges is again a hyperedge. Let ΓH\Gamma_H be the zeon incidence representation of HH, and let \langle\langle\cdot\rangle\rangle denote the quantity used in the source to count the corresponding hyperedges.

Zeon formulation of Frankl's conjecture. There exists i[n]i\in[n] such that

ζiΓH12ΓH.\langle\langle\zeta_i\Gamma_H\rangle\rangle\leq \frac{1}{2}\langle\langle\Gamma_H\rangle\rangle.

This is presented as the zeon-incidence formulation equivalent to Frankl's union-closed sets conjecture. It remains open.

Sources & referencesView supporting material

Primary source

Samuel Ewing and G. Stacey Staples, “Zeon and Idem-Clifford Formulations of Hypergraph Problems”, arXiv:2201.05895 (2022).

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