Abstract
The genus of a complete graph equals the least integer greater than or equal to (E-3V+6)/6, whereE andV are the numbers of edges and vertices of the graph. This paper extends the class of graphs known to have this property, concentrating on graphs whose number of vertices is congruent to 6 modulo 12.
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Alpert, S. R. andGross, J. L.,Components of branched coverings of current graphs J. Combinatorial Theory (to appear).
Duke, R. andHaggard, G.,The genus of subgraphs of K 8, Israel J. Math.11, (1972), 452–455.
Gross, J. L. andAlpert, S. R.,Branched coverings of graph imbeddings, Bull. Amer. Math. Soc.79, (1973), 942–945.
Gross, J. L. andAlpert, S. R.,The topological theory of current graphs, J. Combinatorial Theory (B)17, (1974), 218–233.
Ringel, G.,Bestimmung der Maximalzahl der Nachbargebiete auf nichtorientierbaren Flächen, Math. Ann.127, (1954), 181–214.
Ringel, G. andYoungs, J. W. T.,Solution of the Heawood map-coloring problem-case 11, J. Combinatorial Theory7, (1969), 71–93.
Youngs, J. W. T.,The Heawood map-coloring conjecture, inGraph Theory and Theoretical Physics, (F. Harary, ed.) Academic Press, London and New York, 1967, 313–354.
Youngs, J. W. T.,Solution of the Heawood map-coloring problem-cases 3, 5, 6, and 9, J. Combinatorial Theory8, (1970), 175–219.
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This research was initiated with partial support from NSF grant GJ-28403 at Columbia University and continued while the author was an IBM Postdoctoral Fellow in the Mathematical Sciences Department at the Thomas J. Watson Research Center, Yorktown Heights, N.Y. The author is also an Alfred P. Sloan Fellow.
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Gross, J.L. The genus of nearly complete graphs-case 6. Aeq. Math. 13, 243–249 (1975). https://doi.org/10.1007/BF01836527
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DOI: https://doi.org/10.1007/BF01836527