Editing Product (mathematics) (section)

==Product of a sequence{{anchor|Product of sequences}}==
{{See also|Multiplication#Product of a sequence}}
The product operator for the [[Multiplication#Capital pi notation|product of a sequence]] is denoted by the capital Greek letter [[Pi (letter)|pi]] <span style="font-family: times, serif; font-size:150%">Π</span> (in analogy to the use of the capital Sigma <span style="font-family: times, serif; font-size:150%">Σ</span> as [[summation]] symbol).<ref name=":0">{{Cite web|last=Weisstein|first=Eric W.|title=Product|url=https://mathworld.wolfram.com/Product.html|access-date=2020-08-16|website=mathworld.wolfram.com|language=en}}</ref> For example, the expression <math>\textstyle \prod_{i=1}^{6}i^2</math> is another way of writing {{tmath|1 \cdot 4 \cdot 9 \cdot 16 \cdot 25 \cdot 36}}.<ref>{{Cite web|title=Summation and Product Notation|url=https://math.illinoisstate.edu/day/courses/old/305/contentsummationnotation.html|access-date=2020-08-16|website=math.illinoisstate.edu}}</ref>

The product of a sequence consisting of only one number is just that number itself; the product of no factors at all is known as the [[empty product]], and is equal to 1.