Szukana fraza: [Abstract = By using these tools, we can calculate digital fundamental groups of some digital spaces and classify digital covering spaces satisfying a radius 2 local isomorphism \(Boxer and Karaca, 2008\; Han, 2006b\; 2008b\; 2008d\; 2009b\). However, for a digital covering which does not satisfy a radius 2 local isomorphism, the study of a digital fundamental group of a digital space and its automorphism group remains open]

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