2 citations · 2 across the 3 of their papers we have counts for
3 papers
math.GR2013
Classification of automorphic conjugacy classes in the free group on two generators
Bobbe Cooper, Eric Rowland
We associate a finite directed graph with each equivalence class of words in under , and we completely classify these graphs, giving a structural cla…
math.CO2010★ 2 cited
Toward a language theoretic proof of the four color theorem
Bobbe Cooper, Eric Rowland, Doron Zeilberger
This paper considers the problem of showing that every pair of binary trees with the same number of leaves parses a common word under a certain simple grammar. We enumerate the com…
math.GR2009
Growing words in the free group on two generators
Bobbe Cooper, Eric Rowland
This paper is concerned with minimal-length representatives of equivalence classes of words in F_2 under Aut F_2. We give a simple inequality characterizing words of minimal length…