$ABC$ sum-product theorems for Katz-Tao sets

Fuente: arXiv
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Main Author: Orponen, Tuomas
Format: Preprint
Published: 2025
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author Orponen, Tuomas
author_facet Orponen, Tuomas
contents I prove two variants of the $ABC$ sum-product theorem for $δ$-separated sets $A,B,C \subset [0,1]$ satisfying Katz-Tao spacing conditions. The main novelty is that the cardinality of the sets $B,C$ need not match their non-concentration exponent. The new $ABC$ theorems are sharp under their respective hypotheses, and imply the previous one.
format Preprint
id arxiv_https___arxiv_org_abs_2511_05091
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle $ABC$ sum-product theorems for Katz-Tao sets
Orponen, Tuomas
Combinatorics
Classical Analysis and ODEs
11B30, 28A80
I prove two variants of the $ABC$ sum-product theorem for $δ$-separated sets $A,B,C \subset [0,1]$ satisfying Katz-Tao spacing conditions. The main novelty is that the cardinality of the sets $B,C$ need not match their non-concentration exponent. The new $ABC$ theorems are sharp under their respective hypotheses, and imply the previous one.
title $ABC$ sum-product theorems for Katz-Tao sets
topic Combinatorics
Classical Analysis and ODEs
11B30, 28A80
url https://arxiv.org/abs/2511.05091