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Showing 2011 · math.COShow all
3 papers · 2 filters
math.CO2011
Degrees in oriented hypergraphs and Ramsey p-chromatic number
Yair Caro, Adriana Hansberg
The family of graphs having an orientation such that for every vertex either (outdegree) or (indegree) have been investigated re…
math.CO2011★ 3 cited
Interval Graphs with Containment Restrictions
Jeffrey Beyerl, Robert E. Jamison
An interval graph is proper iff it has a representation in which no interval contains another. Fred Roberts characterized the proper interval graphs as those containing no induced…
math.CO2011
Small asymmetric sumsets in elementary abelian 2-groups
Chaim Even-Zohar, Vsevolod F. Lev
Let A and B be subsets of an elementary abelian 2-group G, none of which are contained in a coset of a proper subgroup. Extending onto potentially distinct summands a result of Hen…