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Ordinary 3-polytopes

โœ Scribed by T. Bisztriczky


Publisher
Springer
Year
1994
Tongue
English
Weight
607 KB
Volume
52
Category
Article
ISSN
0046-5755

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๐Ÿ“œ SIMILAR VOLUMES


Cyclic coloration of 3-polytopes
โœ Michael D. Plummer; Bjarne Toft ๐Ÿ“‚ Article ๐Ÿ“… 1987 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 418 KB

A cyclic coloration of a planar graph G is an assignment of colors to the points of G such that for any face bounding cycle the points of f have different colors. We observe that the upper bound 2p\*(G), due to 0. Ore and M. D. Plummer, can be improved to p \* ( G ) + 9 when G is 3connected (p\* den

Face sizes of 3-polytopes
โœ Edward A Bender; E.Rodney Canfield ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 288 KB
Hamiltonian paths on 3-polytopes
โœ P.R Goodey ๐Ÿ“‚ Article ๐Ÿ“… 1972 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 522 KB
Strengthening of a theorem about 3-polyt
โœ E. Jucoviฤ ๐Ÿ“‚ Article ๐Ÿ“… 1974 ๐Ÿ› Springer ๐ŸŒ English โš– 197 KB

A. Kotzig [5] proved the following theorem (cf. B. Griinbaum [2,3,4]: Every 3-polytope has at least one edge such that the sum of valencies of its end-vertices is ~< 13. In this note we deal with improvements of this statement. Let us review first some of the notations employed: If we are given a p