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