- product(List) -- product of elements
- product(Set) -- product of elements
- product(VirtualTally) -- product of elements
- product(VisibleList,Function) -- product of values of a function
- product(VisibleList,VisibleList,Function) -- product of results of applying a function pairwise
- product(ZZ,Function) -- product of consecutive values of a function

The object product is a method function.