Loop (topology)
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Short description: Topological path whose initial point is equal to its terminal point
In mathematics, a loop in a topological space X is a continuous function f from the unit interval I = [0,1] to X such that f(0) = f(1). In other words, it is a path whose initial point is equal to its terminal point.[1]
A loop may also be seen as a continuous map f from the pointed unit circle S1 into X, because S1 may be regarded as a quotient of I under the identification of 0 with 1.
The set of all loops in X forms a space called the loop space of X.[1]
See also
References
- ↑ 1.0 1.1 Adams, John Frank (1978), Infinite Loop Spaces, Annals of mathematics studies, 90, Princeton University Press, p. 3, ISBN 9780691082066, https://books.google.com/books?id=e2rYkg9lGnsC&pg=PA3.
es:Grupo fundamental#Lazo
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