3 papers
math.RA2026
On DR-semigroups satisfying the ample conditions
Tim Stokes
A DR-semigroup (also known as a reduced E-semiabundant or reduced E-Fountain semigroup) is here viewed as a semigroup equipped with two unary operations satisfying finite…
math.CT2025
D-inverse constellations
Victoria Gould, Tim Stokes
We give an algebraic characterisation of ordered groupoids, namely, we show that there is a categorical isomophism between the category of ordered groupoids and the category of …
cs.CE2025
Fast Higher-Order Interpolation and Restriction in ExaHyPE Avoiding Non-physical Reflections
Timothy Stokes, Tobias Weinzierl, Han Zhang +1
Wave equations help us to understand phenomena ranging from earthquakes to tsunamis. These phenomena materialise over very large scales. It would be computationally infeasible to t…