Pure Mathematics Research: Recent submissions
Now showing items 6-10 of 14
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Effects of thermal conduction and compressive viscosity on the period ratio of the slow mode
(2010-06) - Journal articleAims: Increasing observational evidence of wave modes brings us to a closer understanding of the solar corona. Coronal seismology allows us to combine wave observations and theory to determine otherwise unknown parameters. ... -
Maximal subsemigroups of the semigroup of all mappings on an infinite set
(2015-03-01) - Journal articleIn this paper we classify the maximal subsemigroups of the full transformation semigroup ΩΩ, which consists of all mappings on the infinite set Ω, containing certain subgroups of the symmetric group Sym (Ω) on Ω. In 1965 ... -
The effect of slip length on vortex rebound from a rigid boundary
(2013-09-23) - Journal articleThe problem of a dipole incident normally on a rigid boundary, for moderate to large Reynolds numbers, has recently been treated numerically using a volume penalisation method by Nguyen van yen, Farge, and Schneider [Phys. ... -
On disjoint unions of finitely many copies of the free monogenic semigroup
(2013-08) - Journal articleEvery semigroup which is a finite disjoint union of copies of the free monogenic semigroup (natural numbers under addition) is finitely presented and residually finite. -
Green index in semigroups : generators, presentations and automatic structures
(2012) - Journal articleThe Green index of a subsemigroup T of a semigroup S is given by counting strong orbits in the complement S n T under the natural actions of T on S via right and left multiplication. This partitions the complement S nT ...