.

Also question is, what does negative infinity mean?

Infinity is just a concept of endlessness, and can be used to represent numbers going on forever. Negative infinity is the opposite of (positive) infinity, or just negative numbers going on forever.

One may also ask, does Infinity include negative numbers? Infinity is just a symbol, like 3, denoting an unaccountably large set, so asking if infinity has a beginning doesn't apply. No, in common use it does not generally include negatives. BUT you can have either a negative or a positive infinity, or an infinity that is both.

In this regard, what is positive and negative infinity?

Positive infinity is a symbol used to designate the limit of a sequence or function that eventually exceeds any prescribed bound. Negative infinity does the same thing for sequences that eventually fall below any prescribed bound. This sequence tends to positive infinity.

Is negative infinity equal to positive infinity?

This infinity, like zero, is neither positive nor negative; nor does it have any sort of direction to it, such as the way Complex numbers are neither positive nor negative but have an angle. Any finite number times this infinity is itself this infinity; so and .