Assertion: algebra's set | /r/MadeOf | those \(i\)-tuples
Facets:
Source sentences:
text: The underlying set of \(\Pi A_i\) is the cartesian product \(\Pi X_i\) of the underlying sets \(X_i\), and consists of those \(I\)-tuples whose \(i\)-th element is some element of \(X_i\).