# File:Disk to Sphere using Quotient Space.gif

Disk_to_Sphere_using_Quotient_Space.gif(200 × 150 pixels, file size: 485 KB, MIME type: image/gif, looped, 102 frames, 20 s)

Description
English: Illustration of Quotient space. The boundary (in blue) of a 2-disk when identified (glued together) to a single point, gives the topological 2-sphere. In general, ${\displaystyle S^{n}=D^{n}/\partial D^{n}}$. More precisely, ${\displaystyle S^{n}}$ is the adjunction space ${\displaystyle x\cup _{f}D^{n}}$, where ${\displaystyle x}$ is a single point, and with ${\displaystyle f:\partial D^{n}\rightarrow x}$ such that ${\displaystyle f(p)=x,\forall p\in \partial D^{n}}$.
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current21:55, 25 April 2011200 × 150 (485 KB)Subh83Uploaded a smaller file.
21:37, 25 April 2011600 × 450 (1.78 MB)Subh83{{Information |Description ={{en|1=Illustration of Quotient space. The boundary (in blue) of a 2-disk when identified to a single point gives the topological 2-sphere. In general, [itex]S^n =
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