The Universal Cover
Part of the Graduate Texts in Mathematics book series (GTM, volume 225)
If U is a Hausdorff topological space, a path is a continuous map p : [0,1]→ U. The path is closed if the endpoints coincide : p(0) = p(1). A closed path is also called a loop.
- 149.E. Spanier. Algebraic Topology. McGraw-Hill Book Co., New York, 1966.Google Scholar
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