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math.CO2026
Kneserized Anticoncentration and Reverse Absorption for Graham's Rearrangement Conjecture
Simone Costa, Stefano Della Fiore, Tao Feng +1
We establish a Kneser-based anticoncentration estimate for uniform subset sums in composite cyclic groups. The estimate contains a periodic loss and is weaker than its prime-modulu…
math.CO2025
Biembeddings of Archdeacon type: their full automorphism group and their number
Simone Costa
Archdeacon, in his seminal paper , defined the concept of Heffter array in order to provide explicit constructions of -regular biembeddings of complete graphs…