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Real Analysis Metric Spaces

Let w, x, y, z be four points in a metric space. Establish the quadrilateral inequality (see attached).

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Proof:
w,x,y,z are four points in a metric space. Then we have
d(w,x)<=d(w,y)+d(x,y), ...

Solution Summary

This solution is comprised of a detailed explanation to establish the quadrilateral inequality.

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