John T. Griesmer

activity

20082026

most citedMultiparameter ergodic averages for two commuting actions of an amenable group

3 citations · 4 across the 6 of their papers we have counts for

collaborators

Showing math.NTShow all

3 papers · 1 filter

math.NT2025

Discrete sumsets with one large summand

John T. Griesmer

If $A$ and $B$ are subsets of an abelian group, their sumset is $A + B := {a + b : a \in A, b \in B}$ . We study sumsets in discrete abelian groups, where at least one summand has positive…

math.NT2024

Intersective sets for sparse sets of integers

Pierre-Yves Bienvenu, John T. Griesmer, Anh N. Le +1

For $E \subset N$ , a subset $R \subset N$ is $E$ -intersective if for every $A \subset E$ having positive upper relative density, we have $R \cap (A - A) \neq \var…

math.NT2021

Bohr neighborhoods in generalized difference sets

John T. Griesmer

If $A$ is a set of integers having positive upper Banach density and $r, s, t$ are nonzero integers whose sum is zero, a theorem of Bergelson and Ruzsa says that the set $rA+sA+tA:=\…