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math.GR2009
Decision problems for inverse monoids presented by a single sparse relator
Susan Hermiller, Steven Lindblad, John Meakin
We study a class of inverse monoids of the form M = Inv< X | w=1 >, where the single relator w has a combinatorial property that we call sparse. For a sparse word w, we prove that…
math.GR2008★ 3 cited
Subgroups of free idempotent generated semigroups need not be free
Mark Brittenham, Stuart W. Margolis, John Meakin
We use topological methods to study the maximal subgroups of the free idempotent generated semigroup on a biordered set. We use these to give an example of a free idempotent genera…