This is a supplement for "Pearls in graph theory" -- a textbook written by Nora Hartsfield and Gerhard Ringel.We discuss bounds on Ramsey numbers, the probabili

Stimulating and accessible, this undergraduate-level text covers basic graph theory, colorings of graphs, circuits and cycles, labeling graphs, drawings of grap

These notes were first used in an introductory course team taught by the authors at Appalachian State University to advanced undergraduates and beginning gradua

This is a textbook for an introductory combinatorics course lasting one or two semesters. An extensive list of problems, ranging from routine exercises to resea