A theorem on nonexistence of a certain type of nearly regular cell-decompositions of the sphere
Mirko Horňák (1978)
Časopis pro pěstování matematiky
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Mirko Horňák (1978)
Časopis pro pěstování matematiky
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Robert F. Williams (1979)
Publications Mathématiques de l'IHÉS
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Trout, Aaron (2010)
The Electronic Journal of Combinatorics [electronic only]
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Alsardary, S.Y. (1997)
Acta Mathematica Universitatis Comenianae. New Series
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Markov, Minko (2008)
Serdica Journal of Computing
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We investigate the NP-complete problem Vertex Separation (VS) on Maximal Outerplanar Graphs (mops). We formulate and prove a “main theorem for mops”, a necessary and sufficient condition for the vertex separation of a mop being k. The main theorem reduces the vertex separation of mops to a special kind of stretchability, one that we call affixability, of submops.
Bohdan Zelinka (1975)
Czechoslovak Mathematical Journal
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Bohdan Zelinka (1967)
Matematický časopis
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