Abstract
Finding the smallest odd neighbourhood cover (odd N-cover) of an arbitrary graph is known to be NP-complete. We observe that there exist trees with an exponential number of odd N-covers, and present a polynomial-time algorithm to determine a minimum cardinality odd N-cover of a tree.
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© 1991 Springer-Verlag Berlin Heidelberg
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Dawes, R.W. (1991). Minimum odd neighbourhood covers for trees. In: Sherwani, N.A., de Doncker, E., Kapenga, J.A. (eds) Computing in the 90's. Great Lakes CS 1989. Lecture Notes in Computer Science, vol 507. Springer, New York, NY. https://doi.org/10.1007/BFb0038488
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DOI: https://doi.org/10.1007/BFb0038488
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