What is infinity minus infinity?

Infinity minus infinity is considered to be an indeterminate form in mathematics because it could represent a wide range of values, depending on how the two infinities are defined and related to each other.

In some cases, when both infinities are of the same value (such as infinity minus infinity), the result could be zero or undefined. This is because infinity is not a number and does not follow the same rules of arithmetic as finite numbers.

It is important to note that operations involving infinity can be complex and may not always be well-defined. In mathematical analysis, techniques such as limits, calculus, and set theory are used to study and understand the properties of infinity in various contexts.