The quotient structure defined by a specific equivalence relation allows to simplify the study of complex communications between processes in computer networks. The quotient also preserves the initial algebraic structure. This paper describes an algebraic structure modelling the communication in computer networks; it continues the study initiated in [1]. Given two communicating processes, we co...

The purpose of this note is to introduce a new method for proving the existence of Sasakian-Einstein metrics on certain simply connected odd dimensional manifolds. We then apply this method to prove the existence of new Sasakian-Einstein metrics on S×S and on (S×S)#(S×S). These give the first known examples of non-regular Sasakian-Einstein 5manifolds. Our method involves describing the Sasakian...