Here we study the spectral theory of compact operators which leave a convex set invariant in a Banach space. We also obtain a theorem in positive operators by an application of the general minimax ...

Linear operators form the cornerstone of analysis in Banach spaces, offering a framework in which one can rigorously study continuity, spectral properties and stability. Banach space theory, with ...

Given a conjugation C on a separable complex Hilbert space H, a bounded linear operator T on H is said to be C-skew symmetric if CTC = −T*. This paper describes the maps, on the algebra of all bounded ...

Linear operators form the backbone of modern mathematical analysis and have become indispensable in characterising the behaviour of dynamical systems. At their core, these operators are functions ...