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- Helsinki Institute of PhysicsFI6 papers
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math.CO2006★ 17 cited
Circular chromatic index of graphs of maximum degree 3
Peyman Afshani, Mahsa Ghandehari, Mahya Ghandehari +3
This paper proves that if is a graph (parallel edges allowed) of maximum degree 3, then provided that does not contain or as a subgraph, whe…
math.CO2006
Problems related to a de Bruijn - Erdős theorem
Xiaomin Chen, Vašek Chvátal
De Bruijn and Erdős proved that every noncollinear set of n points in the plane determines at least n distinct lines. We suggest a possible generalization of this theorem in the fr…