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An Entity of Type : prov:Entity, within Data Space : webisadb.webdatacommons.org associated with source dataset(s)

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  • The kernel of this representation is the image of the fundamental group pf the torus minus 4 points. (Usually there is an ambiguity coming from the choice of base point in the covering space, but not in this example, since the covering is regular.) The kernel is formed by all words containing an even number of letters.
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