Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2021/iii/paper-220/1/c/solution

The assertion is false. Join, at one common endpoint , a line segment of length for every positive integer , and use the intrinsic path metric. This is a real tree. It is totally bounded, because outside the first finitely many arms every point lies arbitrarily close to , and it is complete; hence it is compact. Removing leaves one connected component for every arm, so has countably infinite multiplicity of a point in a real tree.

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