3 papers
math.FA2026
Fractal uncertainty principle over
Valentino Badalucco, Leonardo Franchi
We prove a fractal uncertainty principle over for porous sets, resolving a conjecture of Cohen.
math.CO2026
Product-free subsets of
Leonardo Franchi, W. T. Gowers, Fredy Yip
The third problem in Ben Green's collection of 100 open problems asks whether an open subset of that does not contain with must have measure at most 1/3. We…
math.CO2026
A unified abstract regularity lemma
Gaia Carenini, Leonardo Franchi
The goal of this short note is to prove a unified abstract regularity lemma which recovers Szemerédi's graph regularity lemma, Green's arithmetic regularity lemma, and a regularity…