5 papers
Weakly right coherent monoids
Levent Michael Dasar, Victoria Gould, Craig Miller
A monoid is said to be weakly right coherent if every finitely generated right ideal of is finitely presented as a right -act. It is known that is weakly right coher…
Diameters of endomorphism monoids of chains
James East, Victoria Gould, Craig Miller +1
The left and right diameters of a monoid are topological invariants defined in terms of suprema of lengths of derivation sequences with respect to finite generating sets for the un…
Heights of posets associated with Green's relations on semigroups
Matthew Brookes, Craig Miller
Given a semigroup , for each Green's relation on the -height of denoted by $H_{\mathca…
Heights of one- and two-sided congruence lattices of semigroups
M. Brookes, J. East, C. Miller +2
The height of a poset is the supremum of the cardinalities of chains in . The exact formula for the height of the subgroup lattice of the symmetric group is…
On the diameter of semigroups of transformations and partitions
James East, Victoria Gould, Craig Miller +2
For a semigroup whose universal right congruence is finitely generated (or, equivalently, a semigroup satisfying the homological finiteness property of being type right-)…