Informally, a dynamic system is any physical system that evolves with time (e.g., a pendulum, a planet orbiting the sun, the weather, etc). From a more mathematically precise perspective, one can ...

We present a proof for certain cases of the noncommutative Borsuk-Ulam conjectures proposed by Baum, Dabrowski, and Hajac. When a unital C*-algebra A admits a free action of ℤ/kℤ, k ≥ 2, there is no ...

This is a preview. Log in through your library . Abstract This paper is concerned with the commutant of unbounded operators affiliated with finite von Neumann algebras. We prove an unbounded ...