Stefano Della Fiore

activity

20232026

collaborators

Showing math.COShow all

4 papers · 1 filter

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.CO2026

Slice and Partition Rank Criteria for Polynomial Zero-Avoidance

Simone Costa, Stefano Della Fiore, Mattia Fontana

We study polynomial zero-avoidance over finite vector spaces by means of slice rank and partition rank. We first make the support-entropy method effective by showing how a finite d…

math.CO2024

Weak Freiman isomorphisms and sequencings of small sets

Simone Costa, Stefano Della Fiore

In this paper, we introduce a weakening of the Freiman isomorphisms between subsets of non necessarily abelian groups. Inspired by the breakthrough result of Kravitz, [14], on cycl…

math.CO2024

Variants of the Erdős distinct sums problem and variance method

Simone Costa, Stefano Della Fiore, Andrea Ferraguti

Let $Σ = {a_{1}, \dots, a_{n}}$ be a set of positive integers with $a_{1} < \dots < a_{n}$ such that all $2^{n}$ subset sums are pairwise distinct. A famous conjecture of Erdős states tha…