Alexander Roberts

collaborators

2 papers

math.CO2020

Isoperimetric stability in lattices

Ben Barber, Joshua Erde, Peter Keevash +1

We obtain isoperimetric stability theorems for general Cayley digraphs on $Z^{d}$ . For any fixed $B$ that generates $Z^{d}$ over $Z$ , we characterise the app…

math.CO2016

Tree Matchings

Alexander Roberts

An $(s, t)$ -matching in a bipartite graph $G = (U, V, E)$ is a subset of the edges $F$ such that each component of $G [F]$ is a tree with at most $t$ edges and each vertex in $U$ has $s$ …