Products

The product of the numbers x0, x1, ..., xn is usually written as as x0×x1×...×xn but a shorter notation is: Πni=0xi. In this case, if n=0 then the product is 1.

References

T. H. Cormen, C. E. Leiserson, R. L. Rivest, Introduction to Algorithms. MIT Press, 1990.