Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Infinity is a concept that represents an unbounded or limitless quantity. It is not a number, but rather a mathematical idea used to describe values that have no upper or lower bound.
An infinite series is the sum of an infinite sequence of numbers. It may converge (approach a finite value) or diverge (not approach any specific value).
In calculus, an inflection point is where the concavity of a curve changes. It can occur at points where functions approach infinity or negative infinity.