The graphs that mathematicians study can get very large and complicated, so it helps to have some simple features to look at. One such feature is the sum of all the degrees of a graph. Right away, ...

The standard example is the so-called Ladder Graph. A balanced embedding of this graph looks exactly like a ladder. But Holm says: “In an unbalanced embedding, it is hardly recognizable.” ...

The search for those higher-dimensional structures is where the math turns especially murky — and interesting. The higher-order analogue of a graph, for example, is called a hypergraph, and instead of ...

Books Received Published: 24 August 1905 Easy Graphs The Rudiments of Practical Mathematics Elementary Practical Mathematics A First Algebra Algebraical Grounding Examples in Algebra Geometrical ...