Some Properties of Posynomial Rings
  In this article we shall study some basic properties of posynomial rings with particular emphasis on rings ${\rm Pos}(K,\mathbb{Q})[\bar x]$, and ${\rm Pos}(K,\mathbb{Z})[\bar x]$. The latter ring is the well known ring of Laurent polynomials. 
Zarko Mijajlovic, Milos Milosevic, Aleksandar Perovic