Linear Operator Theory in Banach Algebras studies bounded linear mappings within complete normed algebras and their extensions across both algebraic and analytic frameworks. Banach algebras provide a ...

Approximation theory of linear operators investigates the systematic approximation of functions by sequences of linear mappings acting on function spaces. Central to the field are families of positive ...

Linear analysis plays a central role in science and engineering. Even when dealing with nonlinear systems, understanding the linear response is often crucial for gaining insight into the underlying ...