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Infinity
Infinity or  is a symbol that represents a positive infinite quantity.
can be entered as \[Infinity] or  inf.
In StandardForm, Infinity is printed as .
Infinity is converted to DirectedInfinity[1].
Certain arithmetic operations work with Infinity.
Example: 1/Infinity .
NumberQ[Infinity] yields False.
See the Mathematica book: Section 1.1.3, Section 2.1.7, Section 3.1.8, Section 3.2.8.
See also: ComplexInfinity, Indeterminate.
Further Examples
You can do some arithmetic with Infinity.
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Infinity can be used used in limits, products, sums, and integrals.
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