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Peer reviewedBeineke, Lowell W. – College Mathematics Journal, 1989
Explored are various aspects of drawing graphs on surfaces. The Euler's formula, Kuratowski's theorem and the drawing of graphs in the plane with as few crossings as possible are discussed. Some applications including embedding of graphs and coloring of maps are included. (YP)
Descriptors: College Mathematics, Critical Path Method, Graphs, Higher Education
Peer reviewedBeresin, May; And Others – College Mathematics Journal, 1989
Determines which chessboards contain a chromatic rectangle having all four corners the same color for any black-white coloring. Expands the problem to a three color problem. (YP)
Descriptors: Algebra, College Mathematics, Mathematical Applications, Mathematical Enrichment
