1 citations · 1 across the 6 of their papers we have counts for
7 papers
On a generalisation of Cameron's base size conjecture
Marina Anagnostopoulou-Merkouri
Let be a finite transitive permutation group with point stabiliser . A base for is a subset of whose pointwise stabiliser is trivial, and the m…
Permutation groups, partition lattices and block structures
Marina Anagnostopoulou-Merkouri, R. A. Bailey, Peter J. Cameron
Let be a transitive permutation group on . The -invariant partitions form a sublattice of the lattice of all partitions of , having the further property that all its e…
On the regularity number of a finite group and other base-related invariants
Marina Anagnostopoulou-Merkouri, Timothy C. Burness
A -tuple of core-free subgroups of a finite group is said to be regular if has a regular orbit on the Cartesian product $G/H_1 \times \cdots \times…
Pre-primitive permutation groups
Marina Anagnostopoulou-Merkouri, Peter J. Cameron, Enoch Suleiman
A transitive permutation group on a finite set is said to be pre-primitive if every -invariant partition of is the orbit partition of a subgroup of . It follows t…
Computing finite index congruences of finitely presented semigroups and monoids
Marina Anagnostopoulou-Merkouri, Reinis Cirpons, James D. Mitchell +1
In this paper, we describe an algorithm for computing the left, right, or 2-sided congruences of a finitely presented semigroup or monoid with finitely many classes, and an alterna…
Association schemes with given stratum dimensions: on a paper of Peter M. Neumann
Marina Anagnostopoulou-Merkouri, Peter J. Cameron
In January 1969, Peter M. Neumann wrote a paper entitled "Primitive permutation groups of degree 3p". The main theorem placed restrictions on the parameters of a primitive but not…