Homonym: −1 (Negative)
The number "−1" is an integer that represents a value one unit less than zero. It is part of the set of negative numbers, which are used to indicate values below zero. In mathematics, negative numbers are essential for various operations, including subtraction and solving equations.
In the context of real numbers, "−1" plays a significant role in algebra and calculus. It is often used in calculations involving negative values and can also represent a direction opposite to positive numbers on a number line. Additionally, "−1" is the multiplicative inverse of "1," meaning that multiplying "−1" by "1" results in "−1."