In addition to your question for a name you also been offered a generalization of the form to process not only two but n elements of the list at a time. But this is only one possible way to generalize. You could also think of it as applying an operation to each element of a list and a shifted version of the list, like this:
1 2 3 4 5 6 7 8
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1 2 3 4 5 6 7 8
In this case the offset between the list and its shifted version would be an extra parameter and - as in autocorrelation - the name would be automap
.
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