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math.CO2022
Tight Heffter arrays from finite fields
Marco Buratti
After extending the classic notion of a tight Heffter array H to any group of order , we give direct constructions for elementary abelian tight Heffter arrays, hence…
math.CO2022
Super-regular Steiner 2-designs
Marco Buratti, Anamari Nakić
A design is additive under an abelian group (briefly, -additive) if, up to isomorphism, its point set is contained in and the elements of each block sum up to zero. The…