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Concept

Multiplicative Identity

The multiplicative identity, also known as the identity element, is multiplied against every element of a group, and those elements remain unchanged. For example, when considering real numbers, the identity element is

1 .

7 \cdot 1 \frac{3}{4} \cdot 1 = 7 = \frac{3}{4} 2.36 \cdot 1 π \cdot 1 = 2.36 = π

The exception to this identity is

0

since

0 \cdot 1 = 0 .

Therefore, it is excluded when dealing with the identity of real numbers.

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