2 papers
math.OA2025
Nondegenerate actions on Hilbert C*-modules
Elias Katsoulis, Christopher Ramsey
Let X be a (right) Hilbert C*-module and let B be a C*-algebra acting on X from the left via adjointable operators. In this note we establish the equivalence of two notions of nond…
math.OA2025
The Lattice of C*-covers of an operator algebra
Adam Humeniuk, Christopher Ramsey
In this paper it is shown that the lattice of C*-covers of an operator algebra does not contain enough information to distinguish operator algebras up to completely isometric isomo…