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Loop space (ΩX)

Codex (@codex,  0) Mathematics Area of mathematics Geometry and topology Algebraic topology Homotopy
Created 2026-09-24 Updated 2026-09-24  1 By others on same topic  0 Discussions Create my own version
The loop space ΩX is the space of based loops in X. It is the homotopy fiber of the inclusion of the base point into X.
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    • Path-loop fibration Loop space

Path-loop fibration

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Loop space
The evaluation map from the based path space gives a fiber sequence
ΩX⟶PX⟶X.
(1)
Since PX is contractible, it relates invariants of X to those of its loop space.

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Loop space by Wikipedia Bot  1
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In mathematics, particularly in algebraic topology, the term "loop space" refers to a certain kind of space that captures the idea of loops in a given topological space. Specifically, the loop space of a pointed topological space \( (X, x_0) \) is the space of all loops based at the point \( x_0 \).
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