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 ...

My purpose in this paper is to present a didactic tool - a set of specially designed problems and questions for discussion - that can help making students better aware of the various aspects of the ...

Let X, Y be two sequence spaces defined by speeds of the convergence, i.e.; by monotonically increasing positive sequences. In this paper, we give necessary and sufficient conditions for a matrix A ...

Having a reliable species tree is prerequisite for understanding evolution, which is necessary for making sense of virtually every biological phenomenon. Traditionally, species trees are inferred ...

A collaboration between SISSA's Physics and Neuroscience groups has taken a step forward in understanding how memories are ...

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