We examine models in which the dark energy density increases with time (so that the equation-of-state parameter w satisfies w < -1), but w approaches -1 asymptotically, such that there is no future singularity. We refine previous calculations to determine the conditions necessary to produce th...
This constellation of two groups of actors does in fact constitute a major singularity of the Recycling 2016, 1, 286–310 306 PRC: whereas the informal WM sector in high-income countries in the West has gradually vanished over time [31], it has gradually grown in size in China [30]. ...