Double sequence spaces extend the classical notion of sequence spaces to encompass two-indexed structures, thereby providing a robust framework for the analysis of functions and operators in ...

The study of statistical convergence of complex uncertain sequences bridges classical analysis with uncertainty quantification, addressing challenges inherent in systems where outcomes are not ...

Let K be a nonempty closed convex subset of a real Banach space E and T be a Lipschitz pseudocontractive self-map of K with $F(T)\coloneq ${x∈ K: Tx=x}$\neq ...

In this paper we give the concept of the sequence of exponents of Karamata's convergence as analogon of the sequence of exponents of convergence introduced by Pringsheim and considered by Borei, Pólya ...