Topic: Graphs, Degrees and the Handshake Lemma

Worked Havel-Hakimi Realizations

Vertex-Edge Models of Graphs

Vertex Degrees in Simple Graphs

The Havel-Hakimi Reduction

The Handshake Lemma by Counting Incidences

The Erdos-Gallai Criterion

Simple Graphs and Their Notation

Proof of the Havel-Hakimi Theorem

Parity Consequences of the Handshake Lemma

Multigraphs, Parallel Edges, and Loops