2 citations · 5 across the 8 of their papers we have counts for
10 papers
An example of Tateno disproving conjectures of Bonato-Tardif, Thomasse, and Tyomkyn
Davoud Abdi, Claude Laflamme, Atsushi Tateno +1
In his 2008 thesis, Tateno claimed a counterexample to the Bonato-Tardif conjecture regarding the number of equimorphy classes of trees. In this paper we revisit Tateno's unpublish…
Siblings of countable cographs
Gena Hahn, Maurice Pouzet, Robert Woodrow
We show that every countable cograph has either one or infinitely many siblings. This answers, very partially, a conjecture of Thomassé. The main tools are the notion of well quasi…
The poset of copies for automorphism groups of countable relational structures
Claude Laflamme, Maurice Pouzet, Norbert Sauer +1
Let be a subgroup of the symmetric group of all permutations of a countable set . Let be the topological closure of $\mathr…
Siblings of an -categorical relational structure
Claude Laflamme, Maurice Pouzet, Norbert Sauer +1
A sibling of a relational structure is any structure which can be embedded into and, vice versa, in which can be embedded. Let be the number of siblings of…
Balanced independent sets in graphs omitting large cliques
Claude Laflamme, Andres A. Lopez, Daniel T. Soukup +1
Our goal is to investigate a close relative of the independent transversal problem in the class of infinite -free graphs: we show that for any infinite -free graph $G=(V,…
Equimorphy -- The Case of Chains
C. Laflamme, M. Pouzet, R. Woodrow
Two structures are said to be equimorphic if each embeds in the other. Such structures cannot be expected to be isomorphic, and in this paper we investigate the special case of lin…
Primitive bound of a 2-structure
Abderrahim Boussaïri, Pierre Ille, Robert E. Woodrow
A 2-structure on a set is given by an equivalence relation on the set of ordered pairs of distinct elements of . A subset of , any two elements of which appear the sa…
Ramsey precompact expansions of homogeneous directed graphs
Jakub Jasiński, Claude Laflamme, Lionel Nguyen Van Thé +1
In 2005, Kechris, Pestov and Todorcevic provided a powerful tool to compute an invariant of topological groups known as the universal minimal flow, immediately leading to an explic…
Overgroups of the Automorphism Group of the Rado Graph
Peter Cameron, Claude Laflamme, Maurice Pouzet +2
We are interested in overgroups of the automorphism group of the Rado graph. One class of such overgroups is completely understood; this is the class of reducts. In this article we…
Convex Sublattices of a Lattice and a Fixed Point Property
Dwight Duffus, Claude Laflamme, Maurice Pouzet +1
The collection CL(T) of nonempty convex sublattices of a lattice T ordered by bi-domination is a lattice. We say that T has the fixed point property for convex sublattices (CLFPP f…