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| Mathematical Spectrum | 3 |
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Peer reviewedBryant, V. W. – Mathematical Spectrum, 1972
Problems involving the use of diagrams to depict plangers'' (in which lines cross a specified number of times) are discussed. (LS)
Descriptors: Mathematical Applications, Mathematical Enrichment, Mathematical Models, Mathematics
Peer reviewedPatterson, E. M. – Mathematical Spectrum, 1971
The basic ideas of the theory of manifolds is illustrated using elementary geometry. (MM)
Descriptors: College Mathematics, Geometric Concepts, Mathematical Models, Mathematics
Peer reviewedVajda, S. – Mathematical Spectrum, 1969
Discussed are some applications of Euler's Formula N plus F minus E equals Z, where N, F, and E are respectively the number of vertices, faces, and edges of a planar figure. In particular, the Four-Color Problem is proved for the special case of five countries. (CT)
Descriptors: Geometric Concepts, Mathematical Concepts, Mathematical Enrichment, Mathematics
