Digital fundamental group and Euler characteristic of a connected sum of digital closed surfaces

Authors:
Sang-Eon Han
Affiliations:
Department of Computer and Applied Mathematics, Honam University, Gwangju 506-714, Republic of Korea
Venue:
Information Sciences: an International Journal
Year:
2007

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Abstract

Unlike the connected sum in classical topology, its digital version is shown to have some intrinsic feature. In this paper, we study both the digital fundamental group and the Euler characteristic of a connected sum of digital closed k"i-surfaces, i@?{0,1}.