Cone space: Difference between revisions

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{{self-functor on topospaces}}
==Definition==
==Definition==


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<math>(x_1,0) \sim (x_2,0) \forall x_1,x_2 \in X</math>
<math>(x_1,0) \sim (x_2,0) \forall x_1,x_2 \in X</math>


==Relation with other functors==
Refer:
 
===Related functors===
 
* [[Suspension]]
 
==Properties of cone spaces==


{{contractible}}
* [[Cone space functor]] to see the properties of the cone space functor
* [[Cone-realizable space]] to see the property of a topological space being realizable as the cone space over some space

Revision as of 23:23, 2 November 2007

Definition

Given a topological space X, the cone space of X, denoted as CX, is defined as the quotient of X×I by the equivalence relation:

(x1,0)(x2,0)x1,x2X

Refer: