Discrete Mathematics John von Neumann ( - ) - - Discrete Mathematics Symbols - belongs to. ⋺ - such that. ∀ - for every. ⇒ - implies.
∃ - there exists In general, the word ‘operation’ refers to the process of operating upon either a single or more number of elements at a time. For instance, finding the negative of an element in involves a single element at a time. So it is called an unary operation . On the other hand the process of finding the sum of any two elements in involves two elements at a time .
This kind of operation is called a binary operation. In general an operation involving n elements is called an n-ary operation, n ∈ . In this section a detailed discussion of the binary operations is presented .