The additive identity is a concept in mathematics that refers to a number which, when added to any other number, does not change the value of that number. In the set of real numbers (as well as in many other mathematical systems), the additive identity is the number \(0\).
Articles by others on the same topic
An identity element for addition: . In a vector space, it is the zero vector; among matrices of fixed dimensions, it is the zero matrix.