Peter Keevash

activity

20242026

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6 papers · 1 filter

math.CO2024

A short proof of the existence of designs

Peter Keevash

We give a new proof of the existence of designs, which is much shorter and gives better bounds.

math.CO2024

The structure of sets with cube-avoiding sumsets

Thomas Karam, Peter Keevash

We prove that if $d \geq 2$ is an integer, $G$ is a finite abelian group, $Z_{0}$ is a subset of $G$ not contained in any strict coset in $G$ , and $E_{1}, \dots, E_{d}$ are dense subsets of…

math.NT2024

Additive Bases: Change of Domain

Boris Bukh, Peter van Hintum, Peter Keevash

We consider two questions of Ruzsa on how the minimum size of an additive basis $B$ of a given set $A$ depends on the domain of $B$ . To state these questions, for an abelian group…

cs.DM2024

Robot Positioning Using Torus Packing for Multisets

Chung Shue Chen, Peter Keevash, Sean Kennedy +2

We consider the design of a positioning system where a robot determines its position from local observations. This is a well-studied problem of considerable practical importance an…

math.PR2024

Dissipative particle systems on expanders

John Haslegrave, Peter Keevash

We consider a general framework for multi-type interacting particle systems on graphs, where particles move one at a time by random walk steps, different types may have different s…

math.PR2024

Balanced two-type annihilation: mean-field asymptotics

John Haslegrave, Peter Keevash

We consider an interacting particle system where equal-sized populations of two types of particles move by random walk steps on a graph, the two types may have different speeds, an…