Definition:Length
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Length may refer to:
- Length (Linear Measure): a formal comparison between the spatial extent of a geometric figure in a specified direction.
- Length (Analysis): the difference between the endpoints of a real interval.
- Length of a Sequence: the number of terms contained in a finite sequence.
- Length (Formal Systems): the number of symbols in a string.
- Length (Graph Theory): the number of edges in a walk (counting repeated edges as many times as they appear).
- Group Theory:
- Length of an Orbit: The number of elements contained in an orbit of a group action.
- Length of a normal series: The number of factors in a normal series.
- Length of a group $G$: the length of a composition series for $G$.
