As we know that the double sequence $x_{mn}$ represents an infinite matrix, in the similar way how we represent a triple sequence $x_{lmn} $ ?

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Ugur Kadak

Dear Baliarsingh,

This question is very interesting. In my opinion we may use a three dimensional matrix for representation of triple sequences. You find an example below.

https://www.soest.hawaii.edu/martel/Courses/GG250/gg250_lab_10_ppt.pdf

Best wishes

P. Baliarsingh

Thank you it is an infinite three-dimensional matrix, as we operate a difference operator to this, then what about the presentation of that operator?