We describe a new Chebyshev spectral collocation method for systems of variablecoefficient linear delay differential equations with a single fixed delay. Computable uniform a posteriori bounds are ...

It is demonstrated that, in each of two problems which involve physical symmetry, the appropriate eigenvalue equation factorizes into two equations, one of which corresponds to solutions which are ...

May’s celebrated theoretical work of the 70’s contradicted the established paradigm by demonstrating that complexity leads to instability in biological systems. Here May’s random-matrix modelling ...