6533b7d5fe1ef96bd126471a

RESEARCH PRODUCT

The minimum size of fully irregular oriented graphs

Zdzisław SkupieńJoanna GórskaZofia MajcherJerzy Michael

subject

Discrete mathematicsCombinatoricsMathematics::CombinatoricsComputer Science::Discrete MathematicsDiscrete Mathematics and CombinatoricsMinimum sizeOriented graphIrregular digraphMathematicsTheoretical Computer Science

description

Abstract Digraphs in which any two vertices have different pairs of semi-degrees are called fully irregular. For n-vertex fully irregular oriented graphs (i.e. digraphs without loops or 2-dicycles) the minimum size is presented.

10.1016/s0012-365x(00)00446-5http://dx.doi.org/10.1016/S0012-365X(00)00446-5