“Signum” is a Latin word meaning “sign” or “mark”. It has various applications across different fields, including mathematics, technology, and even fictional characters.
Here’s a breakdown of what “signum” can refer to:

In Mathematics:
Sign function (or signum function): This function returns -1, 0, or 1 depending on whether a number is negative, zero, or positive, respectively. It’s used to determine the sign of a numerical value.