# Generating stationary random graphs on Z with prescribed independent, indentically distributed degrees Artikel i vetenskaplig tidskrift, 2006

Let F be a probability distribution with support on the nonnegative integers. We describe two algorithms for generating a stationary random graph, with vertex set ℤ, in which the degrees of the vertices are independent, identically distributed random variables with distribution F. Focus is on an algorithm generating a graph in which, initially, a random number of 'stubs' with distribution F is attached to each vertex. Each stub is then randomly assigned a direction (left or right) and the edge configuration obtained by pairing stubs pointing to each other, first exhausting all possible connections between nearest neighbors, then linking second-nearest neighbors, and so on. Under the assumption that F has finite mean, it is shown that this algorithm leads to a well-defined configuration, but that the expected length of the shortest edge attached to a given vertex is infinite. It is also shown that any stationary algorithm for pairing stubs with random, independent directions causes the total length of the edges attached to a given vertex to have infinite mean. Connections to the problem of constructing finitary isomorphisms between Bernoulli shifts are discussed.

## Författare

### Maria Deijfen

Göteborgs universitet

Chalmers, Matematiska vetenskaper, Matematisk statistik

### R. Meester

Vrije Universiteit Amsterdam

0001-8678 (ISSN) 1475-6064 (eISSN)

Vol. 38 2 287-298

Matematik

### DOI

10.1239/aap/1151337072

2018-03-06