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Canonical static concept record

Loop space ΩX\Omega X

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Summary

The space of based loops in a pointed space, with concatenation associative up to coherent homotopy.

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Carrier(s)

Data

Canonically induces

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Incoming relations (arrows to this concept)

Each relation below ends at this concept.

Pointed topological spaceLoop space ΩX\Omega X

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

The loop space consists of maps from the pointed circle preserving the basepoint.

How to interpret this relation type

Apply a standard functorial or canonical construction whose output is not merely a reduct of the input and is not generally an equivalent presentation of the same object.

Relation sources

Outgoing relations (arrows from this concept)

Each relation below starts at this concept.

Loop space ΩX\Omega XFundamental group π1(X,x0)\pi_1(X,x_0)

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Take based loops as representatives and identify two loops exactly when they are homotopic through based loops. The quotient set of based-homotopy classes is π1\pi_1, with multiplication induced by concatenation.

How to interpret this relation type

Identify elements by a stated equivalence relation and equip the quotient with the induced structure. The edge detail must state the representatives and equivalence relation.

Relation sources

Loop space ΩX\Omega XHigher homotopy group πn(X,x0)\pi_n(X,x_0)

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Higher homotopy groups are obtained from based maps of spheres, equivalently iterated loop spaces.

How to interpret this relation type

Apply a standard functorial or canonical construction whose output is not merely a reduct of the input and is not generally an equivalent presentation of the same object.

Relation sources