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ERIC Number: EJ035473
Record Type: CIJE
Publication Date: 1969
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
Plane and Coloured
Vajda, S.
Mathematical Spectrum, 2, 2, 51-53, 69/70
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)
Publication Type: N/A
Education Level: N/A
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Language: N/A
Sponsor: N/A
Authoring Institution: N/A