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Boundary component
In topology a boundary component of a compact surface is a connected component consisting of boundary points of a surface. A point in any surface is either a boundary point, if it has a neighborhood homeomorphic to a half-disk, or an interior point, if it has a neighborhood homeomorphic to a disk.
For instance, a compact cylinder is a surface with two boundary components.
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details


