The special values such as NaN and positive or negative infinity can be tested and set.

Positive, the members (terms) will grow towards positive infinity.

Greater than 1, there will be exponential growth towards positive or negative infinity (depending on the sign of the initial term).

Less than 1, for the absolute values there is exponential growth towards positive and negative infinity (due to the alternating sign).

In the case of perfect substitutes, the cross elasticity of demand is equal to positive infinity.

Indeed, it has extremely simple behaviour: all points except 0 will tend to positive or negative infinity.

Antinumbers are envisioned to be numbers beyond positive and negative infinity.

Some authors prefer to replace addition with minimization; then the additive identity is positive infinity.

Division of any non-zero finite number by zero results in either positive or negative infinity.

Upon a divide by zero exception, a positive or negative infinity is returned as an exact result.