Makeup and SFX artist Jo Steel cosplays a Ringwraith from Lord of the Rings with makeup. Donald Trump threatens to terminate broadcast licenses of major networks Officer 'horribly unjustified' in ...

Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

Functor theory - Explores the concept of exact categories and the theory of derived functors, building upon earlier work by Buchsbaum. Freyd investigates how properties and statements applicable to ...