In this note the (γ,3)-critical graphs are fairly classified. We show that a (γ, k)-critical graph is not necessarily a (γ, k')-critical for k' ≠ k and k, k' ∊ {1,2,3}. The (2, 3)-critical graphs are ...

If your organization is like many, you may be taking a “store everything” approach to data. After all, storage has become more affordable than ever in recent years, and due to the accessibility of ...

For most of us, the word graph brings back memories (not always pleasant) of pencils and rulers and quadrille ruled paper, though a more recent generation may think instead of pie and bar charts ...