A 'sum' is a sequence of terms joined by addition.
A 'product' is a sequence of terms joined by multiplication.
Is there a general term for terms joined by a general associative operation, that mathematicians would know? Is it 'sequence'?
In Haskell this would be implemented as a fold, but what do you call the thing it acts on? 'Iterable' and 'Enumerable' are too computer-sciencey.
It's possible this question has no good answer.

@christianp wikipedia has a page called "iterated binary operation" which also includes taking the intersection or union over indexed sets, as well as sums and products

en.wikipedia.org/wiki/Iterated

@ccppurcell @christianp "... the preceding ibop has a value of ..."

@ccppurcell and the intro para says 'sequences of elements', so I think I'll go with 'sequences'.
A Mastodon instance for maths people. The kind of people who make $\pi z^2 \times a$ jokes.
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