In this chapter we give a descriptive account of surfaces, of which we have already met the plane, the sphere and the torus. There are many other surfaces, shortly to be described. The essential idea is that near each of its points a surface is just like the plane.
KeywordsTopological Space Good Surface Open Disc Opposite Point Klein Bottle
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This innocent-looking operation is very useful: it is an example of something called the attaching map and is a good way of building up more complicated spaces from simpler ones.Google Scholar
Important examples not discussed here are the orbit spaces: see .Google Scholar
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