Abstract
So far, in order to understand topological spaces, we have been using numerical invariants such as the Euler characteristic in order to detect whether spaces are homeomorphic or not. However, there is a wide class of other invariants, which associate other sorts of objects to spaces. For the next few chapters, we will build up to the fundamental group, and then we will work on understanding its behavior.
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Bray, C., Butscher, A., Rubinstein-Salzedo, S. (2021). Introduction to Group Theory. In: Algebraic Topology. Springer, Cham. https://doi.org/10.1007/978-3-030-70608-1_5
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DOI: https://doi.org/10.1007/978-3-030-70608-1_5
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Online ISBN: 978-3-030-70608-1
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