We introduce a time-delay function in bulk viscosity cosmology. Even for functions where closed-form solutions are known, because of the term exact lost. Therefore order to study cosmological evolution resulting models we perform detail analysis stability critical points, which describe de Sitter solutions, by using Lindstedt's method. find that points it depends also on parameter, value is fou...

The space-based gravitational-wave observatory LISA relies on a form of synthetic interferometry (time-delay interferometry, or TDI) where the otherwise overwhelming laser phase noise is canceled by linear combinations appropriately delayed measurements. These observables grow in length and complexity as realistic features orbits are taken into account. In this paper we outline an implicit form...