Answer:
In mathematics, "1-term products" and "empty products" are special cases of products.
A "1-term product" is a product that contains only one term. For example, the product of 5 and 1 is a 1-term product, since it only contains the term 5.
An "empty product" is a product that contains no terms at all. In other words, it is the product of a set of numbers, where the set is empty. The empty product is defined to be equal to 1, which is a multiplicative identity. For example, the empty product of the set { } (an empty set) is equal to 1.
These special cases of products are important in various areas of mathematics, including algebra and calculus, and are often used in the process of simplifying expressions and solving equations.