the «best» scale for human voters should have 10 levels and consist entirely of nonnegative numbers ordered increasing from left to right, and equispaced, with the two endpoints only of the scale «anchored» with descriptive words (politics.stackexchange.com)
In his doctoral dissertation, Dmytro Baidiuk has been able to improve a couple of classical theorems known in the area, namely Shmul «yan theorem on completion of nonnegative block operators and Krein famous theorem on description of selfadjoint contractive extensions of a Hermitian contraction. (sciencedaily.com)
(R denotes the set of nonnegative real numbers).5 In this model we recognize a persistent identity as a connected set of images in the codomain. (religion-online.org)