Algebraic structures and linear maps form a cornerstone in modern mathematics, underpinning areas as diverse as abstract algebra and functional analysis. Algebraic structures such as groups, rings ...

There exists a noninjective commutative C*-algebra A such that every bounded linear map of any C*-algebra into A is decomposed as a linear combination of positive linear maps. This monthly journal, ...

We introduce the notion of (completely) multi-positive linear maps between C*-algebras, and show that a completely multi-positive linear map induces a representation of a C*-algebra on Hilbert ...