### Neighbourhood tournaments

Bohdan Zelinka (1986)

Mathematica Slovaca

Similarity:

Skip to main content (access key 's'),
Skip to navigation (access key 'n'),
Accessibility information (access key '0')

Bohdan Zelinka (1986)

Mathematica Slovaca

Similarity:

Znám, Š. (1992)

Acta Mathematica Universitatis Comenianae. New Series

Similarity:

Oleg V. Borodin, Anna O. Ivanova, Tommy R. Jensen (2014)

Discussiones Mathematicae Graph Theory

Similarity:

It is known that there are normal plane maps M5 with minimum degree 5 such that the minimum degree-sum w(S5) of 5-stars at 5-vertices is arbitrarily large. In 1940, Lebesgue showed that if an M5 has no 4-stars of cyclic type (5, 6, 6, 5) centered at 5-vertices, then w(S5) ≤ 68. We improve this bound of 68 to 55 and give a construction of a (5, 6, 6, 5)-free M5 with w(S5) = 48

Bohdan Zelinka (1983)

Czechoslovak Mathematical Journal

Similarity:

Hopkins, Glenn, Staton, William (1989)

International Journal of Mathematics and Mathematical Sciences

Similarity:

Jiří Rosický (1970)

Archivum Mathematicum

Similarity: